JP4633981B2 - Voice communication test result determination method and apparatus, and storage medium storing voice communication test result determination program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a voice communication test result determination method and apparatus and a storage medium storing a voice communication test result determination program, and in particular, confirms an operation for switching a communication mode (data communication mode / voice communication mode) of a mobile phone. The present invention relates to a voice communication test result determination method and apparatus for automatic verification, and a storage medium storing a voice communication test result determination program.
[0002]
[Prior art]
FIG. 7 is a diagram for explaining a conventional test method.
[0003]
Test that confirms that the communication mode of the mobile phone can be switched normally from “Data communication mode” to “Voice communication mode” with the data communication card (hereinafter referred to as PC card) or PC connected to the mobile phone. As shown in FIG. 7, in the conventional test method, two persons each have one mobile phone, and after switching the communication mode of the mobile phone from the data communication mode to the voice communication mode, the mobile phone on the transmission side The person A having the voice utters, and the person B having the mobile phone on the receiving side listens to the uttered voice. If the voice has arrived normally, it is confirmed that the switching of the communication mode is normal.
[0004]
[Problems to be solved by the invention]
However, the conventional test method for confirming that the communication mode of the mobile phone can be normally switched from the data communication mode to the voice communication mode with the mobile phone, the PC card, and the PC connected is the mobile phone, the PC card, It is necessary to perform as many combinations of the types of PC and OS, and in the manual test as described above, a considerable number of man-hours are required for the test operation.
[0005]
In addition, there is a problem that the test result must be manually determined in spite of being required to keep the quality of the operation confirmation constant.
[0006]
The present invention has been made in view of the above points, and a speech communication test result determination method and apparatus capable of reducing the test time for operation confirmation, uniforming test quality, and improving the completeness of the confirmation device, and An object is to provide a storage medium storing a voice communication test result determination program.
[0007]
[Means for Solving the Problems]
The present invention (Claim 1) is a speech communication test result determination method in an apparatus for performing a speech communication test for confirming that a mobile terminal including a mobile phone or a PHS can be normally switched from a data communication mode to a voice communication mode . There ,
The device that conducts the voice communication test
As a result of performing the voice communication test, a first test result file that samples the background noise without a voice signal and holds the digitized data;
As a result of performing the voice communication test, a second test result file that samples a voice signal and a signal including noise and holds numerical data;
A first average value calculating means, a threshold setting means, a first determining means, a second average value calculating means, a second determining means;
The first average value calculating means obtains the total sum of data in the first test result file, and obtains the first average value by dividing the sum by the number of data,
The threshold determination means sets a value larger than the first average value as the threshold,
When the first determination means does not satisfy the predetermined first condition among the data in the second test result file that does not satisfy the predetermined first condition, the voice signal is not received, so the voice is not communicated. It was determined that
The second average value calculating means, among the data of the second test result file, if the data exceeding the threshold is met the first condition, the total sum of data that exceeds the threshold value, the sum Find the second average value by dividing by the number of data that exceeds the threshold,
The second determination means, a second average value from the data of the second test results file, if divided by the first average value, satisfies a predetermined second condition, the voice signal It is determined that the voice has been received and communicated.
[0008]
The present invention (Claim 2) is a voice communication test result determination device for performing a voice communication test for confirming that a mobile terminal including a mobile phone or a PHS can be normally switched from a data communication mode to a voice communication mode . ,
As a result of performing the voice communication test, a first test result file that samples the background noise without a voice signal and holds the digitized data;
As a result of performing the voice communication test, a second test result file that samples a voice signal and a signal including noise and holds numerical data;
A first average value calculating means for calculating a total sum of data in the first test result file and calculating a first average value by dividing the total by the number of data;
Threshold determination means for setting a value larger than the first average value as a threshold;
If the data in the second test result file that exceeds the threshold does not satisfy the predetermined first condition, it is determined that the audio signal has not been communicated because the audio signal has not been received. A determination means;
When the data exceeding the threshold satisfies the first condition among the data of the second test result file , the sum total of the data exceeding the threshold is obtained, and the total number of data exceeding the threshold is calculated. A second average value calculating means for obtaining a second average value by dividing by;
When a value obtained by dividing the second average value from the data of the second test result file by the first average value satisfies the predetermined second condition, an audio signal is received and the audio is communicated. a second determination means determines that the.
