TWI383693B - Testing device capable of testing audio formats supported by an audio player device and method thereof - Google Patents

Description

Test device and method for audio file format supported by audio player

The present invention relates to a test apparatus and method, and more particularly to an apparatus and method for testing an audio format to which an audio file supported by an audio player belongs.

With the development of science and technology and the upgrading of people's entertainment requirements, the development of audio players is getting faster and faster. Manufacturers in order to gain advantages in the fierce competition, attract more customers, develop and produce audio supported by audio players. There are more and more file formats. The audio files of each format, such as the MP3 format, vary in bit rate and sampling rate, and different MP3 products have different support ranges for bit rate and sampling rate. Of course, the range of support is more. The wider the better. For example, an MP3 player produced by a certain manufacturer supports MP3 format audio files with a bit rate of 320Kpbs and a sampling rate of 16KH to 48KHz. In order to ensure that each MP3 player in the factory can play the audio files of the above MP3 format normally, the production is performed. Manufacturers must test the audio files of the above MP3 format one by one. The existing test method is manual test, which causes some troubles for the manufacturer: 1. Each audio file format supported by each audio player requires manual test, which increases labor cost and causes capacity bottleneck; To ensure the quality of the test, the device in question may pass the quality inspection due to human disturbance or difficulty in judging human error.

It is an object of the present invention to provide a test apparatus and method for an audio file format supported by an audio player to solve the artificial detection sound in the prior art. There is a problem with the audio file format supported by the frequency player.

The audio file format test device supported by the audio player includes: an audio format conversion module for converting each sound file used for testing into each audio file; and a recording module for playing an audio file Each audio file played by the device is recorded as a sound file; an identifier forming module for processing each sound file for testing to generate an initial identifier, and for performing each recorded sound file Processing to obtain an identifier of each recorded sound file; a memory for storing each audio file converted by each sound file for testing and recording an initial identifier of each sound file for testing a correspondence table with an audio file format relationship of each audio file converted by each sound file for testing; and a comparison module for comparing identifiers of each recorded sound file with the corresponding relationship Whether the initial identifiers in the table are the same, if an identifier is the same as one of the initial identifiers, according to the correspondence between the initial identifier and the audio file format, The audio player supports the audio file formats.

The audio file format test method supported by the audio player includes the following steps: outputting each audio file to an audio player on a test device, each audio file having an initial identifier corresponding to the audio format to which each audio file belongs. Receiving, by the test device, the sound signal output by the audio player when playing each audio file; recording, on the test device, the sound signal output by the audio player when each audio file is played as each sound file; Processing each recorded sound file to obtain an identifier of each recorded sound file; comparing the identifier of each recorded sound file with the initial identifier of each audio file, according to comparison The result determines the audio format supported by the audio player; and outputs the audio format supported by the audio player.

The test device and method provided by the invention automatically test the audio file format supported by the audio player, reduce the labor cost, solve the problem of the production bottleneck caused by the manual detection, and effectively solve the problem that may be caused by human negligence or the like. The problematic device passed the quality check problem.

FIG. 1 is a schematic diagram of a hardware architecture of an audio player connected to a test device according to an embodiment of the present invention.

The audio player 10 includes an audio memory 101, an audio playback module 102, an audio file input port 103, and an audio signal output port 104. The test device 20 includes a memory 201, a recording module 202, an audio file output port 207, and an audio signal input port 208. The test device 20 can be a computer. The audio file input port 103 is connected to the audio file output port 207, and the audio signal output port 104 is connected to the audio signal input port 208. The audio file input port 103 and the audio file output port 207 can be a data transmission interface such as a USB. The memory 201 is configured to store an audio file converted by a sound file for testing (hereinafter referred to as a first sound file) and an initial identifier recorded with the first sound file and audio converted by the first sound file Correspondence table of the audio file format relationship of the file. The audio file refers to a file obtained by encoding the first sound file by using an encoding technique such as MP3, WMA, and the like. The format of the audio file is an encoding format such as MP3, WMA, and the like. The audio memory 101 is configured to store an audio file transmitted by the audio file output port 207 of the test device 20, and transmit the audio file to the sound The frequency playing module 102 plays. When the audio play module 102 plays the audio file, the audio signal is output by the audio signal output 104, and is input by the audio signal input port 208 via the conductive line, and the recording module 202 records the received sound signal to generate A sound file (hereinafter referred to as the second sound file). When the audio playing module 102 sequentially plays a plurality of audio files, the recording module 202 can record each audio file as a second sound file according to the length of time each audio file is played. For example, the plurality of first sound files set for testing have a time length of 4 seconds, and the plurality of first sound files are converted into a plurality of audio files, and the plurality of audio files also have a time length of 4 seconds. In this way, the recording module 202 detects that the audio file is started when the audio playing module 102 starts playing the audio file, and stops recording when the recording time is 4 seconds, and saves the recorded sound signal. As a second sound file, until the recording module 202 detects that the audio playing module 102 starts playing the audio file, the received sound signal is recorded again.

