CN112291696A - Audio chip testing method, storage device and computer equipment - Google Patents

Audio chip testing method, storage device and computer equipment Download PDF

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Publication number
CN112291696A
CN112291696A CN201910667182.0A CN201910667182A CN112291696A CN 112291696 A CN112291696 A CN 112291696A CN 201910667182 A CN201910667182 A CN 201910667182A CN 112291696 A CN112291696 A CN 112291696A
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China
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audio
amplitude value
audio signal
channel
amplitude
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CN201910667182.0A
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CN112291696B (en
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郭森
蒋筑阳
冯志强
王炼
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Shenzhen Positive Precision Manufacturing Co.,Ltd.
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Shenzhen Voxtech Co Ltd
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Priority to CN202210389824.7A priority Critical patent/CN114900782A/en
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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
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/51Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S1/00Two-channel systems

Abstract

The application discloses a testing method of an audio chip, a storage device and computer equipment. The test method of the audio chip comprises the following steps: inputting a first audio signal to an audio chip, wherein the first audio signal is a standard audio signal; acquiring second audio signals which are respectively output from a left channel and a right channel after being processed by an audio chip; respectively acquiring a first amplitude value and a second amplitude value of a second audio signal output by a left channel and a right channel on a specific frequency point, wherein the specific frequency point is the frequency value of the first audio signal; determining whether a difference between the first amplitude value and the second amplitude value is less than a first amplitude threshold; if so, the performance of the left channel and the right channel of the audio chip meets the requirement. By determining whether the difference value between the first amplitude value and the second amplitude value of the second audio signal output from the left channel and the right channel on the specific frequency point is smaller than the first amplitude threshold value, the audio chip with the similar output capacity of the left channel and the right channel can be detected.

