CN114900782A - Audio chip testing method, storage medium and computer equipment - Google Patents

Abstract

The application discloses a testing method of an audio chip, a storage medium 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

Test method for audio chip, storage medium and computer equipment

technical field

The present application relates to the technical field of audio chip testing, and in particular, to a testing method, storage medium and computer equipment for an audio chip.

Background technique

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 getting higher and higher. In order to meet the requirements of production testing of audio electronic products, it is necessary to realize refined and automated testing functions in the production process.

The audio chip has the output capability of the left and right channels. If the output capability of the left and right channels is too different, its performance does not meet the requirements, which will seriously affect the quality of the earphones. Therefore, an audio chip that can detect the left and right channel output capabilities is required. Methods.

SUMMARY OF THE INVENTION

The present application mainly provides an audio chip testing method, storage medium and computer equipment to solve the problem of how to detect the output capability of the left and right channels of the audio chip.

In order to solve the above technical problem, a technical solution adopted in the present application is to provide a testing method for an audio chip. The testing method of the audio chip comprises: inputting a first audio signal to the audio chip, wherein the first audio signal is a standard audio signal; acquiring the second audio signal output from the left channel and the right channel respectively after being processed by the audio chip; Obtain 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, wherein the specific frequency point is the frequency value of the first audio signal; determine the first amplitude value and the first amplitude value. Whether the difference between the two amplitude values is less than the first amplitude threshold; if so, the performance of the left channel and the right channel of the audio chip meets the requirements.

In order to solve the above technical problem, another technical solution adopted in this application is to provide a storage medium. The storage medium stores a program, and when the program is executed, the above-described method can be implemented.

In order to solve the above technical problem, another technical solution adopted in this application is to provide a computer device. The computer device includes a processor and a memory, the processor is coupled to the memory, the memory is used for storing a program, and the processor is used for executing the program to implement the method as described above.

The beneficial effects of the present application are: different from the situation in the prior art, the present application discloses a testing method for an audio chip, a storage medium and a computer device. By acquiring 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 at a specific frequency point, and by determining whether the difference between the first amplitude value and the second amplitude value is is less than the first amplitude threshold, so as to determine whether the output capabilities of the left and right channels of the audio chip are similar. Therefore, the audio chip testing method provided by this application can detect the difference between the output capabilities of the left and right channels of the audio chip, and then select the performance that meets the requirements. The audio chip to ensure the quality of the headset.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative work, wherein:

1 is a schematic flowchart of an embodiment of a testing method for an audio chip provided by the present application;

Fig. 2 is a detailed schematic flow chart of step S13 in the schematic flow chart of Fig. 1;

Fig. 3 is a kind of schematic flow chart after step S133 in the schematic flow chart of Fig. 2;

Fig. 4 is another schematic flow chart after step S133 in the schematic flow chart of Fig. 2;

5 is a schematic structural diagram of an embodiment of a computer device provided by the present application;

FIG. 6 is a schematic structural diagram of an embodiment of a storage medium provided by the present application.

Detailed ways

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. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in the embodiments of the present application are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first", "second", "third" may expressly or implicitly include at least one of that feature. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

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 present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to FIG. 1 , which is a schematic flowchart of a method for testing an audio chip provided by the present application. In this embodiment, the test method includes:

S11: Input the first audio signal to the audio chip.

A first audio signal is input to the audio chip, wherein the first audio signal is a standard audio signal. For example, the first audio signal is a 1KHz audio signal, and the first audio signal input to the audio chip is the same every time.

The audio chip can be an independent chip, or one of multiple audio chips in the board body to be tested. For example, the testing method of the present application can simultaneously test multiple audio chips disposed on the board to be tested.

Specifically, inputting the first audio signal to the audio chip specifically includes: inputting a plurality of first audio signals respectively from two opposite sides of the board to be tested, and each first audio signal corresponds to an audio chip, so as to utilize the first audio signal The signal tests multiple audio chips simultaneously.

Optionally, multiple first audio signals can also be input from one side of the test board, so as to use the first audio signals to test multiple audio chips simultaneously.

S12: Acquire the second audio signals respectively output from the left channel and the right channel after being processed by the audio chip.

Obtain the second audio signal output from the left channel and the right channel after being processed by the audio chip, wherein the audio chip includes a left channel and a right channel, so the audio chip receives the first audio signal, after processing, respectively The left channel and the right channel output respective second audio signals.