The test device 20 further includes an identifier forming module 203, a matching module 204, an output module 205, and an audio format conversion module 206. The identifier forming module 203 is configured to perform spectrum analysis on the first sound file to obtain frequency information of the first sound file, and initially identify the first sound file according to the frequency information, and the different first sound files have The identifier forming module 203 is further configured to analyze the second sound file recorded by the recording module 202 to obtain an identifier of the second sound file. If the recording module 202 records a plurality of different second sound files, the identifier forming module 203 pairs the plurality of different The second sound file is analyzed to obtain a plurality of identifiers of the plurality of different second sound files. The comparison module 204 is configured to receive an identifier of the second sound file obtained by the identifier forming module 203, and obtain a correspondence table between the initial identifier and the audio file format from the memory 201, and compare the Whether the identifier of the second sound file is the same as the initial identifier in the correspondence table, and if the identifier of the second sound file is the same as one of the initial identifiers, according to the correspondence between the initial identifier and the audio file format, The audio file format supported by the audio player 10. If the comparison module 204 receives the plurality of identifiers of the plurality of different second sound files obtained by the identifier forming module 203, the comparison module 204 compares each identifier with an initial in the correspondence table. Whether the identifiers are the same or not, if an identifier is identical to one of the initial identifiers, the audio file format supported by the audio player 10 is obtained according to the correspondence between the initial identifier and the audio file format. The output module 205 is configured to output an audio file format supported by the audio player 10 for the tester to know the audio file format supported by the audio player 10. The audio format conversion module 206 is configured to convert the first sound file into an audio file, and the first sound file having different initial identifiers is converted into an audio file of a different format, or converted to the same format but with a bit rate and a sampling rate. Wait for different audio files.

FIG. 2 is a flowchart of a method for testing an audio file format supported by an audio player according to an embodiment of the present invention.

In step S201, an audio file having an initial identifier is created on the test device 20, and a correspondence table of the audio file and its initial identifier and the audio file format is stored in the memory 201. The production process is shown in Figure 3.

In step S202, the audio file output port 207 is connected to the audio file input port 103, and the audio signal output port 104 is connected to the audio signal input port 208.

In step S203, an audio file stored in the memory 201 is transmitted from the audio file output port 207 to the audio memory 101, and the audio file 101 transmits the audio file to the audio play module 102 for playing. And the sound signal output 埠 104 outputs an audio signal.

In step S204, the audio signal input port 208 receives the audio signal output by the audio signal output port 104, and transmits the audio signal to the recording module 202 for recording. The recording module 202 records the audio signal as a second sound file.

In step S205, the identifier forming module 203 receives the second sound file recorded by the recording module 202 and processes it to obtain an identifier of the second sound file. In one embodiment, the identifier forming module 203 performs a Fourier Transform Algorithm (FTA) operation or a Fast Fourier Transform Algorithm (FFTA) operation on the second sound file. Obtaining the spectrum information of the second sound file, and obtaining an identifier of the second sound file according to the method for initially identifying the first sound file in the production process.

In step S206, the comparison module 204 receives the identifier of the second sound file, and obtains a correspondence table between the initial identifier and the audio file format from the memory 201, and compares the identifier of the second sound file. Whether the initial identifier in the correspondence table is the same, if the second sound file The identifier is the same as one of the initial identifiers, and the audio file format supported by the audio player 10 is obtained according to the correspondence between the initial identifier and the audio file format. If the identifier of the second sound file is different from all the initial identifiers, the comparison module 204 determines that the audio player 10 does not support the audio format to which the currently played audio file belongs. When the audio player 10 supports the audio file format, step S207 is performed, otherwise the flow ends.

In step S207, the output module 205 outputs the audio file format supported by the audio player 10 obtained by the comparison module 204 on a display screen (not shown) of the test device 20 for the tester to know. The audio file format supported by the audio player 10. In other embodiments, the output module 205 can also output the audio file format supported by the audio player 10 in the form of sound. In the above embodiment, the user may also create a plurality of audio files with initial identifiers on the test device 20, and the multiple audio files may have different audio formats, or may have the same format but bit rate and sampling rate. Wait for different audio files. The test device 20 sequentially outputs the plurality of audio files to the audio player 10 for playback, and records each audio file as a second sound file while the audio player 10 is playing. After all the sound files are recorded, the identifier forming module 203 analyzes the recorded plurality of second sound files to obtain a plurality of identifiers of the plurality of second sound files. The comparison module 204 compares whether each identifier is the same as the initial identifier stored in the initial identifier and the audio file format correspondence table. If an identifier is the same as one of the initial identifiers, the initial identifier is used. The correspondence of the audio file format, and the sound supported by the audio player 10 is obtained. Frequency file format.

As shown in FIG. 3, a flowchart of a method for creating an audio file having an initial identifier in accordance with an embodiment of the present invention.

In step S301, the identifier forming module 203 performs initial identification on a first sound file. In one embodiment, the identifier forming module 203 performs spectrum analysis on the first sound file to obtain frequency information of the sound file, and initially identifies the first sound file according to the obtained frequency information. An implementation of this initial identifier is shown in Table 1:

For example, if the length of the first sound file is 4 seconds, the frequency information of the first sound file obtained by performing spectrum analysis on the first sound file is as follows: the frequency of each 0.8 seconds in each of 4 seconds is 1Khz, 1.5. Khz, 1Khz, 1.5Khz and 1Khz. According to the correspondence between the frequency and the identifier in the correspondence table of the first table, the initial identifier of the first sound file is 12121. Of course, in other embodiments, different identification methods may be used.

