CN108806659A - Noise-reduction method and device, the electronic equipment of air purifier - Google Patents

Abstract

The present disclosure relates to a noise reduction method and device for an air purifier, and electronic equipment. The method may include: when the air purifier is in a working state, acquiring the anti-phase sound wave corresponding to the real-time noise generated by the air purifier; playing The acquired sound wave is inverted to perform noise reduction processing on the real-time noise. Through the technical solution of the present disclosure, at least part of the real-time noise can be eliminated, which helps to reduce the real-time noise generated by the air purifier when it is in a working state. At the same time, by playing the anti-phase sound wave in the direction where the user is located, the impact on the user can be reduced and the user experience can be improved.

Description

Air purifier noise reduction method and device, electronic equipment

technical field

The present disclosure relates to the technical field of smart home, in particular to a noise reduction method and device for an air purifier, and electronic equipment.

Background technique

Today air purifiers are widely used to improve air quality and provide clean and safe air to users. However, the noise generated by the air purifier during work has seriously affected the daily work and life of users.

In the related art, the air purifier provides different working modes, such as sleep mode, automatic mode, power saving mode, high speed mode and so on. Among them, the noise generated by the air purifier in different working modes is also different. For example, when the user needs to take a rest (the noise is expected to be low at this time), the air purifier can be put into a sleep mode, and the noise generated by the air purifier in this working mode is minimal.

However, the power of the air purifier in different working modes is also different. The greater the power, the stronger the air purification ability and the greater the noise generated. By modifying the working mode of the air purifier to reduce its way of generating noise, the ability of the air purifier to purify the air is reduced, resulting in a weakened effect of purifying the air.

Contents of the invention

The disclosure provides a method and device for reducing noise of an air purifier, and electronic equipment, so as to solve the deficiencies in related technologies.

According to a first aspect of an embodiment of the present disclosure, there is provided a noise reduction method for an air purifier, including:

When the air purifier is in working condition, acquire the anti-phase sound wave corresponding to the real-time noise generated by the air purifier;

Play the acquired reverse-phase sound wave to perform noise reduction processing on the real-time noise.

Optionally, the acquisition of the anti-phase sound wave corresponding to the real-time noise generated by the air purifier includes:

Read the pre-stored preset anti-phase sound wave, and use the read preset anti-phase sound wave as the anti-phase sound wave; wherein, the preset anti-phase sound wave is generated by the air purifier in the working state The sampled real-time noise is obtained by inversion processing.

Optionally, the acquisition of the anti-phase sound wave corresponding to the real-time noise generated by the air purifier includes:

collecting the real-time noise generated by the air purifier in working condition;

Inverting the real-time noise to obtain a corresponding real-time anti-phase sound wave, and using the real-time anti-phase sound wave as the anti-phase sound wave.

Optionally, the playing the obtained inversion sound wave to perform noise reduction processing on the real-time noise includes:

The direction in which the user is located is determined, and the reverse-phase sound wave is played in the determined direction to perform noise reduction processing on the real-time noise.

Optionally, the amplitude of the anti-phase sound wave is slightly smaller than the amplitude of the real-time noise.

Optionally, also include:

When the intensity of the noise-reduced sound wave obtained after the noise reduction process is greater than or equal to the preset playback threshold, the amplitude of the anti-phase sound wave is reduced or increased by the preset amplitude adjustment value, so that the intensity of the noise-reduced sound wave Less than the preset playback threshold.

According to a second aspect of an embodiment of the present disclosure, there is provided a noise reduction device for an air purifier, comprising:

An acquisition unit, when the air cleaner is in working condition, acquires the anti-phase sound wave corresponding to the real-time noise generated by the air cleaner;

A playing unit, playing the acquired reverse-phase sound wave to perform noise reduction processing on the real-time noise.

