CN114363786A - Microphone test calibration device - Google Patents
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Abstract
The invention provides a microphone test calibration device, comprising: the microphone calibration system comprises a collecting module, an analyzing module and an executing module, wherein the collecting module is used for controlling a microphone to play a specified test audio and collecting a first audio played by the microphone, the analyzing module is used for converting the first audio into a first signal, analyzing the first signal and obtaining response data of the first signal, when the response data is inconsistent with standard response data, obtaining data difference, and the executing module is used for obtaining the intensity to be calibrated of the microphone according to the data difference and carrying out audio calibration work on the microphone so as to test the microphone before a user uses the microphone and eliminate echo in the process of using the microphone, thereby providing efficient and convenient use experience for the user.
Description
Technical Field
The invention relates to the field of calibration and detection, in particular to a microphone test calibration device.
Background
At present, most of electronic products with an external playing function have microphones, the microphones are relatively high in frequency of use in daily life, but due to the characteristics of the microphones, the microphones are very easily interfered by external environments and generate noise, generally, manual methods are adopted to respectively call each device and carry out parameter configuration on each device, and the manual methods have the problems that the calling process is complicated, the efficiency is low, and non-professional personnel are prone to errors in parameter configuration. In addition, the existing audio analysis instrument is adopted to carry out testing by self-contained software, test data needs to be manually exported, and when repeated testing is carried out under the same test condition, the previous data needs to be manually deleted, so that the test data is easy to be confused, the test result is easy to be influenced by testers, and the test accuracy is poor;
therefore, the microphone test calibration device is provided, the microphone can be tested before the microphone is used, echo is eliminated in the process of using the microphone, and efficient and convenient use experience is provided for a user.
Disclosure of Invention
The invention provides a microphone test calibration device which is used for testing a microphone before the microphone is used and eliminating echo in the process of using the microphone, so that efficient and convenient use experience is improved for a user.
The invention provides a microphone test calibration device, which comprises:
the acquisition module is used for controlling the microphone to play a specified test audio and acquiring a first audio played by the microphone;
the analysis module is used for converting the first audio frequency into a first signal, analyzing the first signal, acquiring response data of the first signal, and acquiring data difference when the response data is inconsistent with standard response data;
and the execution module is used for acquiring the intensity to be calibrated of the microphone according to the data difference amount and carrying out audio calibration on the microphone.
In one manner that may be implemented,
the collection module comprises:
an audio storage unit for storing the specified test audio;
and the audio acquisition unit is used for acquiring a first audio played by the microphone.
In one manner that may be implemented,
the analysis module comprises:
a conversion unit for converting the first audio into a first signal;
and the analysis unit is used for operating the first signal to obtain the operating data of the first signal and matching the response data in the attribute group corresponding to the preset matching-data list according to the attribute of the operating data.
In one manner that may be implemented,
the analysis unit includes:
the analysis unit is further configured to extract group response data corresponding to the attribute group when all the response data to be matched in the attribute group cannot be matched with the operation data.
In one manner that may be implemented,
the execution module includes:
the acquisition unit is used for acquiring the attribute of the operating data and acquiring the data difference between the group response data and the operation data;
the processing unit is used for determining the direction to be calibrated of the microphone according to the attribute and determining the intensity to be calibrated of the microphone according to the data difference;
and the execution unit is used for calibrating the microphone based on the calibration direction and the calibration intensity.