If the audio player 10 to be tested supports multiple audio file formats, the first sound files having the same time length but different spectrums may be separately The initial logo.

In step S302, the audio format conversion module 206 converts the first sound file having the initial identifier into an audio file, and the first sound file having different initial identifiers is converted into an audio file of a different format, or converted into the same format. But different audio files such as bit rate and sampling rate. The audio file refers to a file obtained by encoding the first sound file by using an encoding technology such as MP3, WMA, etc., and the format of the audio file is an encoding format such as MP3, WMA, and the like. A conversion relationship in this embodiment is shown in Table 2:

In step S303, the memory 201 stores an audio file converted by the first sound file having the initial identifier and a correspondence table between the initial identifier and the audio file format.

10‧‧‧Audio player

101‧‧‧Audio Memory

102‧‧‧Audio playback module

103‧‧‧Audio file input埠

104‧‧‧Sound signal output埠

20‧‧‧Test equipment

201‧‧‧ memory

202‧‧‧Recording module

203‧‧‧Identifier forming module

204‧‧‧ alignment module

205‧‧‧Output module

206‧‧‧Audio format conversion module

207‧‧‧Audio file output埠

208‧‧‧Sound signal input埠

FIG. 1 is a schematic diagram of a hardware architecture of an audio player connected to a test device according to an embodiment of the present invention.

2 is a flow chart of a test method for an audio file format supported by an audio player according to an embodiment of the present invention.

3 is a flow chart of a method of making an audio file with an initial identifier in accordance with an embodiment of the present invention.

10‧‧‧Audio player

101‧‧‧Audio Memory

102‧‧‧Audio playback module

103‧‧‧Audio file input埠

104‧‧‧Sound signal output埠

20‧‧‧Test equipment

201‧‧‧ memory

202‧‧‧Recording module

203‧‧‧Identifier forming module

204‧‧‧ alignment module

205‧‧‧Output module

206‧‧‧Audio format conversion module

207‧‧‧Audio file output埠

208‧‧‧Sound signal input埠

Claims (7)

A test device for an audio file format supported by an audio player, the test device comprising: an audio format conversion module for converting each sound file used for testing into each audio file; a recording module for Recording each audio file played by an audio player as a sound file; an identifier forming module for performing spectrum analysis on each sound file used for testing, and determining each frequency according to the correspondence between the frequency and the identification number An initial identifier of a sound file is further used for performing spectrum analysis on each recorded sound file, and determining an identifier of each recorded sound file according to a correspondence relationship between the frequency and the identification number; a memory for storing Each audio file and record for each sound file conversion for testing has an initial identifier for each sound file used for testing and an audio file format for each audio file converted by each sound file for testing a correspondence table of relationships; and a comparison module for comparing the identifier of each recorded sound file with the initial in the correspondence table Identifier is identical, and wherein if an identifier of an initial identifier according to the identifier correspondence between the initial audio file format, the audio player to obtain a supported audio file formats. The test device of the audio file format supported by the audio player described in claim 1, wherein each sound file used for testing is a sound file of the same length of time, converted by each sound file for testing Each audio file is an audio file of the same length. Audio file supported by the audio player as described in item 2 of the patent application scope The test device is configured to detect each audio file according to the length of time of each audio file when the audio player starts to play each audio file. The test device of the audio file format supported by the audio player according to claim 1, wherein the identifier forming module performs a Fourier transform algorithm on each recorded sound file to obtain the frequency of the recorded sound file. News. The test device of the audio file format supported by the audio player of claim 1, wherein the test device further comprises an output module for outputting an audio file format supported by the audio player. A method for testing an audio file format supported by an audio player, the method comprising the steps of: performing spectrum analysis on each sound file for testing on a test device and initializing according to a spectrum of each sound file used for testing Identifying an initial identifier; converting each sound file for testing with an initial identifier into each audio file; and storing each audio file and recording an initial identifier of each sound file for testing and a correspondence table of audio file format relationships of each audio file converted for each of the tested sound files; outputting each audio file to an audio player on the test device, each audio file having an initial identifier Corresponding to an audio format to which each audio file belongs; using the test device to receive an audio signal output by the audio player when playing each audio file; and playing the audio player on the test device to play each audio file The output audio signal is recorded as each sound file; the frequency information of each recorded sound file is obtained, and the identifier of each recorded sound file is determined according to the correspondence between the frequency and the identification number; and each recorded sound file is compared And an initial identifier of each audio file, determining an audio format supported by the audio player according to the correspondence between the initial identifier and the audio file format; and outputting an audio format supported by the audio player. The audio player supports the audio file format test method according to claim 6, wherein the step of obtaining the frequency information of each recorded sound file is: performing a Fourier transform algorithm on each recorded sound file. The operation obtains the frequency information of each recorded sound file.