Optionally, the acquisition unit includes:

The reading subunit reads the pre-stored preset anti-phase sound waves, and uses the read preset anti-phase sound waves as the anti-phase sound waves; wherein, the preset anti-phase sound waves are controlled by the air purifier The sampling real-time noise generated in the working state is obtained by inversion processing.

Optionally, the acquisition unit includes:

The collection subunit collects the real-time noise generated by the air purifier in working condition;

The phase inversion processing subunit performs phase inversion processing on the real-time noise to obtain a corresponding real-time anti-phase sound wave, and uses the real-time anti-phase sound wave as the anti-phase sound wave.

Optionally, the playback unit includes:

The subunit is determined, the direction of the user is determined, and the reverse-phase sound wave is played in the determined direction to perform noise reduction processing on the real-time noise.

Optionally, the amplitude of the anti-phase sound wave is slightly smaller than the amplitude of the real-time noise.

Optionally, also include:

The adjustment unit, when the intensity of the noise-reduced sound wave obtained after the noise reduction processing is greater than or equal to the preset playback threshold, reduces or increases the amplitude of the anti-phase sound wave through the preset amplitude adjustment value, so that the noise-reduced The intensity of the sound wave is less than the preset playback threshold.

According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, including:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured as:

When the air purifier is in working condition, acquire the anti-phase sound wave corresponding to the real-time noise generated by the air purifier;

Play the acquired reverse-phase sound wave to perform noise reduction processing on the real-time noise.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the steps of the method described in any one of the above-mentioned embodiments are implemented.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

It can be seen from the above embodiments that the present disclosure obtains and plays the anti-phase sound wave corresponding to the real-time noise generated by the air purifier, so that the anti-phase sound wave and the real-time noise can be neutralized and canceled each other, thereby at least part of the real-time noise can be eliminated, effectively Helps reduce the real-time noise generated by the air purifier when it is in operation. At the same time, by playing the anti-phase sound wave in the direction where the user is located, the impact on the user can be reduced and the user experience can be improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flowchart of a noise reduction method for an air purifier according to an exemplary embodiment.

Fig. 2 is a flowchart of another noise reduction method for an air purifier according to an exemplary embodiment.

Fig. 3 is a schematic diagram showing the principle of a noise reduction method for an air purifier according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram of an air purifier according to an exemplary embodiment.

5-7 are schematic structural diagrams of ANC functional components according to an exemplary embodiment.

Fig. 8 is a schematic diagram showing an air purifier performing noise reduction processing according to an exemplary embodiment.

Fig. 9 is a schematic diagram showing noise reduction processing performed by a single noise reduction device according to an exemplary embodiment.

Fig. 10 is a block diagram of a noise reduction device for an air purifier according to an exemplary embodiment.

Fig. 11 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment.

Fig. 12 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment.

Fig. 13 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment.

Fig. 14 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment.

Fig. 15 is a schematic structural diagram of a noise reduction device for an air purifier according to an exemplary embodiment.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

Fig. 1 is a flowchart of a noise reduction method for an air purifier according to an exemplary embodiment. As shown in Fig. 1, the method is applied to an air purifier and may include the following steps:

In step 102, when the air purifier is in a working state, the anti-phase sound wave corresponding to the real-time noise generated by the air purifier is acquired.

In this embodiment, in one case, since the real-time noise of the air purifier mainly comes from the rotation of the fan, and because the rotation speed of the fan is fixed in a specific working mode, the air purifier is All modes produce specific vibration and sound patterns. Based on the above factors, it is possible to adopt a method of pre-storing the anti-phase sound wave, such as: read the pre-stored preset anti-phase sound wave, and use the read preset anti-phase sound wave as the anti-phase sound wave; wherein, the preset The anti-phase sound wave is obtained by inverting the sampled real-time noise generated by the air purifier in the working state. Based on the above method of pre-stored anti-phase sound waves, as long as the pre-stored anti-phase sound waves (that is, preset anti-phase sound waves) are directly read and played, the neutralization and offset of the real-time noise generated by the air purifier can be realized, especially It has a better offsetting effect on the real-time noise in the middle and low frequency bands generated by the air purifier.