[0009]
The present invention (Claim 3) is a storage medium storing a voice communication test result determination program for causing a computer to function as each means constituting the voice communication test result determination apparatus according to claim 2.
[0010]
As described above, in the present invention, a voice signal received by a mobile phone on the receiving side is divided by the voice receiving side client terminal into a case of only noise that does not transmit a voice signal from the mobile phone and a case of transmitting a voice signal. Each file is recorded, and the recorded file (test result file) is compared at the server, and the file (second test file) that receives the audio signal for the data of the file (first test result file) in which only the noise is recorded If the test result file) data satisfies a certain condition, it is determined that “there is an audio signal” and it can be confirmed that the device under test operates normally.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
First, a system for conducting a voice communication test will be described.
[0012]
FIG. 1 shows a system configuration according to an embodiment of the present invention. In the system shown in the figure, the client terminal 100A on the voice transmitting side and the client terminal 100B on the voice receiving side to be tested are connected to the server 200, and each of the client terminals 100A and 100B has the PC cards 120A and B inside. It is mounted and connected to the mobile phones 110A and 110B, respectively.
[0013]
The server 200 controls the client terminals 100A and 100B and determines the test result.
[0014]
Next, an outline of the operation in the above configuration will be described.
[0015]
FIG. 2 is a sequence chart of the voice communication test process according to the embodiment of the present invention.
[0016]
The voice communication test is to confirm the operation of switching the communication mode of the mobile phone, that is, switching from the data communication mode to the voice communication mode. The voice communication test includes a test preparation stage (hereinafter referred to as (1) (2)), a test implementation stage (hereinafter referred to as (3) (4) (5) (6) (7)), and a test result determination stage (hereinafter referred to as ▲ 8) (9)). This will be described in order below.
[0017]
Note that the numbers in circles in FIG. 2 correspond to the numbers in circles in the following description.
[0018]
(1) Communication mode switching instruction:
First, in a state where the mobile phones 110A and 110B are in the data communication mode, the server 200 changes the communication mode of the mobile phone from “data communication mode” to “voice communication” with respect to the voice transmitting client terminal 100A and the voice receiving client 100B. Instruct to switch to “mode”.
[0019]
The voice transmission side client terminal 100A and the voice reception side client terminal 100B that have received an instruction from the server 200 change the communication mode of the mobile phones 110A, B connected via the PC cards 120A, B from the “data communication mode”. Instruct to switch to “voice communication mode”. When the switching can be normally performed, the voice transmitting client terminal 100A and the voice receiving client terminal 100B notify the server 200 that the switching is completed.
[0020]
(2) Transfer of audio playback WAV file:
The server 200 transfers a WAV format file (hereinafter, referred to as an audio reproduction WAV file) in which the test audio is recorded to the audio transmission side client terminal 100A. The audio playback WAV file replaces the human voice in the description of the prior art. In the test, the audio transmitting client terminal 100A and the audio receiving client terminal 100B are connected to the MIC / PHONE terminals of the mobile phones 110A and 110B, and the audio reproduction WAV file is converted into an audio signal by the audio transmitting client 100A. The data is sent to the MIC / PHONE terminal of the mobile phone 110A and transmitted.
[0021]
Note that the audio playback WAV file is used to confirm that audio is normally communicated, and the file format is WAV file as long as the OS of the audio transmission side client terminal 100A can be played back. The MP3 file or the like may be used.
[0022]
After completing the transfer of the audio reproduction WAV file, the audio transmitting client terminal 100A notifies the server 200 that the transfer of the file has been completed.