In one manner that may be implemented,
the processing unit includes:
acquiring a corresponding initial calibration model in a preset attribute-model list according to the attribute;
amplifying the operational data, inputting the operational data into the primary calibration model, and converting the amplified operational data into digital data;
running the digital data in the primary calibration model, collecting tone values corresponding to a preset time period according to a time sequence, and numbering each tone value according to a sequence;
according to the serial numbers, the tone values are respectively matched with the corresponding standard tone values, and first tone values which fail to be matched are extracted;
establishing a corresponding number of calibration layers in the initial calibration model based on the number of the first pitch values, and inputting the first pitch values into the calibration layers respectively;
regarding the average pitch value of the successfully matched second pitch values as reference pitch, and inputting the reference pitch value into each calibration layer respectively;
respectively acquiring a pitch difference between each first pitch value and the reference pitch, and respectively establishing a corresponding first calibration strength for the first pitch value in each calibration layer;
respectively extracting target second tone values adjacent to the first tone values according to the tone value numbers, respectively establishing corresponding first adjacent positions and second adjacent positions in each calibration layer, and placing the target second tones at the corresponding adjacent positions;
sequentially operating the corresponding tone at each position in the calibration layer, displaying a detection result on a preset sound spectrum, and marking a first result corresponding to the first tone value on the detection result;
judging whether the dispersion between the first result and the rest results is higher than a preset dispersion, if so, acquiring the corresponding dispersion, and establishing a corresponding second calibration strength for the first pitch value;
and inputting the first calibration intensity and the second calibration intensity into corresponding calibration layers respectively, and determining the calibration intensity of the microphone on corresponding audio.
In one manner that may be implemented,
the processing unit further comprises:
setting the second calibration strength to 1 when a dispersion between the first result and the remaining results is lower than a preset dispersion.
In one manner that may be implemented,
the execution module further comprises:
the acquisition unit is used for acquiring real-time audio played by the microphone when a user uses the microphone;
the processing unit is used for acquiring the real-time audio and converting the real-time audio into a real-time frequency domain signal;
acquiring a frequency band of the real-time frequency domain signal and energy of the real-time frequency domain signal, and judging whether echo exists in the real-time audio according to a standard energy range corresponding to the frequency band;
if so, dividing the real-time frequency domain signal into a plurality of sub-signals according to the frequency point corresponding to the frequency band as an interval;
regarding a sub-signal positioned at the first position on the real-time frequency domain signal as 1;
respectively acquiring the signal gain between each residual sub-signal and the corresponding adjacent previous sub-signal based on the position relation of the residual sub-signals, and sequentially inputting the signal gains into a preset broken line chart;
marking a point to be processed with the slope outside a preset slope range on a broken line in the broken line graph;
acquiring a sub-signal to be processed corresponding to the point to be processed, marking the sub-signal to be processed on the real-time frequency domain signal, and acquiring a first position of the sub-signal to be processed on the real-time frequency domain signal;
extracting a plurality of first sub-signals positioned in front of the first position on the real-time frequency domain signal, and traversing the sub-signals to be processed by using the first sub-signals respectively;
acquiring a first sub-signal overlapped with the sub-signal to be processed;
extracting the overlapping part of the signal to be processed and the first sub-signal and the intensity of the overlapping part on the sub-signal to be processed, and respectively establishing an echo signal corresponding to each sub-signal to be processed;
establishing a corresponding anti-echo signal according to the frequency of the echo signal;
and the execution unit is used for inputting the anti-echo signal into a corresponding signal to be processed and eliminating echo in the signal to be processed.
In one manner that may be implemented,
the audio acquisition unit is further configured to:
acquiring a second audio which is played by the microphone and is subjected to echo cancellation, and acquiring the signal to noise ratio of the second audio;
and when the signal-to-noise ratio is not within the range of the preset signal-to-noise ratio, generating a secondary silencing instruction and transmitting the secondary silencing instruction to the execution module.
In one manner that may be implemented,
the execution unit is further configured to:
and acquiring the anti-echo signal corresponding to the second audio to carry out secondary silencing instruction on the second audio based on the secondary silencing instruction.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating an exemplary embodiment of a microphone testing and calibrating apparatus;
FIG. 2 is a schematic diagram illustrating an assembly of an acquisition module of a microphone testing and calibrating apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an analysis module of a microphone testing and calibrating apparatus according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating components of an execution module of a microphone testing and calibrating apparatus according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
A microphone test calibration apparatus, as shown in fig. 1, comprising:
the acquisition module is used for controlling the microphone to play a specified test audio and acquiring a first audio played by the microphone;
the analysis module is used for converting the first audio frequency into a first signal, analyzing the first signal, acquiring response data of the first signal, and acquiring data difference when the response data is inconsistent with standard response data;
and the execution module is used for acquiring the intensity to be calibrated of the microphone according to the data difference amount and carrying out audio calibration on the microphone.
