CN114071220B - Sound effect adjusting method and device, storage medium and electronic equipment - Google Patents
Sound effect adjusting method and device, storage medium and electronic equipment Download PDFInfo
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- 230000000694 effects Effects 0.000 title claims abstract description 230
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000005236 sound signal Effects 0.000 claims abstract description 178
- 238000004590 computer program Methods 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 230000004304 visual acuity Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 19
- 238000005070 sampling Methods 0.000 description 13
- 238000004364 calculation method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
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Abstract
The application discloses an audio effect adjusting method, an audio effect adjusting device, a storage medium and electronic equipment, wherein the audio effect adjusting method comprises the following steps: acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment; calculating signal difference information between the first audio signal and the second audio signal; and determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information. Therefore, the method and the device realize self-adaptive adjustment of the sound effect mode according to the environment, improve the resolving power to the environment factors, realize the playing of sound with better sound effect by adapting to the environment factors, improve the audio playing effect, promote the use feeling of users, further avoid the defect that the user needs to manually adjust the sound effect parameters, and facilitate the use of the users.
Description
Technical Field
The application relates to the technical field of audio, in particular to an audio effect adjusting method, an audio effect adjusting device, a storage medium and electronic equipment.
Background
Electronic devices such as televisions, when the placement or setting position changes, differences in sound effects may be caused by changes in the environment. For example, placing a television on a desktop and hanging the television on a wall may cause the user to hear different sound effects of the television due to different absorption and reflection of sound by the desktop and the wall.
When the user uses the television, the user can achieve good sound quality effect only by manually setting the television, so that the user is inconvenient to use.
Disclosure of Invention
The embodiment of the application provides a sound effect adjusting method, a sound effect adjusting device, a storage medium and electronic equipment, which can automatically adjust sound effects according to the setting mode of the electronic equipment and are convenient for users to use.
In a first aspect, an embodiment of the present application provides an audio effect adjustment method, including:
acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
calculating signal difference information between the first audio signal and the second audio signal;
and determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
In a second aspect, embodiments of the present application further provide an audio adjustment apparatus, including:
the audio signal acquisition module is used for acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
an audio signal calculating module for calculating signal difference information between the first audio signal and the second audio signal;
and the sound effect switching module is used for determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
In a third aspect, embodiments of the present application further provide a computer-readable storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform the sound effect adjustment method as provided in any of the embodiments of the present application.
In a fourth aspect, embodiments of the present application further provide an electronic device, including a processor and a memory, where the memory has a computer program, and the processor is configured to execute the sound effect adjustment method provided in any embodiment of the present application by calling the computer program.
According to the technical scheme, the first audio signal is obtained, the second audio signal is subjected to environmental reflection, the signal difference information is calculated through the first audio signal and the second audio signal, and then the environmental factors affecting the transmission of the first audio signal can be determined according to the difference information between the two signals, and the influence of the placement or installation state of the electronic equipment on the first audio signal can be reflected based on the environmental factors.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of an audio adjustment method according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an audio playing circuit according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an audio adjusting apparatus according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present application based on the embodiments herein.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The embodiment of the application provides a sound effect adjusting method, and an execution main body of the sound effect adjusting method may be the sound effect adjusting device provided by the embodiment of the application or electronic equipment integrated with the sound effect adjusting device. The sound effect adjusting device can be realized in a hardware or software mode, and the electronic equipment can be equipment with an audio playing function, such as a smart phone, a tablet personal computer, a palm computer, a sound box, a television, an earphone, a microphone and the like.
Referring to fig. 1, fig. 1 is a flow chart of an audio adjusting method according to an embodiment of the present application.
When electronic equipment is placed in different positions, the electronic equipment is influenced by different factors such as the relative position relation between the object and the set position of a loudspeaker of the electronic equipment on the electronic equipment, so that differences possibly exist between echoes generated when the electronic equipment is placed in different positions.
For example, taking a television as an example, a speaker of the television plays sound, a microphone receives an echo, when the television is placed on a desk, the microphone receives an echo generated by reflection of the desk, when the television is hung on a wall, the microphone receives an echo reflected by the wall, and there may be a difference between the echo generated when the television is placed on the desk and when the television is hung on the wall due to factors such as different absorption and reflection properties of the desk and the wall to sound, and different relative positional relationship of the speaker on the television and the desk and the wall. Based on this, the television presets two sound effect modes, such as a desktop sound effect mode and a wall-mounted sound effect mode.
In this embodiment, by calculating the difference between the reference signal played by the television and the received echo signal, the reference signal is affected by the environmental factor, so as to analyze the environment where the television is located, and thus, whether the television is currently placed on a desktop or hung on a wall is obtained by this analysis, so that the automatic identification of the set position of the television can be realized.
