CN111711915B - Audio part selection method and audio part selection device thereof - Google Patents

Audio part selection method and audio part selection device thereof Download PDF

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Publication number
CN111711915B
CN111711915B CN202010616322.4A CN202010616322A CN111711915B CN 111711915 B CN111711915 B CN 111711915B CN 202010616322 A CN202010616322 A CN 202010616322A CN 111711915 B CN111711915 B CN 111711915B
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sensitivity
value
audio piece
frequency response
audio
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CN111711915A (en
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郭霞云
刘玉诚
何飞升
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Shenzhen Cannice Technology Co Ltd
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Shenzhen Cannice Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/001Monitoring arrangements; Testing arrangements for loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/004Monitoring arrangements; Testing arrangements for microphones

Abstract

The invention discloses an audio part selecting method, which comprises the following steps: sending out simulation sound waves; the audio frequency piece to be tested receives the simulation sound wave and generates a test sound wave according to the simulation sound wave; analyzing the simulated sound wave and the test sound wave, obtaining a first frequency response curve according to the simulated sound wave, and obtaining a second frequency response curve according to the test sound wave; selecting a test frequency value shared by at least two first frequency response curves and second frequency response curves, and respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency value; judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judgment result; the method can directly control the sensitivity quality of the audio piece and analyze the sensitivity of different audio pieces; the invention also discloses an audio component selecting device.

Description

Audio part selection method and audio part selection device thereof
Technical Field
The invention relates to the technical field of tone quality detection, in particular to an audio component selection method and an audio component selection device.
Background
The core components of the earphone include a microphone and a loudspeaker, the quality of the microphone and the loudspeaker is very important, and the sensitivity and the responsiveness of the microphone and the loudspeaker directly influence the quality of the earphone. Specifically, the microphone is mainly used for sound collection of the earphone, and particularly for an active noise reduction earphone, the matching of the microphone and each component needs to exceed the ordinary sensitivity and responsivity so as to record call sound and collect noise (for example, after ambient noise is collected, noise reduction signal processing is performed). The loudspeaker is mainly used for converting the audio signals processed by the noise reduction algorithm into sound waves and transmitting the sound waves to the outside, and the quality of the loudspeaker directly influences whether a user can clearly hear the sound waves.
The earphone needs to control and screen the microphone and the loudspeaker before mass production, and the rigor of control and screening directly influences the quality of the earphone, thereby influencing the popularity of the earphone after the earphone is put on the market. The existing high-end earphones have a certain user group which is generally a perfect person and has very high requirements on fine sound processing of the earphones. At present, the microphone and the loudspeaker are integrated and detected through integrated automation equipment before leaving a factory.
However, the microphone and the loudspeaker are inevitably damaged in the packaging and transportation processes, the damage occurs after the integrated detection, and the damage has certain concealment, generally difficult discrimination is realized, and the damage of the microphone and the loudspeaker is difficult to detect in the earphone assembling process (even if the finished earphone product leaves the factory and is detected, the damage of the microphone and the loudspeaker cannot be noticed), so that the quality of the earphone is reduced due to the fact that the microphone and the loudspeaker are damaged by misuse easily in the earphone assembling process, and the use experience is seriously influenced.
Therefore, an audio piece selection method and an audio piece selection apparatus thereof are needed to solve the above problems.
Disclosure of Invention
The invention aims to provide an audio piece selecting method, which can directly control the sensitivity quality of an audio piece and analyze the sensitivity of different audio pieces so as to find and remove audio pieces which do not meet the requirement before the assembly of an earphone according to the quality requirement of the earphone, avoid the influence on the quality of the earphone caused by using the audio pieces of which the sensitivity does not meet the requirement, and effectively ensure the factory quality of the earphone.
The invention further aims to provide an audio piece selecting device, which can directly control the sensitivity quality of an audio piece and analyze the sensitivity of different audio pieces so as to find and remove the audio pieces which do not meet the requirement before the assembly of the earphone according to the quality requirement of the earphone, avoid the influence on the quality of the earphone caused by using the audio pieces of which the sensitivity does not meet the requirement, and effectively ensure the factory quality of the earphone.