Description

Audio chip testing method, storage device and computer equipment
Technical Field
The present application relates to the field of audio chip testing technologies, and in particular, to a method for testing an audio chip, a storage device, and a computer device.
Background
With the rapid development of electronic technology, the functional complexity of electronic products is increasing day by day, and the requirements for production testing of electronic products are also increasing day by day. In order to meet the requirements of audio electronic product production test, the functions of refinement and automation test need to be realized in the production process.
The audio chip has the output capability of the left and right sound channels, and if the output capability of the left and right sound channels is too different, the performance of the audio chip does not meet the requirement, and the quality of the earphone is seriously affected, so that a method for detecting the output capability of the left and right sound channels of the audio chip is needed.
Disclosure of Invention
The application mainly provides a testing method of an audio chip, a storage device and computer equipment, and aims to solve the problem of how to detect the output capacity of left and right sound channels of the audio chip.
In order to solve the technical problem, the application adopts a technical scheme that: a method for testing an audio chip is provided. The test method of the audio chip comprises the following steps: inputting a first audio signal to an audio chip, wherein the first audio signal is a standard audio signal; acquiring second audio signals which are respectively output from a left channel and a right channel after being processed by an audio chip; respectively acquiring a first amplitude value and a second amplitude value of a second audio signal output by a left channel and a right channel on a specific frequency point, wherein the specific frequency point is the frequency value of the first audio signal; determining whether a difference between the first amplitude value and the second amplitude value is less than a first amplitude threshold; if so, the performance of the left channel and the right channel of the audio chip meets the requirement.
In order to solve the above technical problem, another technical solution adopted by the present application is: a memory device is provided. The storage device stores a program that, when executed, enables the method described above to be implemented.
In order to solve the above technical problem, the present application adopts another technical solution: a computer device is provided. The computer device comprises a processor coupled to a memory for storing a program and a memory for executing the program to implement the method as described above.
The beneficial effect of this application is: different from the prior art, the application discloses a testing method of an audio chip, a storage device and computer equipment. The first amplitude value and the second amplitude value of the second audio signal output by the audio chip from the left channel and the right channel on the specific frequency point are obtained, whether the output capacity of the left channel and the output capacity of the right channel of the audio chip are close or not is further distinguished by determining whether the difference value of the first amplitude value and the second amplitude value is smaller than a first amplitude threshold value or not, therefore, the difference degree of the output capacity of the left channel and the output capacity of the right channel of the audio chip can be detected by the testing method of the audio chip, the audio chip with the performance meeting the requirements is further selected, and the quality of the earphone is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:
FIG. 1 is a flowchart illustrating an embodiment of a method for testing an audio chip provided in the present application;
FIG. 2 is a detailed flowchart of step S13 in the flowchart of FIG. 1;
FIG. 3 is a schematic flow chart diagram of FIG. 2 after step S133;
FIG. 4 is another schematic flow chart diagram after step S133 in the schematic flow chart diagram of FIG. 2;
FIG. 5 is a schematic block diagram of an embodiment of a computer device provided herein;
fig. 6 is a schematic structural diagram of an embodiment of a memory device provided in 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a testing method of an audio chip according to the present application. In this embodiment, the test method includes:
s11: a first audio signal is input to an audio chip.
And inputting a first audio signal to the audio chip, wherein the first audio signal is a standard audio signal. For example, the first audio signal is an audio signal of 1KHz, and the first audio signal input to the audio chip every time is the same.
The audio chip can be an independent chip, and one of a plurality of audio chips in the board body to be tested can be tested. For example, the testing method of the present application can simultaneously test a plurality of audio chips disposed on a board body to be tested.
Specifically, inputting a first audio signal to an audio chip specifically includes: a plurality of first audio signals are respectively input from two opposite sides of a board body to be tested, each first audio signal corresponds to one audio chip, and the first audio signals are used for testing the plurality of audio chips simultaneously.
Optionally, a plurality of first audio signals may also be input from one side of the test board body, so that the plurality of audio chips are simultaneously tested by using the first audio signals.
S12: and acquiring second audio signals which are respectively output from the left channel and the right channel after being processed by the audio chip.
And acquiring second audio signals respectively output from the left channel and the right channel after being processed by the audio chip, wherein the audio chip comprises the left channel and the right channel, so that the audio chip receives the first audio signal and respectively outputs the respective second audio signals from the left channel and the right channel after being processed.
The second audio signal may have a difference in sound received by human ears due to a difference in physical difference between the left channel and the right channel, and if the difference is too large, information heard by human ears is interfered. For example, the sound emitted by the left channel is large and the sound emitted by the right channel is small; alternatively, the sound from the left channel carries a lot of noise, while the sound from the right channel is in good condition. These conditions will seriously affect the user experience, and detract from the quality of the product. Therefore, the capability of the audio chip for outputting audio in the left channel and the right channel needs to be tested to eliminate the audio chips which do not meet the quality requirement.
S13: and respectively acquiring a first amplitude value and a second amplitude value of a second audio signal output by the left channel and the right channel at a specific frequency point.
The method comprises the steps of respectively obtaining a first amplitude value and a second amplitude value of a second audio signal output by a left channel and a right channel on a specific frequency point, wherein the specific frequency point is the frequency value of the first audio signal, the first amplitude value is the amplitude peak value of the second audio signal corresponding to the left channel, and the second amplitude value is the amplitude peak value of the second audio signal corresponding to the right channel.
Specifically, the first audio signal is a sine wave signal, the signal output by the audio chip is a square wave signal, the square wave signal is filtered and then output as the sine wave signal, the output sine wave signal needs to be converted into audio frequency domain information, and then a first amplitude value and a second amplitude value of the audio frequency domain information corresponding to the left channel and the right channel on a specific frequency point are acquired.
Specifically, referring to fig. 2, the method for acquiring the first amplitude value and the second amplitude value includes the following steps:
s131: a plurality of data points of a second audio signal for a left channel and a right channel are collected in a time sequence.
And sequentially collecting data points corresponding to a plurality of time points from any time point of the second audio signal. The data points are amplitude information of corresponding time points on the second audio signal.
For example, 1024 data points may be acquired continuously in one cycle, or 512 data points may be acquired continuously in one cycle.
S132: fourier transforming the plurality of data points to obtain audio frequency domain information corresponding to the second audio signals of the left and right channels.