Of course, when the scheme of the embodiment is applied to other electronic devices, the same or similar effect as that of a television can be generated, and details are not repeated herein, particularly, when the scheme provided by the embodiment is applied to a portable sound box or an earphone, the environment where the portable sound box or the earphone is located can be judged in different environments in real time, the self-adaptive adjustment of the sound effect is realized, the practicability is improved, the audio playing effect is improved, and the user experience is improved. In addition, it should be noted that, in the above scenario, two different placement positions placed on a table top or hung on a wall are merely illustrative, and not limiting to the solution of the present application, other placement modes may be included in other embodiments, and each placement mode may have a corresponding sound effect mode.
Next, a mode of determining the placement position of the electronic device will be described in detail.
The specific flow of the sound effect adjusting method provided in the embodiment of the application may be as follows:
101. and acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment.
The first audio signal is not reflected by the environment, the first audio signal is also called a reference signal, the second audio signal is an audio signal reflected by the environment, and the second audio signal is also called an echo signal.
There are various ways to obtain the first audio signal and the second audio signal:
for example, in one embodiment, step 101 includes:
1011. and acquiring a first audio signal input into a loudspeaker in the audio playing circuit, and playing the first audio signal.
1012. And collecting a second audio signal of the first audio signal after being reflected by the environment through a microphone.
In this embodiment, the first audio signal may be played through a speaker in the electronic device, and when the first audio signal is reflected by the environment, the first audio signal reflected by the environment is received through a microphone in the electronic device, so as to generate the second audio signal.
An audio playing circuit may be disposed in the electronic device, as shown in fig. 2, and fig. 2 is a schematic structural diagram of the audio playing circuit according to the embodiment of the present application. The audio playing circuit includes: the audio decoding module, the audio signal processing module, the audio through module/the audio mixing module, the power amplification module and the loudspeaker are sequentially connected, wherein the audio through module and the audio mixing module are connected in parallel, and the audio signal processing module is as follows:
the audio decoding module is used for decoding audio coded data received by the electronic equipment to obtain multi-channel audio data in a PCM format, wherein the multi-channel audio data can be stereo.
The audio signal processing module is used for performing sound effect processing on the multi-channel audio data, and the processing mode can adopt an equalizer, a virtual surrounding algorithm and other sound effect algorithms.
The audio through module is used for directly transmitting the audio data after the sound effect processing.
The audio mixing module is used for converting multi-channel audio data into mono audio data, and then copying the converted audio data to all channels so that the sound effects played by a plurality of speakers connected with the multi-channels are the same.
The power amplifier module is used for amplifying the audio signal and transmitting the audio signal to the loudspeaker for playing.
The selection of the audio pass-through module and the audio mixing module can be switched according to the debugging requirement of the electronic device, and the selection is not limited herein.
The audio playing circuit is also connected in parallel with a stoping circuit for obtaining the first audio signal, wherein the stoping circuit can be arranged at the output end of the power amplification module or at the input end of the power amplification module to obtain the audio signal input to the loudspeaker.
The microphone may be turned on simultaneously with the speaker, or the microphone may be turned on before, which is not limited herein specifically, and it should be noted that, after the speaker plays the first audio signal, the first audio signal propagates in the environment medium and is reflected to the microphone, and there is a delay when the microphone receives the first audio signal after being reflected by the environment, so when the speaker finishes playing, the microphone may be turned off by a delay, and a specific delay time may be later than a playing end time of the speaker, so long as it is ensured that all the first audio signals can be collected.
Illustratively, the first audio signal and the second audio signal are the same length. If the lengths of the two audio signals are different, the first audio signal and the second audio signal can be intercepted based on the frequency fluctuation condition of the audio signals in the time length, so that the lengths of the intercepted first audio signal and second audio signal are the same, and the audio information is basically consistent in the time dimension.
For example, in another embodiment, when the microphone is not disposed in the electronic device, the external microphone may be used to receive the first audio signal reflected by the environment, so as to generate the second audio signal, and the second audio signal may be transmitted to the electronic device through a network, a microphone access port, or the like.
102. Signal difference information between the first audio signal and the second audio signal is calculated.
Wherein, by calculating the signal difference information between the first audio signal and the second audio signal, the influence of the environmental factor when the first audio signal propagates in the environmental medium can be reflected.
For example, a frame energy difference between two signals is calculated as signal difference information between the first audio signal and the second audio signal. For another example, an echo cancellation algorithm is employed to calculate echo cancellation filter parameters between two signals as signal difference information between a first audio signal and a second audio signal.