In this example, the first audio represents audio after the specified test audio is played through the microphone;
in this example, the first signal represents signaling the first audio;
in this example, the response data represents a running result response of the first signal.
The working principle and the beneficial effects of the technical scheme are as follows: the microphone is controlled to play the specified test audio, the corresponding first signal is analyzed by acquiring the first audio, the calibration intensity of the microphone is determined according to the response data of the first signal, and the calibration work is carried out on the microphone, so that the calibration work can be quickly completed, the microphone is detected in multiple directions, the working efficiency of the detection work is improved, the original detection work can be simplified, a professional is not needed to adjust, and the time for adjusting the microphone by a user is saved.
Example 2
On the basis of embodiment 1, the microphone test calibration apparatus, as shown in fig. 2, includes:
an audio storage unit for storing the specified test audio;
and the audio acquisition unit is used for acquiring a first audio played by the microphone.
The working principle and the beneficial effects of the technical scheme are as follows: the audio storage unit and the audio acquisition unit work in a division and cooperation mode to perform acquisition work, and acquisition efficiency is improved.
Example 3
On the basis of embodiment 1, the microphone testing calibration apparatus, as shown in fig. 3, includes:
a conversion unit for converting the first audio into a first signal;
and the analysis unit is used for operating the first signal to obtain the operating data of the first signal and matching the response data in the attribute group corresponding to the preset matching-data list according to the attribute of the operating data.
In this example, the match-data list indicates a list set in advance regarding matching of different attributes with different response data.
The working principle and the beneficial effects of the technical scheme are as follows: the audio is converted into the signal, so that corresponding operation data can be obtained quickly, the defect of the audio can be judged preliminarily according to the characteristics of the signal, and corresponding data corresponding to the operation data of the first signal is obtained to lay the foundation for subsequent test work.
Example 4
On the basis of embodiment 3, the microphone test calibration apparatus includes:
the analysis unit is further configured to extract group response data corresponding to the attribute group when all the response data to be matched in the attribute group cannot be matched with the operation data.
In this example, the response data to be matched is the existing response data in the attribute group, and the "matching response data" mentioned in embodiment 3 is the response data successfully matched with the operation data, which can also be understood as obtaining one matching data related to the operation data from a plurality of response data to be matched.
The working principle and the beneficial effects of the technical scheme are as follows: and when the response data to be matched cannot be matched with the operation data, matching the data to be matched with the corresponding attribute group, acquiring the corresponding group response data, and continuing the test work.
Example 5
On the basis of embodiment 1, the microphone test calibration apparatus, as shown in fig. 4, includes:
the acquisition unit is used for acquiring the attribute of the operating data and acquiring the data difference between the group response data and the operation data;
the processing unit is used for determining the direction to be calibrated of the microphone according to the attribute and determining the intensity to be calibrated of the microphone according to the data difference;
and the execution unit is used for calibrating the microphone based on the calibration direction and the calibration intensity.
In this example, the calibration direction of the microphone is related to the properties of the operational data;
for example, when the attribute of the operation data is class a, the calibration direction is volume adjustment.
The working principle and the beneficial effects of the technical scheme are as follows: the calibration direction and the calibration strength of the microphone are determined by acquiring the data difference between the group response data and the operation data, the microphone is accurately calibrated, and the purpose of completing calibration after testing is achieved.