In order to realize the purpose, the invention discloses an audio piece selecting method, which comprises the following steps:
s1, emitting simulation sound waves;
s2, the audio piece to be tested receives the simulation sound wave and generates a test sound wave according to the simulation sound wave;
s3, analyzing the simulated sound waves and the test sound waves, obtaining a first frequency response curve according to the simulated sound waves, and obtaining a second frequency response curve according to the test sound waves;
s4, selecting a test frequency value shared by at least two first frequency response curves and second frequency response curves, and respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency value, wherein the test frequency values have different orders of magnitude;
s5, judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judgment result.
Compared with the prior art, the method has the advantages that the sensitivity of the audio piece to be tested is judged by comparing the first difference value of the decibel value corresponding to the test frequency value shared by the first frequency response curve of the simulated sound wave and the second frequency response curve of the test sound wave and judging whether the first difference value falls into the first sensitivity deviation interval, the method is simple, the first decibel value and the corresponding second decibel value of the same frequency test value are compared, the sensitivity quality of the audio piece can be directly controlled, the sensitivities of different audio pieces are analyzed, the audio pieces which do not meet the requirements are timely found and removed before the assembly of the earphone is completed according to the quality requirements of the earphone, the influence on the quality of the earphone due to the use of the audio pieces with the sensitivity which do not meet the requirements is avoided, and the factory quality of the earphone is effectively guaranteed.
Preferably, the step (5) specifically includes the following steps:
s51, if the first difference value falls into the first sensitivity deviation interval, judging that the audio piece to be detected is a high-sensitivity audio piece;
s52, if the first difference value does not fall into the first sensitivity deviation interval, the audio piece to be detected is judged to be a low-sensitivity audio piece.
Specifically, the first sensitivity deviation interval includes a plurality of first deviation values, all of the first deviation values are arranged in an increasing or decreasing order and have sensitivity levels corresponding to one another, and the step (51) further includes the steps of:
and S511, analyzing and obtaining the first deviation value closest to the first difference value, and judging the sensitivity level of the audio piece to be tested according to the first deviation value.
Preferably, the step (5) is further followed by the steps of:
s6, judging whether the waveform among the test frequency values in the second frequency response curve is a continuous waveform, if so, the audio piece to be tested has higher sensitivity; if not, the audio piece to be tested has lower sensitivity.
Preferably, the test frequency values are of different orders of magnitude from one another.
Preferably, the step (3) further comprises the steps of:
s31, obtaining a first phase curve according to the simulated sound wave, and obtaining a second phase curve according to the test sound wave;
s32, selecting a test phase value shared by at least two first phase curves and second phase curves, and respectively obtaining a first waveform angle value corresponding to the first phase curve and a second waveform angle value corresponding to the second phase curve according to the test phase value;
s33, judging whether a second difference value between the first waveform angle value and the corresponding second waveform angle value falls into a preset second sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to the judgment result.
Specifically, the step (33) specifically includes the steps of:
s331, if the second difference value falls into the second sensitivity deviation interval, judging that the audio piece to be detected is a high-sensitivity audio piece;
s332, if the second difference value does not fall into the second sensitivity deviation interval, judging that the audio piece to be detected is a low-sensitivity audio piece.
Preferably, the second sensitivity deviation interval is larger than the first sensitivity deviation interval.
Preferably, the audio device to be tested is a microphone or a speaker.
Correspondingly, the invention also discloses an audio component selecting device, which comprises:
the audio device to be tested receives the simulated sound waves and generates test sound waves according to the simulated sound waves;
the first acquisition module is used for analyzing the simulated sound waves and the test sound waves, obtaining a first frequency response curve according to the simulated sound waves and obtaining a second frequency response curve according to the test sound waves;
the second obtaining module is used for selecting a test frequency shared by at least two first frequency response curves and second frequency response curves, respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency, and the test frequency values have different orders of magnitude;
and the judging module is used for judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not and analyzing the sensitivity of the audio piece to be detected according to a judging result.