103. And determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
In order to facilitate automatic adjustment of the sound effect mode according to the signal difference information, the sound effect mode can be preset, and the target sound effect mode is determined from the preset sound effect mode according to the signal difference information, so that the sound effect mode of the electronic equipment is directly switched to the target sound effect mode.
The preset sound effect modes can be multiple, and comprise a factory default sound effect mode. The preset sound effect mode can be set according to the type of the electronic device and the use scene.
For example, when the electronic device is a television, the placement positions of the television are generally two, i.e. the television is placed on a desktop or hung on a wall, so that two sound effect modes, i.e. a desktop sound effect mode and a wall-mounted sound effect mode, can be preset.
For another example, when the electronic device is a sound box, the sound box is generally placed in two places, for example, indoor or outdoor, so that two sound effect modes, i.e., an indoor sound effect mode and an outdoor sound effect mode, can be preset.
As can be seen from the above, the plurality of preset sound effect modes in the embodiments of the present application may be set with a corresponding number according to the setting position of the electronic device or the device type, or the number of preset sound effect modes may be set by user-definition, which is not limited herein.
Each preset sound effect mode has different sound effect parameters, the sound effect parameters are used for setting the playing parameters of the audio, different playing effects are generated when the audio signals are played, the sound effect parameters can be set by a person skilled in the art according to actual requirements, or the audio signals with the best playing effects are obtained by measuring experimental data when the electronic equipment is at different setting positions, and the sound effect parameters corresponding to the audio signals are used as the parameters of the preset sound effect modes.
When judging that the sound effect mode needs to be switched, the electronic equipment can be set by acquiring the parameters corresponding to the target sound effect mode, so as to realize the switching of the sound effect mode.
In some embodiments, when it is determined that the sound effect mode does not need to be switched, the current sound effect mode is continued to be used.
When the first audio signal is played through the loudspeaker, the electronic equipment is indicated to have an audio mode, the audio signal played in the audio mode is used as a reference signal, signal difference information is calculated on the reference signal and the echo signal through receiving the echo signal, then a target audio mode is determined according to the signal difference information, if the target audio mode is the same as the current audio mode, the audio mode does not need to be switched, and when the target audio mode is different from the current audio mode, the electronic equipment is controlled to be switched from the current audio mode to the target audio mode.
In particular, the present application is not limited by the order of execution of the steps described, and certain steps may be performed in other orders or concurrently without conflict.
In the embodiment of the application, the first audio signal is played, the second audio signal of the first audio signal after being reflected by the environment is collected, then the signal difference information between the first audio signal and the second audio signal is calculated, the obtained signal difference information can reflect the influence of environmental factors on the first audio signal, therefore, the setting position of the electronic equipment is analyzed according to the signal difference information, whether the audio mode needs to be switched is judged according to the setting position of the electronic equipment, when the audio mode needs to be switched, the target sound effect mode corresponding to the signal difference information is matched from a plurality of preset audio modes, and then the sound effect mode of the electronic equipment is switched to the target sound effect mode. The electronic equipment is self-adaptively adjusted according to the environment where the electronic equipment is located, the resolving power of the electronic equipment on environmental factors is improved, the sound with the best sound effect is played by adapting to the environmental factors, the audio playing effect is improved, the use feeling of a user is improved, furthermore, the need of manually adjusting sound effect parameters by the user is avoided, and the electronic equipment is convenient for the user to use.
For analysis of the signal difference information, various embodiments are provided for analyzing the signal difference information from different angles, as will be described in detail below.
In one embodiment, the signal difference information includes a frame energy difference, and step 102 includes:
determining a first target audio frame from the first audio signal, and determining a second target audio frame corresponding to the first target audio frame in the second audio signal;
a frame energy difference between the first target audio frame and the second target audio frame is calculated.
And if the lengths of the first audio signal and the second audio signal are the same, carrying out frame division processing on the first audio signal and the second audio signal respectively, obtaining a plurality of audio frames from the first audio signal, obtaining a plurality of audio frames from the second audio signal, further selecting one target audio frame from the plurality of audio frames respectively, and calculating the frame energy difference between the two target audio frames.
For example, the audio frame having the largest energy value may be selected from the plurality of audio frames in the first audio signal as the first target audio frame, and the audio frame having the largest energy value may be also selected from the plurality of audio frames in the second audio signal as the second target audio frame.
Of course, for the selection of the first target audio frame and the second target audio frame, any audio frame greater than a set threshold may be selected as the first target audio frame, and the corresponding second target audio frame may be selected from the second audio signal according to the first target audio frame.
The selection modes of the first target audio frame and the second target audio frame are not listed here, and only one first target audio frame and one second target audio frame can be selected, and then the energy difference between the first target audio frame and the second target audio frame is obtained by solving the energy difference between the first target audio frame and the second target audio frame to obtain one frame energy difference as signal difference information.