In another case, because the environment in which the air purifier is located may be different (for example, the size of the room is different, the noise of the surrounding environment is different, etc.), resulting in differences in the real-time noise generated by the air purifier, so real-time generation of anti-phase sound waves can be adopted The way to obtain the anti-phase sound wave, the process is as follows: collect the real-time noise generated by the air purifier in the working state; carry out inversion processing on the real-time noise to obtain the corresponding real-time anti-phase sound wave, and convert the real-time An anti-phase sound wave is used as the anti-phase sound wave. By collecting real-time noise, the final anti-phase sound wave (obtained by inverting the real-time noise) is also real-time, so that it can not only better offset the real-time noise, especially for the high-frequency noise caused by the scene. A better cancellation effect can also reduce the sound waves in the anti-phase sound waves that cannot cancel each other with the real-time noise, thereby reducing the impact caused by the additional noise caused by the anti-phase sound waves.

In yet another case, the counteracting effect of the preset anti-phase sound waves on the real-time noise in the middle and low frequency bands generated by the air purifier, and the counteracting effect of the real-time anti-phase sound waves on the high-band real-time noise caused by environmental differences can be combined, thereby It can more effectively reduce the real-time noise generated by the air purifier in the working state, so as to avoid affecting the work, rest, and study of the user.

In this embodiment, the amplitude of the anti-phase sound wave may be slightly smaller than the amplitude of the real-time noise. By setting the amplitude of the anti-phase sound wave to be slightly smaller than the amplitude of the real-time noise, it can effectively prevent the acquired anti-phase sound wave from becoming a new noise source and generating additional noise. At the same time, by reducing the amplitude of the anti-phase sound wave, the power consumption caused by playing the anti-phase sound wave can also be reduced.

In step 104, the acquired reverse-phase sound wave is played to perform noise reduction processing on the real-time noise.

In this embodiment, the noise reduction processing in a specific direction can be realized in the following manner: determine the direction the user is in, and play the reverse-phase sound wave in the determined direction to perform noise reduction processing on the real-time noise . By only playing the anti-phase sound waves in the direction where the user is (without playing the anti-phase sound waves in each direction separately), the power consumption caused by playing the anti-phase sound waves can be effectively reduced. At the same time, the noise reduction effect on the user's prescription can be optimized, so as to minimize the impact on the user's work, rest, and study.

In this embodiment, the noise-reduced sound waves obtained after the noise reduction processing can be further adjusted to achieve a better noise reduction effect, and the adjustment process is as follows: When the noise-reduction sound waves obtained after the noise reduction processing When the intensity is greater than or equal to the preset playback threshold, the amplitude of the anti-phase sound wave is reduced or increased by the preset amplitude adjustment value, so that the intensity of the noise-reduced sound wave is smaller than the preset playback threshold.

In addition, the technical solution of the present disclosure can also be applied to a separate noise reduction device independent of the air purifier, and the specific process is similar to the above-mentioned application to the air purifier, and will not be repeated here.

It can be seen from the above embodiments that the present disclosure obtains and plays the anti-phase sound wave corresponding to the real-time noise generated by the air purifier, so that the anti-phase sound wave and the real-time noise can be neutralized and canceled each other, thereby at least part of the real-time noise can be eliminated, effectively Helps reduce the real-time noise generated by the air purifier when it is in operation. At the same time, by playing the anti-phase sound wave in the direction where the user is located, the impact on the user can be reduced and the user experience can be improved.

For ease of understanding, the technical solution of the present disclosure will be further described below in conjunction with the scene and accompanying drawings:

Please refer to FIG. 2. FIG. 2 is a flowchart of another noise reduction method for an air purifier according to an exemplary embodiment. As shown in FIG. 2, the method is applied to an air purifier and may include the following steps:

In step 202, the anti-phase sound wave corresponding to the real-time noise generated when the air purifier is in working state is acquired.