And carrying out Fourier transform on a plurality of data points collected by a second audio signal output from the left channel so as to acquire audio frequency domain information corresponding to the data points. And carrying out Fourier transform on a plurality of data points collected by the second audio signal output from the right channel so as to acquire audio frequency domain information corresponding to the data points.
After the audio frequency domain information corresponding to the second audio signals of the left channel and the right channel is obtained, the amplitude values at the specific frequency point can be collected, and step S133 is executed.
S133: and acquiring a first amplitude value and a second amplitude value of the audio frequency domain information of the left channel and the right channel on a specific frequency point.
The method comprises the steps of obtaining a first amplitude value of the audio frequency domain information of the left channel on a specific frequency point, and obtaining a second amplitude value of the audio frequency domain information of the right channel on the specific frequency point, wherein the first amplitude value and the second amplitude value are the same specific frequency point and respectively correspond to the left channel and the right channel.
The specific frequency point is the frequency value of the first audio signal. For example, if the first audio signal is 1kHz, the specific frequency point is 1 kHz. The audio frequency domain information curve obtained after Fourier transform has amplitude values at 0 and the frequency points corresponding to the frequency value of the first audio signal, the amplitude values of the rest frequency points are nearly zero, and the amplitude values at the frequency points corresponding to the frequency value of the first audio signal can reflect the amplification capacity of the audio chip.
Further, referring to fig. 3, it can be determined whether the amplification capability of the audio chip meets the performance requirement, and the method thereof is as follows:
s134: and respectively determining whether the first amplitude value and the second amplitude value are within a preset amplitude threshold range.
The first amplitude value and the second amplitude value are respectively compared with a preset amplitude threshold range to determine whether the first amplitude value and the second amplitude value fall within the preset amplitude threshold range, wherein the preset amplitude threshold range is the amplification capacity of a chip required by artificial setting.
S135: if yes, the amplifying capability of the audio chip meets the performance requirement.
If so, the amplifying capability of the audio chip meets the performance requirement; and if any one of the first amplitude value and the second amplitude value does not meet the requirement, the amplification capacity of the audio chip does not meet the performance requirement.
Further, referring to fig. 4, the noise condition of the left channel and the right channel can also be tested by the following method:
s136: and acquiring a plurality of third amplitude values on other frequency points of the second audio signal.
And acquiring a plurality of third amplitude values on other frequency points of the second audio signal, namely acquiring a plurality of third amplitude values of the audio frequency domain information of the left channel and the right channel on other frequency points respectively, wherein the other frequency points are other frequency points except the specific frequency point, and because the amplitude values of the other frequency points are almost zero, the amplitude values of the other frequency points are too large, which indicates that the noise carried in the audio information sent by the corresponding left channel or right channel is large, and the noise does not meet the performance requirement of the audio chip.
S137: it is determined whether the plurality of third amplitude values is less than the second amplitude threshold.
And determining whether the plurality of third amplitude values are smaller than a second amplitude threshold value, wherein the second amplitude threshold value is a noise audio amplitude value which is measured through experiments and can be tolerated by human ears. Therefore, if the third amplitude values are determined to be smaller than the second amplitude threshold value, it is indicated that the noise of the audio chip is low, the corresponding left channel or right channel meets the performance requirement of the audio chip, and if the audio emitted by the left channel and the right channel meets the performance requirement of the audio chip, the audio chip meets the required performance requirement. And if the third amplitude value corresponding to any one of the left channel and the right channel exceeds the second amplitude threshold value, the audio chip does not meet the required performance requirement.
S138: if yes, the noise of the audio chip is low.
S14: it is determined whether a difference between the first amplitude value and the second amplitude value is less than a first amplitude threshold.
A difference between the first amplitude value and the second amplitude value is obtained and it is determined whether the difference is less than a first amplitude threshold. The difference value between the first amplitude value and the second amplitude value can be used as an index for judging the similarity between the left channel and the right channel of the audio chip, and if the amplification capacity difference between the left channel and the right channel of the audio chip is large, the use of a user is influenced.
Therefore, if the difference value is smaller than the first amplitude threshold value, the amplification capacities of the left channel and the right channel of the audio chip are similar, and the audio chip meets the performance requirement. If the difference value is larger than or equal to the first amplitude threshold value, the difference between the amplification capacities of the left channel and the right channel of the audio chip is larger, and the audio chip does not meet the performance requirement.
S15: if so, the performance of the left channel and the right channel of the audio chip meets the requirement.
The first amplitude value and the second amplitude value of the second audio signal output by the audio chip from the left channel and the right channel on the specific frequency point are obtained, whether the output capacity of the left channel and the output capacity of the right channel of the audio chip are close or not is further distinguished by determining whether the difference value of the first amplitude value and the second amplitude value is smaller than a first amplitude threshold value or not, therefore, the difference degree of the output capacity of the left channel and the output capacity of the right channel of the audio chip can be detected by the testing method of the audio chip, the audio chip with the performance meeting the requirements is further selected, and the quality of the earphone is guaranteed.
Based on this, the present application further provides a computer device 100, please refer to fig. 5, fig. 5 is a schematic structural diagram of a first embodiment of the computer device of the present application, in which the computer device 100 includes a processor 110 and a memory 120, the processor 110 is coupled to the memory 120, the memory 120 is used for storing a program, and the processor 110 is used for executing the program to implement the intra prediction method or the video coding method of any of the above embodiments.
The computer device 100 may be a codec. Processor 110 may also be referred to as a CPU (Central Processing Unit). The processor 110 may be an integrated circuit chip having signal processing capabilities. The processor 110 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The general purpose processor 110 may be a microprocessor or the processor may be any conventional processor or the like.
Based on this, the present application further provides a storage device 200, please refer to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of the storage device provided in the present application, in which the storage device 200 stores a program 210, and when the program 210 is executed, the intra prediction method or the video encoding method according to any of the above embodiments can be implemented.
The program 210 may be stored in the storage device 200 in the form of a software product, and includes several instructions to make a device or a processor execute all or part of the steps of the methods according to the embodiments of the present application.
The storage device 200 is a medium in computer memory for storing some discrete physical quantity. The storage device 200 having a storage function includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, which can store the code of the program 210.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (8)