And after the first target audio frame and the second target audio frame are obtained, step 103 includes:
and determining a target sound effect mode from a plurality of preset sound effect modes according to the frame energy difference.
The multiple preset audio modes correspond to the frame energy difference intervals, and the intervals where the calculated frame energy differences are located are obtained through comparison, so that the target audio mode can be selected.
In another embodiment, a plurality of third target audio frames may be selected from the first audio signal, and a plurality of fourth target audio frames corresponding to the plurality of third target audio frames may be selected from the second audio signal, and energy differences between each two third target audio frames and the fourth target audio frames may be calculated, respectively, to obtain a plurality of energy differences.
Thus, in this embodiment, the signal difference information comprises a plurality of frame energy differences, wherein step 102 comprises:
determining a plurality of third target audio frames from the first audio signal, and determining a plurality of fourth target audio frames corresponding to the third target audio frames in the second audio signal respectively;
and calculating the frame energy difference between each third target audio frame and the corresponding fourth target audio frame to obtain a plurality of frame energy differences.
In this embodiment, a plurality of third target audio frames and a plurality of fourth target audio frames may be selected, the energy difference between each frame of audio frames may be calculated, or all audio frames in the first audio signal and all audio frames in the second audio signal may be selected, and the energy difference between each frame of audio frames may be calculated. Based on this, the number of the third target audio frame and the fourth target audio frame is not limited in the present embodiment, and may be selected according to actual requirements, as long as the third target audio frame and the fourth target audio frame correspond to each other and have the same number.
For example, the target audio frame may be selected with reference to the above embodiment, for example, the frame energy value is large, or the energy value is greater than a certain threshold, and the specific selection manner may be referred to in the above embodiment.
For the energy values of the audio frames in the above embodiments, in some embodiments, the energy value for each audio frame may be obtained in different ways, as follows:
for example, each audio frame has a plurality of sampling points, and each sampling point has an energy value, the average energy value of the sampling points may be calculated, and the average energy value may be used as the energy value of the audio frame, and of course, the energy value may be selected from the plurality of sampling points based on a maximum value, a median value, or the like, so that the energy value of a sampling point that meets the condition is used as the energy value representing the audio frame.
For another example, the energy value of the sampling point at the same position may be selected from each audio frame to be used as the energy value representing the audio frame.
The energy value of the audio frame is not limited to a specific value, and any energy value of the audio frame can be used in the embodiments of the present application.
In the following embodiments, for the energy value of each audio frame, the way that the energy value of the sampling point based on the maximum energy value is used as the energy value of the audio frame is exemplified, that is, in the following embodiments, the energy value of the audio frame is represented by the maximum energy value selected from a plurality of sampling points, and each frame energy difference is calculated, then for the sampling point with the maximum energy value in each third target audio frame and the sampling point with the maximum energy value in the corresponding fourth target audio frame, the difference between the two sampling points is calculated, and the difference is used as the frame energy difference between the representative third target audio frame and the corresponding fourth target audio frame.
The following is a formula for calculating the frame energy difference:
d＝20*log10(max(x)/max(y))
where d is the frame energy difference, max (x) is the energy value of the sampling point with the largest energy value in the third target audio frame, and max (y) is the energy value of the sampling point with the largest energy value in the fourth target audio frame.
However, there are various ways to select the target audio mode from the plurality of preset audio modes according to the plurality of frame energy differences after the plurality of frame energy differences are calculated, and the following description will be made with specific embodiments.
In some embodiments, the target sound effect mode may be determined according to the number of matches of the plurality of frame energy differences with each of the preset sound effect modes, in which embodiment, after the plurality of frame energy differences are calculated, step 103 may include:
determining a preset sound effect mode corresponding to each frame energy difference from a plurality of preset sound effect modes according to the frame energy difference interval corresponding to each preset sound effect mode;
counting the number of frame energy differences corresponding to each preset audio mode;
and determining a target sound effect mode from the plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset audio mode.
The frame energy difference interval may be divided by an energy difference threshold, for example, based on the first energy difference threshold and the second energy difference threshold, the frame energy difference may be divided into three frame energy difference intervals, and each frame energy difference interval represents a preset audio mode, which is illustrated below:
For example, continuing with the speaker example in the above embodiment, when the frame energy difference interval is [0,100], the first energy difference threshold is set to 30, and the second energy difference threshold is set to 60, so as to divide the frame energy difference into three frame energy difference intervals, respectively [0,30 ], [30,60 ], [60,100 ], where [0,30 ] represents an indoor sound effect mode, [30, 60) represents an outdoor sound effect mode, [60, 100) represents a hanging sound effect mode, and when the calculated frame energy difference is 40, the frame energy difference is divided into [30, 60) intervals, and the number of frame energy differences corresponding to the [30, 60) intervals are accumulated, and so on, each frame energy difference is divided into intervals according to a numerical value, and the number of frame energy differences corresponding to each interval is accumulated, so as to obtain the number of frame energy differences corresponding to each preset audio mode.