Example 6
On the basis of embodiment 5, the microphone test calibration apparatus is characterized in that the processing unit includes:
acquiring a corresponding initial calibration model in a preset attribute-model list according to the attribute;
amplifying the operational data, inputting the operational data into the primary calibration model, and converting the amplified operational data into digital data;
running the digital data in the primary calibration model, collecting tone values corresponding to a preset time period according to a time sequence, and numbering each tone value according to a sequence;
according to the serial numbers, the tone values are respectively matched with the corresponding standard tone values, and first tone values which fail to be matched are extracted;
establishing a corresponding number of calibration layers in the initial calibration model based on the number of the first pitch values, and inputting the first pitch values into the calibration layers respectively;
regarding the average pitch value of the successfully matched second pitch values as reference pitch, and inputting the reference pitch value into each calibration layer respectively;
respectively acquiring a pitch difference between each first pitch value and the reference pitch, and respectively establishing a corresponding first calibration strength for the first pitch value in each calibration layer;
respectively extracting target second tone values adjacent to the first tone values according to the tone value numbers, respectively establishing corresponding first adjacent positions and second adjacent positions in each calibration layer, and placing the target second tones at the corresponding adjacent positions;
sequentially operating the corresponding tone at each position in the calibration layer, displaying a detection result on a preset sound spectrum, and marking a first result corresponding to the first tone value on the detection result;
judging whether the dispersion between the first result and the rest results is higher than a preset dispersion, if so, acquiring the corresponding dispersion, and establishing a corresponding second calibration strength for the first pitch value;
and inputting the first calibration intensity and the second calibration intensity into corresponding calibration layers respectively, and determining the calibration intensity of the microphone on corresponding audio.
In this example, the attribute-model list represents a corresponding list in which different initial calibration models are set for different attributes in advance;
in this example, the purpose of the amplify operand data is to: all data in the operational data are expanded, and the part with small data volume is prevented from being lost when the data are converted into digital data;
in this example, the pitch value represents the pitch of the corresponding audio portion of the digital data;
in this example, the standard pitch value indicates a standard pitch corresponding to the designated detection audio;
in this example, the first pitch value represents a pitch value that failed in matching among all pitch values;
in this example, the second pitch value indicates a pitch value that matches successfully among all pitch values, and may also indicate all pitch values other than the first pitch value;
in this example, the reference pitch value represents the average pitch value of all the pitch values (second pitch values) that match successfully;
in this example, the pitch difference represents the difference between the first pitch value and the reference pitch value;
in this example, the first calibration intensity value represents a calibration value that adjusts the first pitch value to an average level;
in this example, the target second pitch value is placed in both the first and second adjacent locations;
in this example, the first result represents a run result corresponding to a first pitch value, and the remaining pitch values represent run results corresponding to target second pitch values adjacent to the first pitch value;
in this example, the second calibration strength represents a calibration value that adjusts the first pitch value to a level that is neutral with respect to the neighboring pitch values.
The working principle and the beneficial effects of the technical scheme are as follows: the operation data is converted into the digital data, the tone value of the digital data is input into the preset model, the tone value which cannot be matched with the standard tone value is input into the calibration layer, and the corresponding tone value is calibrated by using the tone difference between the reference tone and the adjacent tone value, so that the calibration work is finished, the original tone value is reserved to the maximum extent, and the excessive calibration and the distortion are avoided.
Example 7
On the basis of embodiment 6, the microphone test calibration apparatus is characterized in that the processing unit further includes:
setting the second calibration strength to 1 when a dispersion between the first result and the remaining results is lower than a preset dispersion.
The working principle and the beneficial effects of the technical scheme are as follows: when the dispersion between the first result corresponding to the first pitch value and the residual result corresponding to the target pitch value is within the preset dispersion range, the first pitch value is determined not to need the calibration of the second calibration intensity, in order to avoid the disorder of the calibration system, the second calibration intensity is set to be 1, and the normal execution of the calibration work is ensured.