In this embodiment, the technical solution of the present disclosure can be used as a special noise reduction mode or noise reduction function, and when the user turns on the noise reduction mode or noise reduction function on the air purifier, the technology based on the present disclosure can be realized. Scheme of the noise reduction method of the air purifier.

In this embodiment, as shown in Figure 3, by acquiring and playing the anti-phase sound wave corresponding to the real-time noise, the anti-phase sound wave can be superimposed with the real-time noise to achieve the effect of canceling each other out (as shown in the figure after noise reduction Sound waves), so that at least part of the real-time noise generated by the air purifier can be offset, especially when the user is in noise-sensitive scenes such as work, rest, and study, it can avoid adverse effects on the user and help improve the user's application experience . Wherein, the amplitude of the anti-phase sound wave can also be set to be slightly smaller than the amplitude of the real-time noise, which can effectively prevent the acquired anti-phase sound wave from generating additional noise. At the same time, it can reduce the power consumption caused by playing anti-phase sound waves. It should be noted that the difference between the amplitude of the anti-phase sound wave and the amplitude of the real-time noise can be flexibly set according to actual conditions, which is not limited in the present disclosure.

In the technical solution of the present disclosure, as shown in FIG. 4 , the noise reduction method of the present disclosure can be realized by adding an ANC functional component to the air purifier. Among them, the anti-phase sound wave can be obtained in a variety of ways. The structure of the various ways and the corresponding ANC functional components will be described in detail below by way of examples:

1) pre-stored

As an exemplary embodiment, as shown in FIG. 5, the ANC functional component may include: an audio memory, pre-stored with a preset anti-phase sound wave obtained by inverting the pre-sampled real-time noise generated by the air purifier in the working state ; The audio processor controls the sound wave generating element to play the preset reversed-phase sound wave stored in the audio memory by issuing a playback instruction; the sound wave generating element plays the preset reversed-phase sound wave as the reversed-phase sound wave.

In this embodiment, the real-time noise generated by the air purifier in the working state can be collected in advance, and the corresponding anti-phase sound wave can be determined and generated through experiments, tests, etc., and then the anti-phase sound wave can be pre-stored in the in audio memory. Then, by reading from the audio memory by the audio processor and controlling the sound wave generating element to play the pre-stored anti-phase sound wave (that is, the preset anti-phase sound wave), the neutralization and cancellation of real-time noise can be realized, especially for air The real-time noise in the middle and low frequency bands produced by the purifier has a better offsetting effect.

2) Real-time generation

As another exemplary embodiment, as shown in FIG. 6 , the ANC functional component may include: a microphone, used to collect real-time noise generated by the air purifier in a working state; an audio processor, used to analyze the real-time noise collected by the microphone The corresponding real-time reversed-phase sound wave is obtained through inversion processing; the sound wave generating element plays the real-time reversed-phase sound wave as a reversed-phase sound wave.

In this embodiment, because the environment in which the air purifier is located may be different (such as the size of the room is different, the noise of the surrounding environment is different, etc.), the real-time noise produced by the air purifier may be different, so the method of generating reverse-phase sound waves in real time can be adopted. way to get the anti-phase sound wave. For example, the microphone collects the real-time noise generated by the air purifier under working conditions, and then the audio processor calculates the real-time noise collected by the microphone in real time to obtain a real-time reversed-phase sound wave, and controls the sound wave generating element to play the real-time reversed-phase sound wave. By collecting real-time noise, the final anti-phase sound wave is also real-time, so that it can not only better offset real-time noise, especially for the high-frequency noise caused by the scene, but also reduce the anti-phase sound wave. Sound waves that cannot cancel each other out with real-time noise, thereby reducing the impact of additional noise caused by anti-phase sound waves.