[0023]
(3) Recording start instruction:
The server 200 instructs the audio receiving side client terminal 100B to start recording.
[0024]
The voice receiving side client terminal 100B that has received the recording start instruction from the server 200 is in a state where the mobile phone 110B is simply connected, that is, in a state where no voice signal is transmitted and only noise is received (hereinafter, referred to as “noise”). Start recording ("First").
[0025]
(4) End of the first recording:
The voice receiving client terminal 100B notifies the server 200 of the end of recording after the end of recording for the first time designated by the server 200.
[0026]
The voice receiving client terminal 100B starts recording (hereinafter referred to as “second time”) immediately after the end of the first recording. The reason for starting the second recording immediately after the end of the first recording is to reduce the influence of noise over time and to improve the test quality.
[0027]
(5) Audio playback instruction:
The server 200 receives the notification of the end of the first recording from the audio receiving client 100B, and instructs the audio transmitting client terminal 100A to perform audio reproduction.
[0028]
Upon receiving the voice transmission instruction from the server 200, the voice transmission side client terminal 100A plays back the voice playback WAV file and starts sending voice signals to the mobile phone 110A.
[0029]
(6) End of audio playback:
The audio transmission side client terminal 100A continues to transmit the audio signal until the reproduction of the audio reproduction WAV file is completed, and notifies the server 200 of the completion of the audio reproduction after the audio reproduction is completed.
[0030]
▲ 7 ▼ Recording end instruction:
The server 200 receives the audio reproduction end notification from the audio transmission side client terminal 100A, and instructs the audio reception side client terminal 100B to end recording. The voice receiving side client terminal 100B receives the recording end instruction from the server 200 and ends the second recording.
[0031]
(8) Test result file transfer / (9) Test result judgment:
The voice receiving side client terminal 100B transfers the two test result files recorded at the first time and the second time to the server 200 after the end of recording.
[0032]
The server 200 determines whether an audio signal is included in the second test result file from the data of the first and second test result files. A method for determining the test result will be described later. Here, if it is determined that the audio signal is included, it means that the device under test operates normally. If it is not determined that the audio signal is included, the device under test operates normally. I didn't.
[0033]
In the above, the reason for recording twice is that the background noise (the internal noise of the mobile device + the internal noise of the PC to be recorded + the telephone) due to the difference in call quality that changes with the machine environment and every call by the first recording This is because the average level of fluctuations due to transmission line noise or the like is measured and used as a reference value for a state without sound.
[0034]
Next, the test result determination process in the server 200 in the above item (9) will be described.
[0035]
First, the configuration of the server 200 will be described.
[0036]
FIG. 3 shows the configuration of the server according to the embodiment of the present invention.
[0037]
The server 200 shown in the figure includes a system control unit 210, an audio reproduction WAV file 220, a test result determination unit 230, a first test result file 240, and a second test result file 250.
[0038]
The system control unit 210 transfers the audio reproduction WAV file 220 to the audio transmission-side client terminal 100A, sends various instructions, receives notifications from each client terminal 100, receives the test result file 240, 250 is received.
[0039]
The test result determination unit 230 reads the data of the two test result files and determines the test result.
[0040]
FIG. 4 is a diagram for explaining a first test result file in one embodiment of the present invention, and FIG. 5 is a diagram for explaining a second test result file in one embodiment of the present invention. FIG.
[0041]
The first test result file 240 is a noise-only WAV file without an audio signal transferred from the audio receiving side client terminal 100B to the server 200 as shown in FIG. The second test result file 250 is a WAV file including a sound signal and noise transferred from the sound receiving client terminal 100B to the server 200 as shown in FIG.
[0042]
The test result files of the first test result file 240 and the second test result file 250 are files in which values (hereinafter referred to as elements) obtained by pulse code modulation (hereinafter referred to as PCM) of audio signals are listed. These correspond to the values of ax and by in FIGS. PCM is a method of extracting a voice signal level of a target analog voice signal at a rate of n times per second (referred to as sampling) and digitizing it (referred to as quantization). The sampling value is set to 8 kHz or more in consideration of the characteristics of the telephone transmission path.