Example 8
On the basis of embodiment 5, the microphone test calibration apparatus is characterized in that the execution module further includes:
the acquisition unit is used for acquiring real-time audio played by the microphone when a user uses the microphone;
the processing unit is used for acquiring the real-time audio and converting the real-time audio into a real-time frequency domain signal;
acquiring a frequency band of the real-time frequency domain signal and energy of the real-time frequency domain signal, and judging whether echo exists in the real-time audio according to a standard energy range corresponding to the frequency band;
if so, dividing the real-time frequency domain signal into a plurality of sub-signals according to the frequency point corresponding to the frequency band as an interval;
regarding a sub-signal positioned at the first position on the real-time frequency domain signal as 1;
respectively acquiring the signal gain between each residual sub-signal and the corresponding adjacent previous sub-signal based on the position relation of the residual sub-signals, and sequentially inputting the signal gains into a preset broken line chart;
marking a point to be processed with the slope outside a preset slope range on a broken line in the broken line graph;
acquiring a sub-signal to be processed corresponding to the point to be processed, marking the sub-signal to be processed on the real-time frequency domain signal, and acquiring a first position of the sub-signal to be processed on the real-time frequency domain signal;
extracting a plurality of first sub-signals positioned in front of the first position on the real-time frequency domain signal, and traversing the sub-signals to be processed by using the first sub-signals respectively;
acquiring a first sub-signal overlapped with the sub-signal to be processed;
extracting the overlapping part of the signal to be processed and the first sub-signal and the intensity of the overlapping part on the sub-signal to be processed, and respectively establishing an echo signal corresponding to each sub-signal to be processed;
establishing a corresponding anti-echo signal according to the frequency of the echo signal;
and the execution unit is used for inputting the anti-echo signal into a corresponding signal to be processed and eliminating echo in the signal to be processed.
In this example, the real-time audio represents the audio that the user uttered by the microphone while using the microphone;
in this example, the frequency band represents a division band corresponding to a range in which the frequency of the real-time frequency domain signal is located;
in this example, the standard energy range represents the energy range of the real-time frequency domain signal in the corresponding frequency band under the normal condition;
in this example, the frequency point represents a frequency stop point on the frequency band;
in this example, the signal gain represents the energy difference between two adjacent sub-signals, and generally, the energy of the next sub-signal minus the energy of the previous adjacent sub-signal is the signal gain;
in this example, the anti-echo signal is opposite to the echo signal, and the energy of the two signals at the same position is added to 0;
for example, the echo signal is: 0, 1, 1, -1, 0, -1, then the anti-echo signal is: 0, -1, -1,1,0,1.
The working principle and the beneficial effects of the technical scheme are as follows: when a user uses the microphone, in order to avoid the microphone from generating echo, the real-time audio frequency of the microphone is collected and converted into a real-time frequency domain signal, the real-time frequency domain signal is divided into a plurality of sub-signals, whether the sub-signals are wrong or not is judged according to signal gains corresponding to different sub-signals, a first sub-signal which is overlapped with the sub-signal to be processed, namely the echo signal, is obtained, and therefore the echo signal can be eliminated by establishing an anti-echo signal, and the effect of purifying the real-time audio frequency is achieved.
Example 9
On the basis of embodiment 8, the microphone test calibration apparatus is characterized in that the audio acquisition unit is further configured to:
acquiring a second audio which is played by the microphone and is subjected to echo cancellation, and acquiring the signal to noise ratio of the second audio;
and when the signal-to-noise ratio is not within the range of the preset signal-to-noise ratio, generating a secondary silencing instruction and transmitting the secondary silencing instruction to the execution module.
In this example, the second audio represents real-time audio after echo cancellation.
The working principle and the beneficial effects of the technical scheme are as follows: in order to detect whether the audio frequency after echo cancellation meets the standard or not, the signal to noise ratio of the second audio frequency is obtained, whether the second audio frequency is qualified or not is judged through the signal to noise ratio, and a secondary silencing instruction is generated when the second audio frequency is unqualified.
Example 10
On the basis of embodiment 9, the microphone test calibration apparatus is characterized in that the execution unit is further configured to:
and acquiring the anti-echo signal corresponding to the second audio to carry out secondary silencing instruction on the second audio based on the secondary silencing instruction.
The working principle and the beneficial effects of the technical scheme are as follows: and carrying out secondary silencing work on the anti-echo signal in the second audio frequency to ensure that no echo exists when the user uses the microphone.