3) Combination of pre-storage and real-time generation

As yet another exemplary embodiment, as shown in FIG. 7 , by combining the above-mentioned embodiments shown in FIG. 5 and FIG. 6 , the ANC functional components may include: an audio memory, a microphone, an audio processor, and a sound wave generating element; wherein, each The operations performed by the elements are similar to those in the foregoing embodiments, and will not be repeated here.

In this embodiment, by combining the advantages of preset anti-phase sound waves and real-time anti-phase sound waves, the real-time noise in the middle and low frequency bands generated by the air purifier and the real-time noise in the high-band band caused by environmental differences are neutralized and offset, which can It can more effectively reduce the real-time noise generated by the air purifier in the working state, so as to avoid affecting the user's work, rest, and study.

In step 204, the direction of the user is determined.

In this embodiment, an infrared sensor may be used to determine the user's direction, and of course other means may also be used to determine the user's direction, which is not limited in the present disclosure.

In step 206, the acquired reverse-phase sound wave is played to perform noise reduction processing on real-time noise.

In this embodiment, please refer to FIG. 8 , which is a schematic diagram of an air purifier performing noise reduction processing. As shown in FIG. 8 , the user turns on the air purifier while resting, that is, the air purifier is in a working state. On the one hand, the air purifier generates real-time noise due to the rotation of the fan; on the other hand, the anti-phase sound wave corresponding to the real-time noise is obtained through any of the above steps. At the same time, the air purifier determines the direction of the user through the infrared sensor (that is, the direction indicated by the dotted arrow in Figure 8), and plays an anti-phase sound wave in this direction to at least offset some of the real-time noise generated by the air purifier, thereby Reduce the impact on the user's rest. Since the air purifier only needs to play anti-phase sound waves in the direction where the user is located, instead of playing anti-phase sound waves in each direction, the power consumption caused by playing anti-phase sound waves can be effectively reduced. At the same time, the noise reduction effect on the user's prescription can be optimized, so as to minimize the impact on the user's work, rest, and study.

In step 208, the noise-reduced sound waves obtained after the noise-reduction processing are collected.

In step 210 , it is judged whether the intensity of the sound wave after noise reduction is less than the preset playing threshold, if less, then return to step 208 , otherwise, go to step 212 .

In step 212, the amplitude of the anti-phase sound wave is adjusted so that the intensity of the noise-reduced sound wave is smaller than the preset playing threshold, and after the adjustment, go to step 206.

In this embodiment, the noise-reduced sound waves obtained after the noise-reduction processing can be further adjusted to achieve a better noise-reduction effect. For example, preset the playback threshold and the amplitude adjustment value for adjusting the amplitude of the noise-reduced sound wave. When the intensity of the noise-reduced sound wave is greater than or equal to the preset playback threshold, the preset amplitude adjustment value can be used to reduce or increase the amplitude of the anti-phase sound wave. , so that the intensity of the sound wave after noise reduction is less than the preset playback threshold.

For example, assume that the preset playing threshold is a dB, the preset amplitude adjustment value is b, the intensity of the anti-phase sound wave is cdB, and the intensity of the noise-reduced sound wave is d (d>a) dB. Then the amplitude of the anti-phase sound wave can be adjusted in a "trial and error" way. For example, the default adjustment method for the first time is to reduce the intensity of the anti-phase sound wave, that is, reduce the anti-phase sound wave to (c-b)dB; if the anti-phase sound wave with the intensity of (c-b)dB is played, the real-time noise is denoised. If the intensity of the final sound wave is less than d, it is determined to reduce the amplitude of the anti-phase sound wave until the intensity of the sound wave after noise reduction is less than the preset playback threshold; otherwise, increase the amplitude of the anti-phase sound wave until the intensity of the sound wave after noise reduction is less than the preset playback threshold threshold. Of course, the first adjustment may also be defaulted to increase the intensity of the anti-phase sound wave, which is not limited in the present disclosure.