[0043]
Next, a method for determining the presence / absence of audio signals from two WAV files in the above configuration will be described.
[0044]
In the test result determination unit 230, the sum total of the elements of the first test result file 240 is obtained, and the average value is calculated by dividing the obtained sum by the number of elements. A value larger than the calculated average value is set as a threshold value. If the elements of the second test result file 250 that exceed the threshold satisfy a certain condition (first condition), the sum of the elements exceeding the threshold is obtained, and the obtained sum exceeds the threshold. The average value is calculated by dividing by the number of elements.
[0045]
When the calculated average value divided by the average value calculated from the elements of the first test result file 240 satisfies a certain condition (second condition), it is determined that “there is an audio signal”. .
[0046]
The first condition is that the ratio of the number of elements exceeding the threshold in the second test result file 250 to the total number of elements exceeds a certain value. The recording time of the audio signal may be short due to a difference in timing between audio reproduction and recording, but if it exceeds a certain ratio, it is determined that the audio signal may be included. This method can be effectively applied to intermittent voices such as human voices. The second condition is that the average value calculated from elements exceeding the threshold value of the second test result file 250 exceeds a certain ratio with respect to the average value calculated from each element of the first test result file 240. That is. As a result, it is possible to determine the presence or absence of speech even when the temporal variation of noise is taken into consideration.
[0047]
Hereinafter, a method for determining the presence / absence of an audio signal from two test result files will be described in detail.
[0048]
FIG. 6 is a flowchart of the test result determination in one embodiment of the present invention.
[0049]
Step 101) The average value of each element of noise included in the first test result file 240 is calculated. Since the first test result file 240 records only noise, each element changes with time depending on the presence or absence of noise (FIGS. 4, a5, and a6). Further, since the noise is alternating current, there is a negative value (FIG. 4, a7).
[0050]
First, in order to obtain the average value of each element of the first test result file 240, the sum of absolute values of each element (negative values are converted to plus) is obtained. By dividing the sum by the total number of elements in the first test result file 240, an average value (Σ | ax | / x, the value of each element: ax, the number of elements: x)
And a value larger than the calculated average value is set as a threshold value. The threshold value is a value serving as a reference for extracting elements of the second test result file 250 in step 102 described later. Here, the value larger than the average value is set because the noise varies with time (the noise included in the second test result file 250 is higher than the noise of the first test result file 240). (There is a possibility that numerical elements may gather). The value larger than the average value is a value obtained by adding a constant (α) to the average value, or a value obtained by rounding up the decimal value of the average value (for example, 11 or 10.3 for 10.25) ). Note that a dynamic ratio may be set in consideration of the fact that the scale of the vertical axis is not a constant interval.
[0051]
Step 102) Next, a portion of the audio signal is extracted from each element of the second test result file 250. From the absolute value of each element of the second test result file 250, an element having a value larger than the threshold value obtained in step 101 is extracted and set as cz. In FIG. 5, since b2 is equal to or greater than the threshold value, it is an extraction target. In addition, each element value of b4 and b8 is a negative value, but if it takes an absolute value, it becomes equal to or more than a threshold value and becomes an extraction target.
[0052]
(Z / y × 100, total number of elements in second test result file: y, number of elements exceeding threshold: z)
Is equal to or higher than a certain ratio (β%), it can be determined that there is a possibility that the second test result file 250 includes an audio signal, and the process proceeds to the next step 103.
[0053]
If the ratio of each element of the second test result file 250 that exceeds the threshold is not equal to or greater than a certain ratio (β%), the process proceeds to step 106.
[0054]
The certain ratio (β%) can be changed depending on the type of mobile terminal, PC card, client terminal, and OS, and the same ratio (for example, 10%) may be applied in all tests.