The second audio signal may be different due to the physical difference between the left channel and the right channel, which will result in a difference in the sound received by the human ear. If the difference is too large, the information heard by the human ear will be disturbed. For example, the sound from the left channel is loud and the sound from the right channel is low; or, the sound from the left channel carries more noise while the sound from the right channel is in good condition. These conditions will seriously affect the user's experience and damage the quality of the product. Therefore, it is necessary to test the ability of the left channel and the right channel of the audio chip to output audio, so as to eliminate the audio chips that do not meet the quality requirements.

S13: Obtain 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, respectively.

Obtain 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, wherein the specific frequency point is the frequency value of the first audio signal, and the first amplitude value is the left The amplitude peak value of the second audio signal corresponding to the 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 output as a sine wave signal, and the output sine wave signal needs to be converted into audio frequency domain information , and then collect the first amplitude value and the second amplitude value of the audio frequency domain information corresponding to the left channel and the right channel at a specific frequency point.

Specifically, referring to FIG. 2 , the method process for collecting the first amplitude value and the second amplitude value is as follows:

S131: Collect multiple data points of the second audio signal of the left channel and the right channel in time series.

Data points corresponding to multiple time points are sequentially collected from any time point of the second audio signal. The data point is the amplitude information of the corresponding time point on the second audio signal.

For example, 1024 data points can be collected continuously in one cycle, or 512 data points can be collected continuously in one cycle.

S132: Perform Fourier transform on the plurality of data points to obtain audio frequency domain information corresponding to the second audio signals of the left channel and the right channel.

Fourier transform is performed on a plurality of data points collected from the second audio signal output from the left channel to obtain corresponding audio frequency domain information. Fourier transform is performed on a plurality of data points collected from the second audio signal output from the right channel to obtain corresponding audio frequency domain information.

After obtaining the audio frequency domain information corresponding to the second audio signal of the left channel and the right channel, the amplitude value at the specific frequency point can be collected, and step S133 is executed.

S133: Acquire the first amplitude value and the second amplitude value of the audio frequency domain information of the left channel and the right channel at a specific frequency point.

Obtain the first amplitude value of the audio frequency domain information of the left channel at a specific frequency point, and obtain the second amplitude value of the audio frequency domain information of the right channel at a specific frequency point, that is, the first amplitude value and the second amplitude value The same specific frequency point corresponds to the left channel and the right channel respectively.

Wherein, the specific frequency point is the frequency value of the first audio signal. For example, if the first audio signal is 1 kHz, 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 point corresponding to the frequency value of the first audio signal, and the amplitude value of the other frequency points is close to zero, which is different from that of the first audio signal. The amplitude value on the frequency point corresponding to the frequency value of the signal can reflect the amplification capability of the audio chip.

Further, referring to Figure 3, it is also possible to determine whether the amplification capability of the audio chip meets the performance requirements, and the method is as follows:

S134: Determine whether the first amplitude value and the second amplitude value are within a preset amplitude threshold range, respectively.

That is, the first amplitude value and the second amplitude value are respectively compared with the preset amplitude threshold value range to determine whether they fall within the preset amplitude threshold value range, and the preset amplitude threshold value range is the amplification capability of the chip required for manual setting .

S135: If yes, the amplification capability of the audio chip meets the performance requirements.

If so, the amplification capability of the audio chip meets the performance requirements; if any one of the first amplitude value and the second amplitude value does not meet the requirements, the amplification capability of the audio chip does not meet the performance requirements.

Further, referring to Figure 4, the noise conditions of the left and right channels can also be tested, and the method is as follows:

S136: Acquire multiple third amplitude values at other frequency points of the second audio signal.

Acquiring multiple third amplitude values on other frequency points of the second audio signal, that is, acquiring multiple third amplitude values on other frequency points of the audio frequency domain information of the left channel and the right channel respectively, and the other frequency points are For other frequency points except a specific frequency point, since the amplitude value of other frequency points is close to zero, the amplitude value of other frequency points is too large, which means that the audio information sent by the corresponding left channel or right channel is in the audio information. It carries a lot of noise and does not meet the performance requirements of the audio chip.

S137: Determine whether the plurality of third amplitude values are smaller than the second amplitude threshold.

It is determined whether the plurality of third amplitude values are smaller than a second amplitude threshold value, and the second amplitude threshold value is a noise audio amplitude value tolerable to human ears measured through experiments. Therefore, it is determined that the plurality of third amplitude values are smaller than the second amplitude threshold, indicating that the noise of the audio chip is small, and the corresponding left channel or right channel meets the performance requirements of the audio chip. If the audio output meets the performance requirements of the audio chip, the audio chip meets the required performance requirements. If the third amplitude value corresponding to any one of the left channel and the right channel exceeds the second amplitude threshold, the audio chip does not meet the required performance requirements.

S138: If yes, it means that the noise of the audio chip is small.