1. A method for testing an audio chip is characterized by comprising the following steps:
inputting a first audio signal to an audio chip, wherein the first audio signal is a standard audio signal;
acquiring second audio signals which are respectively output from a left channel and a right channel after being processed by the audio chip;
respectively acquiring a first amplitude value and a second amplitude value of the second audio signal output by the left channel and the right channel at a specific frequency point, wherein the specific frequency point is the frequency value of the first audio signal; determining whether a difference between the first amplitude value and the second amplitude value is less than a first amplitude threshold;
and if so, the performance of the left sound channel and the right sound channel of the audio chip meets the requirement.
2. The method according to claim 1, wherein the obtaining the first amplitude value and the second amplitude value of the second audio signal output by the left channel and the right channel respectively at a specific frequency point comprises:
respectively determining whether the first amplitude value and the second amplitude value are within a preset amplitude threshold range;
and if so, the amplifying capability of the audio chip meets the performance requirement.
3. The method according to claim 1, wherein after obtaining the first amplitude value and the second amplitude value of the second audio signal output by the left channel and the right channel at a specific frequency point, the method further comprises:
acquiring a plurality of third amplitude values on other frequency points of the second audio signal, wherein the other frequency points are frequency points except the specific frequency point;
determining whether a plurality of the third amplitude values are less than a second amplitude threshold;
if so, the noise of the audio chip is low.
4. The method for testing according to claim 1, wherein after obtaining the second audio signals processed by the audio chip and respectively output from the left channel and the right channel, the method further comprises:
acquiring a plurality of data points of the second audio signal of the left channel and the right channel in time sequence;
fourier transforming the plurality of data points to obtain audio frequency domain information corresponding to a second audio signal of the left channel and the right channel.
5. The method according to claim 4, wherein the obtaining the first amplitude value and the second amplitude value of the second audio signal output by the left channel and the right channel at a specific frequency point comprises:
and acquiring a first amplitude value and a second amplitude value of the audio frequency domain information of the left channel and the right channel on a specific frequency point.
6. The testing method of claim 1, wherein the testing method simultaneously tests a plurality of audio chips provided on a board body to be tested, and wherein the inputting of the first audio signal to the audio chips comprises:
and respectively inputting a plurality of first audio signals from two opposite sides of the board body to be tested, wherein each first audio signal corresponds to one audio chip so as to simultaneously test the plurality of audio chips by using the first audio signals.
7. A storage device, characterized in that it stores a program which, when executed, is able to implement the method according to any one of claims 1 to 6.
8. A computer device, comprising a processor coupled to a memory and the memory for storing a program, and a memory for executing the program to implement the method of any of claims 1-6.
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