Drawings
FIG. 1 is a block flow diagram of an audio piece selection method of the present invention.
Fig. 2 is a connection block diagram of the audio piece selection apparatus of the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the audio piece selecting method of the present embodiment is suitable for quality control of an audio piece to be tested, where the audio piece to be tested is specifically a microphone or a speaker. The audio piece selecting method of the embodiment comprises the following steps:
and S1, emitting the simulated sound wave. The simulated sound wave is emitted through the simulated sound source, the simulated sound source can emit the sound wave with preset frequency and preset decibel sound by adjusting the frequency parameter and the decibel parameter so as to meet the test requirement, and the simulated sound wave is used as the standard sound source in the embodiment so as to be compared in the follow-up test.
The frequency of the simulated sound waves is usually between 50Hz and 1kHz, and the standard decibel sound is usually selected to be 40dB, which is the sound which is comfortable for the wearer of the earphone and is the sound wave parameter which is most frequently used in the wearing of the earphone. Of course, the parameters of the sound wave selected within the range of perception of the human ear are allowed, and the use effect is only optimal. Specifically, the frequency perceived by the human ear is between 20H and 20kHz, while the decibel sound perceived and acceptable by the human ear is between 0 and 90dB (decibel sounds exceeding 90dB can cause the tympanic membrane to burst).
And S2, the audio piece to be tested receives the simulated sound waves and generates test sound waves according to the simulated sound waves. Specifically, when the audio component to be tested is a microphone, the sound receiving surface of the microphone directly receives simulated sound waves, and the simulated sound waves are converted into test sound waves through a circuit of the microphone or an external circuit; when the audio piece to be tested is a loudspeaker, the simulated sound source transmits the audio signal corresponding to the simulated sound wave to the loudspeaker, and the loudspeaker receives the audio signal and transmits the audio signal outwards through the sounding surface of the loudspeaker.
And S3, analyzing the simulated sound wave and the test sound wave, obtaining a first frequency response curve according to the simulated sound wave, and obtaining a second frequency response curve according to the test sound wave. In the step, the simulated sound waves and the test sound waves need to be analyzed by a processing system and converted into corresponding frequency response curves. The conversion of sound waves into frequency response curves by the processing system involves conversion algorithms, which are well known to those skilled in the art and will not be described herein.
S4, selecting a test frequency value shared by at least two first frequency response curves and second frequency response curves, and respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency value. According to the inherent characteristics of the frequency response curves, any frequency value has a decibel value corresponding to the frequency value, therefore, in the step, the frequency is used as a data selection axis, the common test frequency value of the first frequency response curve and the second frequency response curve is selected to obtain a first decibel value and a second decibel value, the first decibel value and the second decibel value are measured under the same test frequency value, and therefore the first decibel value and the second decibel value can be used for judging the sensitivity of the audio piece to be measured.
In addition, in order to avoid instability of the test due to the use of a single test frequency value, the step selects a test frequency value shared by at least two first frequency response curves and at least two second frequency response curves, and obtains a plurality of groups of first decibel values and second decibel values through different selected test frequency values respectively so as to meet the test requirement.
It should be noted that, in order to ensure the reliability of the test, there is a large interval difference between different test frequency values. Preferably, the test frequency values are of different orders of magnitude, such as one test frequency value of 50Hz and another test frequency value of 600Hz, or such as one test frequency value of 100Hz and another test frequency value of 2 kHz.
S5, judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judgment result.
Preferably, the step (5) specifically includes the following steps:
s51, if the first difference value falls into the first sensitivity deviation interval, the audio piece to be detected is judged to be a high-sensitivity audio piece. Specifically, when the audio component is a microphone, the microphone is a high-sensitivity microphone; when the audio element is a speaker, the microphone is a high sensitivity speaker. The audio frequency piece that this step was sieved accords with the management and control requirement, can be used for the earphone assembly.