Example 11
On the basis of embodiment 8, the microphone test calibration apparatus for detecting the signal-to-noise ratio of the second audio includes:
the audio acquisition unit is also used for acquiring initial audio without echo cancellation and converting the initial audio into a first voice signal;
converting the second audio into a second voice signal, and dividing the first voice signal and the second voice signal into N sections respectively;
calculating the average occupation ratio of the echo signal in the second voice signal according to formula (I);
wherein b represents the average ratio of the echo signal in the second speech signal, qmRepresenting the amount of non-overlapping signal, y, between the mth first speech signal subsection and the mth second speech signal subsection2A second semaphore representing the second speech signal;
wherein the non-overlapping semaphores comprise: echo cancelled semaphore amAnd the amount of error signal b generated in the cancellation processmNamely: q. q.sm＝am+bmAnd b ism<am；
When the average occupation ratio of the echo signal in the second voice signal is not in a preset range, calculating the echo signal quantity of the echo signal in the second voice signal according to a formula (II);
wherein d represents the echo signal amount of the echo signal in the second speech signal, y1A first semaphore representing said first speech signal, fmRepresenting the average signal amplitude, f, of the valid signal in the mth first speech signal subsectionm,maxRepresenting the maximum signal amplitude, h, of the active signal in the mth first speech signal subsectionmRepresenting the average signal amplitude, h, of the valid signal in the mth second speech signal subsectionm,maxRepresenting the maximum signal amplitude, p, of the active signal in the mth second speech signal subsectionmRepresenting the sub-semaphore, y, of the mth second speech signal subsection2A second signal quantity representing the second speech signal, N representing a total number of the second signal sub-segments;
and when the calculation result of the formula (II) is not in the preset semaphore range, generating a secondary silencing instruction, and transmitting the secondary silencing instruction to the execution module.
In this example, the echo semaphore represents the energy of the echo signal in the second speech signal.
The working principle and the beneficial effects of the technical scheme are as follows: in order to further check whether the second audio has residual echo or not, the second audio is converted into a second voice signal, whether the echo in the second voice signal influences the normal use of the user or not is judged by calculating the average ratio of the echo signal in the second voice signal and the echo signal quantity in the second voice signal, if so, a secondary silencing instruction is generated for providing good use experience for the user, and is transmitted to the execution module, so that the execution module is used as a basis for carrying out secondary silencing.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A microphone test calibration device, comprising:
the acquisition module is used for controlling the microphone to play a specified test audio and acquiring a first audio played by the microphone;
the analysis module is used for converting the first audio frequency into a first signal, analyzing the first signal, acquiring response data of the first signal, and acquiring data difference when the response data is inconsistent with standard response data;
and the execution module is used for acquiring the intensity to be calibrated of the microphone according to the data difference amount and carrying out audio calibration on the microphone.
2. A microphone test calibration device as claimed in claim 1, wherein the acquisition module comprises:
an audio storage unit for storing the specified test audio;
and the audio acquisition unit is used for acquiring a first audio played by the microphone.
3. A microphone test calibration device as claimed in claim 1, wherein the analysis module comprises:
a conversion unit for converting the first audio into a first signal;
and the analysis unit is used for operating the first signal to obtain the operating data of the first signal and matching the response data in the attribute group corresponding to the preset matching-data list according to the attribute of the operating data.
4. A microphone test calibration device as claimed in claim 3, characterized in that the parsing unit comprises:
the analysis unit is further configured to extract group response data corresponding to the attribute group when all the response data to be matched in the attribute group cannot be matched with the operation data.
5. The microphone test calibration device of claim 1, wherein the execution module comprises:
the acquisition unit is used for acquiring the attribute of the operating data and acquiring the data difference between the group response data and the operation data;
the processing unit is used for determining the direction to be calibrated of the microphone according to the attribute and determining the intensity to be calibrated of the microphone according to the data difference;
and the execution unit is used for calibrating the microphone based on the calibration direction and the calibration intensity.