For another example, continuing with the television set example in the above embodiment, the audio modes of the television set include a desktop audio mode and a wall-mounted audio mode, so that only one energy difference threshold needs to be set, for example, the energy difference threshold is set to be 60, when each frame energy difference is divided, the frame energy difference greater than 60 is divided into the wall-mounted audio mode, otherwise, the frame energy difference is divided into the desktop audio mode, and then the number of frame energy differences corresponding to the desktop audio mode and the number of frame energy differences corresponding to the wall-mounted audio mode are counted.
Based on this, it should be noted that the foregoing examples are only used to illustrate the division form of the frame energy difference interval and the division manner of each frame energy difference calculated according to the frame energy difference interval, and specific values are also used only as illustrations, and are not intended to limit the scheme of the embodiment of the present application, where the energy difference threshold used to divide the frame energy difference area may be set to a value and number according to the actual situation of different electronic devices, and the respective frame energy difference intervals may also be discontinuous.
In this embodiment, the frame energy difference intervals are used to divide the plurality of frame energy differences, and the number of frame energy differences in each frame energy difference area is calculated to obtain the number of frame energy differences corresponding to each preset sound effect mode, so that the influence degree of the environmental factors on the first audio signal can be reflected from the number corresponding to each preset sound effect mode, when the number corresponding to a certain preset sound effect mode is large, the sound effect mode corresponding to the large number is used as the target sound effect mode, then whether the target sound effect target mode is the current sound effect mode is judged, if yes, sound effect mode switching is not needed, if not, the current sound effect mode is switched to the target sound effect mode, and the accuracy of judging the target sound effect mode can be improved.
There are also various ways to select the target sound effect mode based on the number, such as:
in an embodiment, determining a target sound effect mode from a plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset audio mode includes:
and determining the preset sound effect mode with the largest corresponding frame energy difference as a target sound effect mode.
The method comprises the steps of selecting a preset sound effect mode with the largest number as a target sound effect mode, so that one of a plurality of preset sound effect modes is selected as the target sound effect mode.
In another embodiment, the plurality of preset sound modes includes a desktop sound mode and a wall-mounted sound mode;
counting the number of frame energy differences corresponding to each preset audio mode, and determining the preset audio mode with the largest number of corresponding frame energy differences as a target audio mode, wherein the method comprises the following steps:
determining a first quantity of frame energy differences corresponding to the desktop sound effect mode, and determining a second quantity of frame energy differences corresponding to the wall-mounted sound effect mode;
and when the ratio of the first quantity to the second quantity is larger than a preset threshold value, determining the desktop sound effect mode as a target sound effect mode.
The preset threshold may be set to a value greater than 1 according to actual requirements, which is not limited herein. In this embodiment, a television is taken as an example, and a target sound effect mode is determined through a preset threshold, it can be understood that when there are a plurality of preset sound effect modes, a plurality of preset thresholds may be set to determine a target sound effect parameter, and for this implementation mode, not described in detail in this embodiment, it can be understood that a mode of reasonably setting a preset threshold through data statistics and further screening a target sound effect mode from a plurality of preset sound effect modes is practicable.
For the mode of adjusting the sound effect mode based on the television in this embodiment, by counting the first number of frame energy differences corresponding to the desktop sound effect mode and counting the second number of frame energy differences corresponding to the wall-mounted sound effect mode, a target sound effect mode can be selected according to the ratio of the first number to the second number, that is, when the ratio is greater than a preset threshold, the desktop sound effect mode is determined to be the target sound effect mode, otherwise, the wall-mounted sound effect mode is determined to be the target sound effect mode, so that an error in judging whether to adjust the sound effect mode is avoided. The mode can realize that the television automatically determines the setting position of the television and automatically switches the sound effect mode according to the setting position, so that the defect that a user needs to manually switch the sound effect mode of the television is avoided, the television is convenient for the user to use, in the scheme of the embodiment of the application, the sound effect mode of the television is not limited to two types, the sound effect mode can be added according to actual requirements, the diversity of audio playing of the television is realized, the audio playing performance of the television is enriched, and convenience is brought to the user.
In some embodiments, a value may be determined from the frame energy differences, and the value may be matched with a plurality of preset sound effect modes, and then the preset sound effect mode corresponding to the value is taken as the target sound effect mode, where after the frame energy differences are calculated, step 103 may include:
Determining a target frame energy difference from the plurality of frame energy differences;
and determining a target sound effect mode from a plurality of preset sound effect modes according to the target frame energy difference.