S52, if the first difference value does not fall into the first sensitivity deviation interval, the audio piece to be detected is judged to be a low-sensitivity audio piece. Specifically, when the audio component is a microphone, this microphone is a low-sensitivity microphone; when the audio element is a speaker, the microphone is a low sensitivity speaker. The audio frequency piece that this step was screened out does not conform to the management and control requirement, can not be used for the earphone assembly, is used for the earphone assembly by force, can reduce the quality of earphone.
Specifically, the first sensitivity deviation interval includes a plurality of first deviation values, and all the first deviation values are arranged in an increasing or decreasing order and have sensitivity levels corresponding to one another. For example, the first sensitivity deviation interval includes ten first deviation values, and the ten first deviation values are arranged in an increasing order, so that the sensitivity level corresponding to the first deviation value with the smallest value is the first sensitivity level, and the sensitivity level corresponding to the first deviation value with the largest value is the tenth sensitivity level, and if the ten first deviation values are 0.1,0.2, … …,0.9, and 1 in this order, the first deviation value corresponding to the first sensitivity level is 0.1, the first deviation value corresponding to the second sensitivity level is 0.2, the first deviation value corresponding to the ninth sensitivity level is 0.9, and the first deviation value corresponding to the tenth sensitivity level is 1.
The step (51) further comprises the steps of:
and S511, analyzing and obtaining the first deviation value closest to the first difference value, and judging the sensitivity level of the audio piece to be tested according to the first deviation value. And (4) matching the first deviation value closest to the first difference value in a searching mode, and evaluating the sensitivity grade of the high-sensitivity audio piece on the basis of the step (51) in a quantification mode so as to meet more diversified earphone quality requirements.
Preferably, the step (5) is further followed by the steps of:
s6, judging whether the waveform between the test frequency values in the first frequency response curve and the second frequency response curve accords with a preset deviation, if so, the audio piece to be tested has higher sensitivity; if not, the audio piece to be tested has lower sensitivity. Because the simulated sound wave/audio signal picked up by the same audio piece is generally continuous, the waveforms corresponding to the first frequency response curve and the second frequency response curve should also be continuous within a reasonable frequency range, for example, within a frequency interval formed by the selected test frequency values, and when the sensitivity of the audio piece to be tested reaches 100%, the waveforms corresponding to the first frequency response curve and the second frequency response curve should be completely overlapped. Therefore, according to whether the waveform between the test frequency values in the first frequency response curve and the second frequency response curve accords with the preset deviation or not, the sensitivity of the audio piece to be tested can be judged in an auxiliary mode from the other direction, and the sensitivity can be used as an auxiliary supplement of the judgment result in the step (5) and can be used for reference of detection personnel.
It should be noted that, in order to avoid misjudgment, when the waveform corresponding to the second frequency response curve is a continuous waveform without an obvious deviation curve and the waveform corresponding to the first frequency response curve conforms to a preset deviation, it can be considered that the audio device to be detected has higher sensitivity; when the waveform corresponding to the second frequency response curve is a continuous waveform obviously deviating from the curve and the waveform corresponding to the first frequency response curve does not conform to the preset deviation, the audio piece to be tested can be considered to have lower sensitivity.
Preferably, in order to further assist the step (5) of detecting the sensitivity of the audio piece to be detected, the step (3) further includes the following steps:
s31, obtaining a first phase curve according to the simulated sound wave, and obtaining a second phase curve according to the test sound wave;
s32, selecting a test phase value shared by at least two first phase curves and second phase curves, and respectively obtaining a first waveform angle value corresponding to the first phase curve and a second waveform angle value corresponding to the second phase curve according to the test phase value;
s33, judging whether a second difference value between the first waveform angle value and the corresponding second waveform angle value falls into a preset second sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to the judgment result.
Specifically, the step (33) specifically includes the steps of:
s331, if the second difference value falls into the second sensitivity deviation interval, judging that the audio piece to be detected is a high-sensitivity audio piece;
s332, if the second difference value does not fall into the second sensitivity deviation interval, judging that the audio piece to be detected is a low-sensitivity audio piece.