6. The microphone test calibration device of claim 5, wherein the processing unit comprises:
acquiring a corresponding initial calibration model in a preset attribute-model list according to the attribute;
amplifying the operational data, inputting the operational data into the primary calibration model, and converting the amplified operational data into digital data;
running the digital data in the primary calibration model, collecting tone values corresponding to a preset time period according to a time sequence, and numbering each tone value according to a sequence;
according to the serial numbers, the tone values are respectively matched with the corresponding standard tone values, and first tone values which fail to be matched are extracted;
establishing a corresponding number of calibration layers in the initial calibration model based on the number of the first pitch values, and inputting the first pitch values into the calibration layers respectively;
regarding the average pitch value of the successfully matched second pitch values as reference pitch, and inputting the reference pitch value into each calibration layer respectively;
respectively acquiring a pitch difference between each first pitch value and the reference pitch, and respectively establishing a corresponding first calibration strength for the first pitch value in each calibration layer;
respectively extracting target second tone values adjacent to the first tone values according to the tone value numbers, respectively establishing corresponding first adjacent positions and second adjacent positions in each calibration layer, and placing the target second tones at the corresponding adjacent positions;
sequentially operating the corresponding tone at each position in the calibration layer, displaying a detection result on a preset sound spectrum, and marking a first result corresponding to the first tone value on the detection result;
judging whether the dispersion between the first result and the rest results is higher than a preset dispersion, if so, acquiring the corresponding dispersion, and establishing a corresponding second calibration strength for the first pitch value;
and inputting the first calibration intensity and the second calibration intensity into corresponding calibration layers respectively, and determining the calibration intensity of the microphone on corresponding audio.
7. The microphone test calibration device of claim 6, wherein the processing unit further comprises:
setting the second calibration strength to 1 when a dispersion between the first result and the remaining results is lower than a preset dispersion.
8. The microphone test calibration apparatus of claim 5, wherein the execution module further comprises:
the acquisition unit is used for acquiring real-time audio played by the microphone when a user uses the microphone;
the processing unit is used for acquiring the real-time audio and converting the real-time audio into a real-time frequency domain signal;
acquiring a frequency band of the real-time frequency domain signal and energy of the real-time frequency domain signal, and judging whether echo exists in the real-time audio according to a standard energy range corresponding to the frequency band;
if so, dividing the real-time frequency domain signal into a plurality of sub-signals according to the frequency point corresponding to the frequency band as an interval;
regarding a sub-signal positioned at the first position on the real-time frequency domain signal as 1;
respectively acquiring the signal gain between each residual sub-signal and the corresponding adjacent previous sub-signal based on the position relation of the residual sub-signals, and sequentially inputting the signal gains into a preset broken line chart;
marking a point to be processed with the slope outside a preset slope range on a broken line in the broken line graph;
acquiring a sub-signal to be processed corresponding to the point to be processed, marking the sub-signal to be processed on the real-time frequency domain signal, and acquiring a first position of the sub-signal to be processed on the real-time frequency domain signal;
extracting a plurality of first sub-signals positioned in front of the first position on the real-time frequency domain signal, and traversing the sub-signals to be processed by using the first sub-signals respectively;
acquiring a first sub-signal overlapped with the sub-signal to be processed;
extracting the overlapping part of the signal to be processed and the first sub-signal and the intensity of the overlapping part on the sub-signal to be processed, and respectively establishing an echo signal corresponding to each sub-signal to be processed;
establishing a corresponding anti-echo signal according to the frequency of the echo signal;
and the execution unit is used for inputting the anti-echo signal into a corresponding signal to be processed and eliminating echo in the signal to be processed.
9. The microphone test calibration device of claim 8, wherein the audio acquisition unit is further configured to:
acquiring a second audio which is played by the microphone and is subjected to echo cancellation, and acquiring the signal to noise ratio of the second audio;
and when the signal-to-noise ratio is not within the range of the preset signal-to-noise ratio, generating a secondary silencing instruction and transmitting the secondary silencing instruction to the execution module.
10. The microphone test calibration apparatus of claim 9, wherein the execution unit is further configured to:
and acquiring the anti-echo signal corresponding to the second audio to carry out secondary silencing instruction on the second audio based on the secondary silencing instruction.
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