It can be seen from the above embodiments that the present disclosure obtains and plays the anti-phase sound wave corresponding to the real-time noise generated by the air purifier, so that the anti-phase sound wave and the real-time noise can be neutralized and canceled each other, thereby at least part of the real-time noise can be eliminated, effectively Helps reduce the real-time noise generated by the air purifier when it is in operation. At the same time, by playing the anti-phase sound wave in the direction where the user is located, the impact on the user can be reduced and the user experience can be improved.

In addition, the technical solution of the present disclosure can also be applied to an independent noise reduction device independent of the air cleaner. For example, the separate noise reduction device can be configured in electronic devices such as mobile phones and tablet computers used by users. Taking a mobile phone as an example, similar to the above-mentioned air purifier equipped with ANC functional components, the mobile phone can implement the active noise reduction function of the air purifier by performing steps 202-212 as shown in FIG. 2 . Among them, the technical solution of the present disclosure can be used as a special noise reduction mode or noise reduction function, and when the user turns on the noise reduction mode or noise reduction function on the mobile phone, the air purifier based on the technical solution of the present disclosure can be realized. Noise reduction method. The noise reduction process of the mobile phone to the air purifier in the present disclosure will be described below with reference to FIG. 9 . As shown in Figure 9, the user turns on the air purifier and the noise reduction function in the mobile phone while resting. On the one hand, the air purifier generates real-time noise due to the rotation of the fan; on the other hand, the mobile phone obtains the anti-phase sound wave corresponding to the real-time noise through the method in step 202 above. At the same time, the mobile phone determines the direction the user is in (that is, the direction indicated by the dotted arrow in Figure 9), and plays an anti-phase sound wave in this direction to at least offset some of the real-time noise generated by the air purifier, thereby reducing or eliminating the impact on the user. impact.

Corresponding to the foregoing embodiments of the noise reduction method for the air purifier, the present disclosure also provides embodiments of the noise reduction device for the air purifier.

Fig. 10 is a block diagram of a noise reduction device for an air purifier according to an exemplary embodiment. Referring to FIG. 10 , the device includes an acquisition unit 101 and a playback unit 102 .

The acquiring unit 101 is configured to acquire the anti-phase sound wave corresponding to the real-time noise generated by the air purifier when the air purifier is in a working state;

The playing unit 102 is configured to play the acquired reverse-phase sound wave to perform noise reduction processing on the real-time noise.

Optionally, the amplitude of the anti-phase sound wave is slightly smaller than the amplitude of the real-time noise.

As shown in FIG. 11, FIG. 11 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment. On the basis of the embodiment shown in FIG. 10, the acquisition unit 101 may include : Read subunit 1011.

The reading subunit 1011 is configured to read a pre-stored preset anti-phase sound wave, and use the read preset anti-phase sound wave as the anti-phase sound wave;

Wherein, the preset anti-phase sound wave is obtained by inverting the sampled real-time noise generated by the air purifier in working state.

As shown in FIG. 12, FIG. 12 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment. On the basis of the embodiment shown in FIG. 10, the acquisition unit 101 may include : the acquisition subunit 1012 and the inversion processing subunit 1013.

The collection subunit 1012 is configured to collect real-time noise generated by the air purifier in a working state;

The phase inversion processing subunit 1013 is configured to perform phase inversion processing on the real-time noise to obtain a corresponding real-time phase-reversal sound wave, and use the real-time phase-reversal sound wave as the phase-reversal sound wave.

It should be noted that the structures of the acquisition subunit 1012 and the inversion processing subunit 1013 in the above-mentioned device embodiment shown in FIG. 12 may also be included in the above-mentioned device embodiment in FIG. 11 , and this disclosure is not limited thereto.

As shown in Figure 13, Figure 13 is a block diagram of another noise reduction device for an air purifier according to an exemplary embodiment. On the basis of the embodiment shown in Figure 10, the playback unit 102 may include : Determine the subunit 1021.

The determining subunit 1021 is configured to determine the direction of the user, and play the reverse-phase sound wave in the determined direction to perform noise reduction processing on the real-time noise.