Further, the second sensitivity deviation interval includes a plurality of second deviation values, all of which are arranged in an increasing or decreasing order and have sensitivity levels corresponding to one another. For example, the second sensitivity deviation interval includes ten second deviation values, and the ten second deviation values are arranged in an increasing order, so that the sensitivity level corresponding to the second deviation value with the smallest value is the first sensitivity level, the sensitivity level corresponding to the second deviation value with the largest value is the tenth sensitivity level, and if the ten second deviation values are 0.1,0.2, … …,0.9, and 1 in this order, the second deviation value corresponding to the second sensitivity level is 0.1, the second deviation value corresponding to the second sensitivity level is 0.2, the second deviation value corresponding to the ninth sensitivity level is 0.9, and the second deviation value corresponding to the tenth sensitivity level is 1.
Said step (331) further comprises the steps of:
s3311, analyzing and obtaining the second deviation value closest to the second difference value, and judging the sensitivity level of the audio piece to be tested according to the second deviation value. And matching a second deviation value closest to the second difference value in a searching mode, and evaluating the sensitivity grade of the high-sensitivity audio piece on the basis of the step (51) in a quantification mode so as to meet more diversified earphone quality requirements.
According to the steps, the process of judging the sensitivity of the audio piece to be detected through the phase curve is similar to the process of judging the sensitivity of the audio piece to be detected through the frequency response curve, and in the actual operation process, the accuracy of judging the sensitivity of the audio piece to be detected through the frequency response curve is higher than the accuracy of judging the sensitivity of the audio piece to be detected through the phase curve, so that the mode of judging the sensitivity of the audio piece to be detected through the phase curve can be used as a reference supplement of the mode of judging the sensitivity of the audio piece to be detected through the frequency response curve, and operators can make a judgment better. In addition, in order to reduce misjudgment and misdetection, the second sensitivity deviation interval is larger than the first sensitivity deviation interval, so that the phase deviation tolerance of the phase curve is larger than the frequency deviation tolerance of the frequency curve, and the misjudgment of the sensitivity of the audio piece to be detected caused by a small number of distorted sound waves (which are not displayed on decibels) is avoided.
It is noted that the simulation sound source and the processing system used in the method can be independent devices, and the simulation sound source and the processing system are in communication connection to realize the sending and receiving of sound waves and the data processing judgment. Of course, the artificial sound source and the processing system can also be integrated in the consent device, so that the device has the functions of transmission, reception and data processing judgment of sound waves. In addition, the sensitivity judgment process related to the method is realized by a processing system, and the method has high automation and high judgment speed and is accurate. Certainly, because the audio piece to be detected has unknown damage, the curve trend related to the method can be judged, screened and rejected in a manual mode, so that the error of the processing system in identifying the curve can be avoided.
With reference to fig. 1 and fig. 2, the sensitivity of the audio piece to be tested is determined by comparing the first difference of decibel values corresponding to the test frequency value shared by the first frequency response curve of the simulated sound wave and the second frequency response curve of the test sound wave and determining whether the first difference falls within the first sensitivity deviation interval.
Referring to fig. 2, correspondingly, the present invention further discloses an audio component selecting apparatus 100, which includes:
the simulation sound source 10 is used for emitting simulation sound waves, and the audio piece to be tested receives the simulation sound waves and generates test sound waves according to the simulation sound waves;
the first obtaining module 20 is configured to analyze the simulated sound wave and the test sound wave, obtain a first frequency response curve according to the simulated sound wave, and obtain a second frequency response curve according to the test sound wave;
the second obtaining module 30 is configured to select a test frequency common to at least two of the first frequency response curves and the second frequency response curves, and obtain a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency;
and the judging module 40 is used for judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judging result.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims (9)

1. The audio piece selection method is characterized by comprising the following steps of:
sending out simulation sound waves;
the audio frequency piece to be tested receives the simulation sound wave and generates a test sound wave according to the simulation sound wave;
analyzing the simulated sound wave and the test sound wave, obtaining a first frequency response curve according to the simulated sound wave, and obtaining a second frequency response curve according to the test sound wave;
selecting a test frequency value shared by at least two first frequency response curves and second frequency response curves, and respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency value, wherein the test frequency values have different orders of magnitude;
and judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judgment result.