S14: Determine whether the difference between the first amplitude value and the second amplitude value is smaller than the first amplitude threshold.

Obtain the difference between the first amplitude value and the second amplitude value, and determine whether the difference is smaller than the first amplitude threshold. The difference between the first amplitude value and the second amplitude value can be used as an indicator for judging the similarity of the left channel and the right channel of the audio chip. will affect the user's use.

Therefore, if the difference is smaller than the first amplitude threshold, the amplification capabilities of the left channel and the right channel of the audio chip are similar, and the audio chip meets the performance requirements. If the difference is greater than or equal to the first amplitude threshold, then the amplification capabilities of the left channel and the right channel of the audio chip are quite different, and the audio chip does not meet the performance requirements.

S15: If yes, the performance of the left channel and right channel of the audio chip meets the requirements.

By acquiring 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 at a specific frequency point, and by determining whether the difference between the first amplitude value and the second amplitude value is is less than the first amplitude threshold, so as to determine whether the output capabilities of the left and right channels of the audio chip are similar. Therefore, the audio chip testing method provided by this application can detect the difference between the output capabilities of the left and right channels of the audio chip, and then select the performance that meets the requirements. The audio chip to ensure the quality of the headset.

Based on this, the present application also provides a computer device 100. Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of the first embodiment of the computer device of the present application. In this embodiment, the computer device 100 includes a processor 110 and a memory 120. The processor 110 is coupled to the memory 120, and the memory 120 is used for storing a program, and the processor 110 is used for executing the program to implement the intra-frame prediction method or the video coding method in any of the foregoing embodiments.

Computer device 100 may be a codec. The processor 110 may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor 110 may be an integrated circuit chip with signal processing capability. Processor 110 may also be a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), 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 also provides a storage medium 200. Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of an embodiment of the storage medium provided by the present application. In this embodiment, the storage medium 200 stores a program 210, and the program 210 is When executed, the intra-frame prediction method or the video encoding method of any of the above-mentioned embodiments can be implemented.

Wherein, the program 210 may be stored in the above-mentioned storage medium 200 in the form of a software product, and includes several instructions to cause a device or processor to execute all or part of the steps of the methods of various embodiments of the present application.

Storage medium 200 is a medium used in computer memory to store some discrete physical quantity. The aforementioned storage medium 200 with a storage function includes: a USB flash drive, a removable hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. A medium that stores program 210 codes.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the device implementations described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other divisions. For example, multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this implementation manner.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.

The above are only the embodiments of the present application, and are not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims (7)

1. a test method of audio chip, is characterized in that, comprises: Input a first audio signal to the audio chip, wherein the first audio signal is a standard audio signal; Obtain the second audio signal output from the left channel and the right channel respectively 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, and determining the first amplitude value and the second amplitude value respectively Whether the amplitude value is within the preset amplitude threshold range; If so, the amplification capability of the audio chip meets the performance requirements; acquiring a plurality of third amplitude values on other frequency points of the second audio signal, wherein the other frequency points are frequency points other than the specific frequency point; determining whether a plurality of the third amplitude values are less than a second amplitude threshold; If so, it means that the noise of the audio chip is small. 2 . The testing method according to claim 1 , wherein the specific frequency point is a frequency value of the first audio signal. 3 . 3. testing method according to claim 1, is characterized in that, after described obtaining the second audio signal output from left channel and right channel respectively after described audio chip processing, also comprises: Acquiring a plurality of data points of the second audio signal of the left channel and the right channel in time series; Fourier transform is performed on the plurality of data points to obtain audio frequency domain information corresponding to the second audio signals of the left channel and the right channel. 4. testing method according to claim 3, is characterized in that, described obtaining the first amplitude value of the described second audio signal of described left channel and described right channel output respectively on specific frequency point and Second magnitude value, including: Acquire a first amplitude value and a second amplitude value of the audio frequency domain information of the left channel and the right channel at a specific frequency point. 5. The test method according to claim 1, wherein the test method simultaneously tests a plurality of audio chips arranged on the board to be tested, wherein the inputting the first audio signal to the audio chip comprises: A plurality of first audio signals are respectively input from two opposite sides of the board to be tested, and each of the first audio signals corresponds to one of the audio chips, so as to use the first audio signals for the plurality of audio signals The chips are tested at the same time. 6. A storage medium, characterized in that the storage medium stores a program, and when the program is executed, the method according to any one of claims 1-5 can be implemented. 7. A computer device, characterized in that the computer device comprises a processor and a memory, the processor is coupled to the memory, the memory is used to store a program, and the processor is used to execute the program to achieve The method of any one of claims 1-5.

Images