As shown in Figure 14, Figure 14 is a block diagram of another noise reduction device for an air purifier shown according to an exemplary embodiment. On the basis of the embodiment shown in Figure 10, this embodiment may also include: adjusting Unit 103.

The adjustment unit 103 is configured to reduce or increase the amplitude of the anti-phase sound wave by using a preset amplitude adjustment value when the intensity of the noise-reduced sound wave obtained after the noise reduction process is greater than or equal to the preset playback threshold, so that the The intensity of the sound wave after the noise reduction is less than the preset playback threshold.

It should be noted that the structure of the adjustment unit 103 in the device embodiment shown in FIG. 14 may also be included in the device embodiments in FIGS. 11-13 , and the present disclosure is not limited thereto.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

As for the device embodiment, since it basically corresponds to the method embodiment, for related parts, please refer to the part description of the method embodiment. The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. It can be understood and implemented by those skilled in the art without creative effort.

Correspondingly, the present disclosure also provides a noise reduction device for an air purifier, including: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: when the air purifier is in a working state , acquire the anti-phase sound wave corresponding to the real-time noise generated by the air purifier; play the acquired anti-phase sound wave to perform noise reduction processing on the real-time noise.

Correspondingly, the present disclosure also provides a terminal, the terminal includes a memory, and one or more programs, wherein the one or more programs are stored in the memory, and are configured to be executed by one or more processors. The one or more programs include instructions for performing the following operations: when the air purifier is in a working state, obtain the anti-phase sound wave corresponding to the real-time noise generated by the air purifier; play the obtained anti-phase sound wave to Noise reduction processing is performed on the real-time noise mentioned above.

Fig. 15 is a block diagram of a noise reduction device 1500 for an air purifier according to an exemplary embodiment. For example, the apparatus 1500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

15, device 1500 may include one or more of the following components: processing component 1502, memory 1504, power supply component 1506, multimedia component 1508, audio component 1510, input/output (I/O) interface 1512, sensor component 1514, and communication component 1516.

The processing component 1502 generally controls the overall operations of the device 1500, such as those associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1502 may include one or more processors 1520 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 1502 may include one or more modules that facilitate interaction between processing component 1502 and other components. For example, processing component 1502 may include a multimedia module to facilitate interaction between multimedia component 1508 and processing component 1502 .

The memory 1504 is configured to store various types of data to support operations at the device 1500 . Examples of such data include instructions for any application or method operating on device 1500, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1504 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 1506 provides power to various components of the device 1500 . Power components 1506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1500 .

The multimedia component 1508 includes a screen that provides an output interface between the device 1500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 1508 includes a front camera and/or a rear camera. When the device 1500 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 1510 is configured to output and/or input audio signals. For example, the audio component 1510 includes a microphone (MIC), which is configured to receive external audio signals when the device 1500 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 1504 or sent via communication component 1516 . In some embodiments, the audio component 1510 also includes a speaker for outputting audio signals.

The I/O interface 1512 provides an interface between the processing component 1502 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

Sensor assembly 1514 includes one or more sensors for providing status assessments of various aspects of device 1500 . For example, the sensor component 1514 can detect the open/closed state of the device 1500, the relative positioning of components, such as the display and keypad of the device 1500, and the sensor component 1514 can also detect a change in the position of the device 1500 or a component of the device 1500 , the presence or absence of user contact with the device 1500 , the device 1500 orientation or acceleration/deceleration and the temperature change of the device 1500 . Sensor assembly 1514 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 1514 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor component 1514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 1516 is configured to facilitate wired or wireless communication between the apparatus 1500 and other devices. The device 1500 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 1516 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 1500 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 1504 including instructions, which can be executed by the processor 1520 of the device 1500 to implement the above method. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (14)

1. a kind of noise-reduction method of air purifier, which is characterized in that including：

When air purifier is in running order, the corresponding reverse phase sound of real-time noise that the air purifier generates is obtained Wave；

The reverse phase sound wave got is played to carry out noise reduction process to the real-time noise.