2. The audio piece selection method according to claim 1, wherein the step of determining whether a first difference between the first decibel value and the corresponding second decibel value falls within a preset first sensitivity deviation interval and analyzing the sensitivity of the audio piece to be tested according to the determination result specifically comprises the steps of:
if the first difference value falls into the first sensitivity deviation interval, judging that the audio piece to be detected is a high-sensitivity audio piece;
and if the first difference value does not fall into the first sensitivity deviation interval, judging that the audio piece to be detected is a low-sensitivity audio piece.
3. The audio piece selection method according to claim 2, wherein the first sensitivity deviation interval includes a plurality of first deviation values, all of the first deviation values are arranged in an increasing or decreasing order and have sensitivity levels corresponding to one another, and if the first deviation value falls within the first sensitivity deviation interval, the audio piece to be tested is determined to be a high-sensitivity audio piece, further comprising the steps of:
and analyzing to obtain the first deviation value closest to the first difference value, and judging the sensitivity level of the audio piece to be tested according to the first deviation value.
4. The audio piece selection method according to claim 1, wherein the determining whether the first difference between the first decibel value and the corresponding second decibel value falls within a preset first sensitivity deviation interval analyzes the sensitivity of the audio piece to be tested according to the determination result, and then further comprises the following steps:
judging whether the waveform between the test frequency values in the first frequency response curve and the second frequency response curve accords with a preset deviation, if so, the audio frequency component to be tested has higher sensitivity; if not, the audio piece to be tested has lower sensitivity.
5. The audio piece selection method of claim 1, wherein said analyzing said simulated sound waves and said test sound waves to obtain a first frequency response curve based on said simulated sound waves and a second frequency response curve based on said test sound waves, further comprises the steps of:
obtaining a first phase curve according to the simulated sound wave, and obtaining a second phase curve according to the test sound wave;
selecting a test phase value shared by at least two first phase curves and second phase curves, and respectively obtaining a first waveform angle value corresponding to the first phase curve and a second waveform angle value corresponding to the second phase curve according to the test phase value;
and judging whether a second difference value between the first waveform angle value and the corresponding second waveform angle value falls into a preset second sensitivity deviation interval or not, and analyzing the sensitivity of the audio piece to be detected according to a judgment result.
6. The audio piece selection method according to claim 5, wherein the step of determining whether a second difference between the first waveform angle value and the corresponding second waveform angle value falls within a preset second sensitivity deviation interval and analyzing the sensitivity of the audio piece to be tested according to the determination result comprises the following steps:
if the second difference value falls into the second sensitivity deviation interval, judging that the audio piece to be detected is a high-sensitivity audio piece;
and if the second difference value does not fall into the second sensitivity deviation interval, judging that the audio piece to be detected is a low-sensitivity audio piece.
7. The audio piece selection method of claim 6, wherein the second sensitivity deviation interval is greater than the first sensitivity deviation interval.
8. The audio piece selection method according to claim 1, characterized in that: the audio piece to be tested is a microphone or a loudspeaker.
9. An audio piece selection device, comprising:
the audio device to be tested receives the simulated sound waves and generates test sound waves according to the simulated sound waves;
the first acquisition module is used for analyzing the simulated sound waves and the test sound waves, obtaining a first frequency response curve according to the simulated sound waves and obtaining a second frequency response curve according to the test sound waves;
the second obtaining module is used for selecting a test frequency value shared by at least two first frequency response curves and second frequency response curves, respectively obtaining a first decibel value corresponding to the first frequency response curve and a second decibel value corresponding to the second frequency response curve according to the test frequency value, and the test frequency values have different orders of magnitude;
and the judging module is used for judging whether a first difference value between the first decibel value and the corresponding second decibel value falls into a preset first sensitivity deviation interval or not and analyzing the sensitivity of the audio piece to be detected according to a judging result.
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