The manner of determining the target frame energy difference may be a manner of taking an average value, a median, etc. from the plurality of frame energy differences, and the manner of determining the target sound effect mode according to the target frame energy difference may refer to the manner that the signal difference information mentioned in the above embodiment includes the frame energy difference, which is not described herein again. It is to be understood that the target frame energy difference may not be limited to one, and there are various selection manners, which will not be described in detail herein, as long as the calculation amount can be reduced.
In some embodiments, step 102 comprises:
obtaining echo cancellation filter parameters according to the first audio signal and the second audio signal;
and calculating norms of the echo cancellation filter parameters, and taking the calculated norms as signal difference information.
The calculation of the echo cancellation filter parameters is based on an adaptive filter, which is also called echo cancellation filter. In the calculation, the first audio signal and the second audio signal are simultaneously input into the adaptive filter, wherein the second audio signal comprises external noise interference data, and the adaptive filter adjusts parameters to enable the value of the second audio signal to continuously approximate to the value of the first audio signal, so that the parameters of the adaptive filter after the parameters are adjusted are used as the echo cancellation filter parameters in the embodiment.
For echo cancellation filter parameters having different values in different frequency bands, the norm of the echo cancellation filter parameters may be calculated using the following formula:
n＝norm(W)＝max(|w 1 | |w 2 | … |w N |)
wherein n is a norm, the echo cancellation filter parameter is represented by W, and the values of the echo cancellation filter parameter in different frequency bands are represented by w= [ W ] 1 w 2 … w N ]And a representation, wherein N represents a filter length, norm (W) represents algebra of echo cancellation filter parameters for imparting length and size to the echo cancellation filter parameters in vector space.
In this embodiment, a maximum value is selected for calculating the norm in each frequency band, and, of course, with reference to the solution of the foregoing embodiment, an average value or a median value may be selected for calculating the norm in each frequency band.
After calculating the norm, step 103 includes:
and determining a target sound effect mode from a plurality of preset sound effect modes according to the norm.
The manner of determining the target audio mode according to the norm is similar to that of determining the target audio mode according to the frame energy difference in the above embodiment, and will not be described herein.
As can be seen from the above, the sound effect adjusting method provided by the embodiment of the invention can be used for playing the first audio signal, collecting the second audio signal after the first audio signal is reflected by the environment, calculating the signal difference information between the first audio signal and the second audio signal, and then reflecting the influence of the environmental factor on the first audio signal, so that the setting position of the electronic device is analyzed according to the signal difference information, thereby realizing the self-adaptive sound effect adjusting mode of the electronic device according to the environment where the electronic device is located, improving the resolving power of the environmental factor, realizing the sound with the best sound effect when the electronic device is adapted to the environmental factor, improving the audio playing effect, and improving the use feeling of the user. Furthermore, when the signal difference information is a plurality of frame energy differences, the frame energy differences can be divided by the frame energy difference interval, the number of the frame energy differences in each frame energy difference area can be obtained by calculation, and then the target sound effect mode is determined according to the number, so that the accuracy of judging the target sound effect mode can be improved, and the switching accuracy of the sound effect mode is higher.
In one embodiment, an audio conditioning apparatus 200 is also provided. Referring to fig. 3, fig. 3 is a schematic structural diagram of an audio adjusting apparatus 200 according to an embodiment of the present disclosure. The sound effect adjusting device 200 is applied to an electronic device, and the sound effect adjusting device 200 includes an audio signal acquisition module 201, an audio signal calculation module 202, and a sound effect switching module 203, as follows:
an audio signal obtaining module 201, configured to obtain a first audio signal and a second audio signal after the first audio signal is reflected by the environment;
an audio signal calculation module 202 for calculating signal difference information between the first audio signal and the second audio signal;
the sound effect switching module 203 is configured to determine a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
In some embodiments, the audio signal acquisition module 201 is further configured to:
acquiring a first audio signal of an input loudspeaker in an audio playing circuit, and playing the first audio signal;
and collecting a second audio signal of the first audio signal after being reflected by the environment through a microphone.
In some embodiments, the signal difference information comprises a frame energy difference, and the audio signal calculation module 202 is further configured to:
Determining a first target audio frame from the first audio signal, and determining a second target audio frame corresponding to the first target audio frame in the second audio signal;
a frame energy difference between the first target audio frame and the second target audio frame is calculated.