2. according to the method described in claim 1, it is characterized in that, the real-time noise for obtaining the air purifier and generating Corresponding reverse phase sound wave, including：

Pre-stored preset reverse phase sound wave is read, and using the preset reverse phase sound wave read as the reverse phase sound wave；Wherein, The preset reverse phase sound wave carries out reverse phase processing by the sampling real-time noise generated in the operating condition to the air purifier It obtains.

3. according to the method described in claim 1, it is characterized in that, the real-time noise for obtaining the air purifier and generating Corresponding reverse phase sound wave, including：

Acquire the real-time noise that the air purifier generates in the operating condition；

Reverse phase processing is carried out to obtain corresponding reverse phase sound wave in real time to the real-time noise, and the real-time reverse phase sound wave is made For the reverse phase sound wave.

4. according to the method described in claim 1, it is characterized in that, the reverse phase sound wave got that plays is with to described real-time Noise carries out noise reduction process, including：

It determines the direction residing for user, and the reverse phase sound wave is played to be carried out to the real-time noise on the direction determined Noise reduction process.

5. according to the method described in claim 1, it is characterized in that, the amplitude of the reverse phase sound wave is slightly less than the real-time noise Amplitude.

6. according to the method described in claim 1, it is characterized in that, further including：

When the intensity of sound wave is greater than or equal to default broadcasting threshold value after the noise reduction obtained after carrying out noise reduction process, shaken by default Width adjustment numerical value reduces or improves the amplitude of the reverse phase sound wave, so that the intensity of sound wave is less than default play after the noise reduction Threshold value.

7. a kind of denoising device of air purifier, which is characterized in that including：

Acquiring unit obtains the real-time noise that the air purifier generates and corresponds to when air purifier is in running order Reverse phase sound wave；

Broadcast unit plays the reverse phase sound wave got to carry out noise reduction process to the real-time noise.

8. device according to claim 7, which is characterized in that the acquiring unit includes：

Reading subunit reads pre-stored preset reverse phase sound wave, and using the preset reverse phase sound wave read as described anti- Phase sound wave；Wherein, the preset reverse phase sound wave is by the sampling real-time noise that is generated in the operating condition to the air purifier Reverse phase is carried out to handle to obtain.

9. device according to claim 7, which is characterized in that the acquiring unit includes：

Subelement is acquired, the real-time noise that the air purifier generates in the operating condition is acquired；

Reverse phase handles subelement, carries out reverse phase processing to the real-time noise to obtain corresponding reverse phase sound wave in real time, and by institute Real-time reverse phase sound wave is stated as the reverse phase sound wave.

10. device according to claim 7, which is characterized in that the broadcast unit includes：

Determination subelement determines the direction residing for user, and plays the reverse phase sound wave on the direction determined with to described Real-time noise carries out noise reduction process.

11. device according to claim 7, which is characterized in that the amplitude of the reverse phase sound wave is slightly less than described makes an uproar in real time The amplitude of sound.

12. device according to claim 7, which is characterized in that further include：

Adjustment unit, when the intensity of sound wave is greater than or equal to default broadcasting threshold value after the noise reduction obtained after carrying out noise reduction process, The amplitude of the reverse phase sound wave is reduced or improves by presetting amplitude adjustment numerical value, so that the intensity of sound wave is small after the noise reduction Threshold value is played in default.

13. a kind of electronic equipment, which is characterized in that including：

Processor；

Memory for storing processor-executable instruction；

Wherein, the processor is configured as：

When air purifier is in running order, the corresponding reverse phase sound of real-time noise that the air purifier generates is obtained Wave；

The reverse phase sound wave got is played to carry out noise reduction process to the real-time noise.

14. a kind of computer readable storage medium, is stored thereon with computer instruction, which is characterized in that the instruction is by processor It is realized when execution such as the step of any one of claim 1-6 the method.