In some embodiments, the signal difference information comprises a plurality of frame energy differences, the audio signal calculation module 202 further configured to:
determining a plurality of third target audio frames from the first audio signal, and determining a plurality of fourth target audio frames corresponding to the third target audio frames in the second audio signal respectively;
calculating the frame energy difference between each third target audio frame and the corresponding fourth target audio frame to obtain a plurality of frame energy differences;
the sound effect switching module 203 is further configured to:
determining a preset sound effect mode corresponding to each frame energy difference from a plurality of preset sound effect modes according to the frame energy difference interval corresponding to each preset sound effect mode;
counting the number of frame energy differences corresponding to each preset audio mode;
and determining a target sound effect mode from the plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset audio mode.
In some embodiments, the sound effect switching module 203 is further configured to:
And determining the preset sound effect mode with the largest corresponding frame energy difference as a target sound effect mode.
In some embodiments, the plurality of preset sound modes includes a desktop sound mode and a wall-mounted sound mode, and the sound switching module 203 is further configured to:
determining a first quantity of frame energy differences corresponding to the desktop sound effect mode, and determining a second quantity of frame energy differences corresponding to the wall-mounted sound effect mode;
and when the ratio of the first quantity to the second quantity is larger than a preset threshold value, determining the desktop sound effect mode as a target sound effect mode.
In some embodiments, the audio signal calculation module 202 is further configured to:
obtaining echo cancellation filter parameters according to the first audio signal and the second audio signal;
and calculating norms of the echo cancellation filter parameters, and taking the calculated norms as signal difference information.
It should be noted that, the sound effect adjusting device 200 provided in the embodiment of the present application belongs to the same concept as the sound effect adjusting method in the above embodiment, and any method provided in the embodiment of the sound effect adjusting method may be implemented by the sound effect adjusting device 200, and detailed implementation processes of the method are shown in the embodiment of the sound effect adjusting method, which is not repeated herein.
It can be seen from the foregoing that, the sound effect adjusting device 200 provided in this embodiment of the present application is capable of playing a first audio signal, collecting a second audio signal after the first audio signal is reflected by the environment, and then calculating signal difference information between the first audio signal and the second audio signal, where the obtained signal difference information can reflect that the first audio signal is affected by an environmental factor, so as to analyze a setting position of an electronic device according to the signal difference information, thereby realizing self-adaptive adjustment of a sound effect mode of the electronic device according to the environment where the electronic device is located, improving a resolving power of the environmental factor, and realizing sound with optimal sound effect for playing in response to the environmental factor, improving a sound playing effect, and improving a user use feeling. Furthermore, when the signal difference information is a plurality of frame energy differences, the frame energy differences can be divided by the frame energy difference interval, the number of the frame energy differences in each frame energy difference area can be obtained by calculation, and then the target sound effect mode is determined according to the number, so that the accuracy of judging the target sound effect mode can be improved, and the switching accuracy of the sound effect mode is higher.
The embodiment of the application also provides electronic equipment which can be equipment with an audio playing function, such as a smart phone, a tablet personal computer, a palm computer, a sound box, a television, an earphone, a microphone and the like. As shown in fig. 4, fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 300 includes a processor 301 having one or more processing cores, a memory 302 having one or more computer-readable storage media, and a computer program stored on the memory 302 and executable on the processor. The processor 301 is electrically connected to the memory 302. It will be appreciated by those skilled in the art that the electronic device structure shown in the figures is not limiting of the electronic device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The processor 301 is a control center of the electronic device 300, connects various portions of the entire electronic device 300 using various interfaces and lines, and performs various functions of the electronic device 300 and processes data by running or loading software programs and/or modules stored in the memory 302, and invoking data stored in the memory 302, thereby performing overall monitoring of the electronic device 300.
In the embodiment of the present application, the processor 301 in the electronic device 300 loads the instructions corresponding to the processes of one or more application programs into the memory 302 according to the following steps, and the processor 301 executes the application programs stored in the memory 302, so as to implement various functions:
acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
calculating signal difference information between the first audio signal and the second audio signal;
and determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
As can be seen from the above, the electronic device provided in this embodiment is capable of playing a first audio signal, collecting a second audio signal after the first audio signal is reflected by the environment, calculating signal difference information between the first audio signal and the second audio signal, and then obtaining signal difference information, where the first audio signal is affected by environmental factors, so that a setting position of the electronic device is analyzed according to the signal difference information, thereby realizing adaptive adjustment of an audio mode of the electronic device according to the environment where the electronic device is located, improving resolution capability on the environmental factors, realizing sound with optimal audio effect when adapting to the environmental factors, improving audio playing effect, and improving use feeling of a user. Furthermore, when the signal difference information is a plurality of frame energy differences, the frame energy differences can be divided by the frame energy difference interval, the number of the frame energy differences in each frame energy difference area can be obtained by calculation, and then the target sound effect mode is determined according to the number, so that the accuracy of judging the target sound effect mode can be improved, and the switching accuracy of the sound effect mode is higher.
Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.
To this end, the embodiments of the present application provide a computer readable storage medium, and those skilled in the art will understand that all or part of the steps in implementing the methods of the embodiments described above may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, where the program when executed includes the following steps:
acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
calculating signal difference information between the first audio signal and the second audio signal;
and determining a target sound effect mode from a plurality of preset sound effect modes according to the signal difference information.
The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.
The storage medium may be ROM/RAM, magnetic disk, optical disk, etc. The steps in any one of the sound effect adjustment methods provided in the embodiments of the present application may be executed by the computer program stored in the storage medium, so that the beneficial effects that any one of the sound effect adjustment methods provided in the embodiments of the present application may be achieved, which are described in detail in the previous embodiments and are not repeated herein.
The foregoing describes in detail a method, an apparatus, a medium, and an electronic device for adjusting sound effects provided in the embodiments of the present application, and specific examples are applied to describe the principles and implementations of the present application, where the descriptions of the foregoing embodiments are only used to help understand the method and core ideas of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.
Claims (7)
1. A method of sound effect adjustment, comprising:
acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
determining a plurality of third target audio frames from the first audio signal, and determining a plurality of fourth target audio frames in the second audio signal, which correspond to the third target audio frames respectively;
calculating the frame energy difference between each third target audio frame and the corresponding fourth target audio frame to obtain signal difference information, wherein the signal difference information comprises a plurality of frame energy differences;
determining a preset sound effect mode corresponding to each frame energy difference from a plurality of preset sound effect modes according to the frame energy difference interval corresponding to each preset sound effect mode;
Counting the number of frame energy differences corresponding to each preset sound effect mode;
and determining a target sound effect mode from a plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset sound effect mode.
2. The method of claim 1, wherein the acquiring the first audio signal and the second audio signal after the first audio signal is reflected by the environment comprises:
acquiring a first audio signal of an input loudspeaker in an audio playing circuit, and playing the first audio signal;
and collecting a second audio signal of the first audio signal after being reflected by the environment through a microphone.
3. The method for adjusting sound effects according to claim 1, wherein said determining a target sound effect mode from among the plurality of preset sound effect modes according to the number of frame energy differences corresponding to each of the preset sound effect modes comprises:
and determining the preset sound effect mode with the largest corresponding frame energy difference as a target sound effect mode.
4. The sound effect adjustment method according to claim 1, wherein the plurality of preset sound effect modes include a desktop sound effect mode and a wall-mounted sound effect mode;
Counting the number of frame energy differences corresponding to each preset sound effect mode, and determining a target sound effect mode from a plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset sound effect mode, wherein the method comprises the following steps:
determining a first number of frame energy differences corresponding to the desktop sound effect mode, and determining a second number of frame energy differences corresponding to the wall-mounted sound effect mode;
and when the ratio of the first quantity to the second quantity is larger than a preset threshold value, determining the desktop sound effect mode as a target sound effect mode.
5. An audio conditioning apparatus, comprising:
the audio signal acquisition module is used for acquiring a first audio signal and a second audio signal of the first audio signal after being reflected by the environment;
an audio signal calculating module, configured to determine a plurality of third target audio frames from the first audio signal, and determine a plurality of fourth target audio frames corresponding to the plurality of third target audio frames in the second audio signal, respectively; calculating the frame energy difference between each third target audio frame and the corresponding fourth target audio frame to obtain signal difference information, wherein the signal difference information comprises a plurality of frame energy differences;
The sound effect switching module is used for determining a preset sound effect mode corresponding to each frame energy difference from a plurality of preset sound effect modes according to the frame energy difference interval corresponding to each preset sound effect mode; counting the number of frame energy differences corresponding to each preset sound effect mode; and determining a target sound effect mode from a plurality of preset sound effect modes according to the number of frame energy differences corresponding to each preset sound effect mode.
6. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, is caused to perform the sound effect adjustment method according to any one of claims 1 to 4.
7. An electronic device comprising a processor and a memory, the memory storing a computer program, wherein the processor is configured to perform the sound effect adjustment method of any one of claims 1 to 4 by invoking the computer program.
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| CN202111299528.XA CN114071220B (en) | 2021-11-04 | 2021-11-04 | Sound effect adjusting method and device, storage medium and electronic equipment |
| PCT/CN2022/119703 WO2023077980A1 (en) | 2021-11-04 | 2022-09-19 | Sound effect adjusting method and apparatus, storage medium, and electronic device |
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| CN202111299528.XA CN114071220B (en) | 2021-11-04 | 2021-11-04 | Sound effect adjusting method and device, storage medium and electronic equipment |
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