[0055]
Step 103) Next, an average value is calculated for the element (cz) of the second test result file 250 extracted in Step 102 described above. The average value is obtained by calculating the sum of absolute values of elements exceeding the threshold value, and dividing the total by the number of elements exceeding the threshold value (Σ | cz | / z, the value of each element exceeding the threshold value: cz) , The number of elements exceeding the threshold: z) can be calculated.
[0056]
Step 104) The average value of the elements exceeding the threshold among the elements of the second test result file 250 with respect to the average value of the elements of the first test result file 240 calculated from the elements of the first test result file 240 Ratio ((Σ | cz | / z) / (Σ | ax | / x))
And determine whether the ratio of the average value exceeds a certain ratio (γ times).
Step 105) If the ratio of the average values exceeds a certain ratio (γ times), it can be determined that the second test result file 250 includes an audio signal.
[0057]
Step 106) When the ratio of the average value does not exceed a certain ratio (γ times), and in Step 102, the ratio exceeding the threshold value of each element of the second test result file 250 is a certain ratio ( If it is less than (β%), it can be determined that the second test result file 250 contains no audio signal.
[0058]
Here, the constant ratio (γ times) means that the ratio obtained from the average value can be changed depending on the type of mobile terminal, PC card, client terminal, and OS, and the same ratio ( For example, 2.5 times) may be applied.
[0059]
In the above embodiment, the description is based on the configuration of the server 200 shown in FIG. 3, but the server components shown in FIG. 3 are constructed as a program and connected to a computer used as a server. The present invention can be easily realized by storing it in a portable storage medium such as a hard disk device, a floppy disk, or a CD-ROM, and installing it when carrying out the present invention.
[0060]
The present invention is not limited to the above-described embodiments, and various modifications and applications can be made within the scope of the claims.
[0061]
【The invention's effect】
Conventionally, a test for confirming that the communication mode of the mobile phone can be normally switched from the data communication mode to the voice communication mode with the mobile phone, the PC card, and the PC connected is performed using two mobile phones. Switching from a data signal to a voice signal is manually performed by human voice, and requires a considerable amount of man-hours. As described above, according to the present invention, a voice signal is transmitted from a mobile phone in a voice communication test. Record the audio signal received by the mobile phone on the receiving side separately at the client terminal on the audio receiving side, and compare the data of the recorded file at the server. If the data of the file that received the audio signal meets certain conditions with respect to the data of the file that recorded only noise, it is determined that there is an audio signal, and the test target Vessel is that as can be confirmed that the operation is successful.
[0062]
As a result, it is possible to automatically perform a voice communication test that can be confirmed only manually, and in a voice communication test that requires the number of combinations according to the number of types of mobile phones, PC cards, PCs, and OSs. Therefore, it is possible to shorten the test time for the operation check, make the test quality uniform, and improve the completeness of the check device.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram according to an embodiment of the present invention.
FIG. 2 is a sequence chart of a voice communication test process according to an embodiment of the present invention.
FIG. 3 is a configuration diagram of a server according to an embodiment of the present invention.
FIG. 4 is a diagram for explaining a first test result file according to an embodiment of the present invention.
FIG. 5 is a diagram for explaining a second test result file according to the embodiment of the present invention.
FIG. 6 is a flowchart of test result determination in one embodiment of the present invention.
FIG. 7 is a diagram for explaining a conventional test method.
[Explanation of symbols]
100 Client terminal 110 Mobile phone 120 PC card 200 Server 210 System control unit 220 Audio playback WAV file 230 Test result determination unit 240 First test result file 250 Second test result file

Claims (3)

A voice communication test result determination method in a device that performs a voice communication test for confirming that a mobile terminal including a mobile phone or a PHS can be normally switched from a data communication mode to a voice communication mode,
The apparatus for performing the voice communication test is:
As a result of performing the voice communication test, a first test result file that samples background noise without a voice signal and holds digitized data;
As a result of performing the voice communication test, a second test result file that samples a voice signal and a signal including noise and holds numerical data;
A first average value calculating means, a threshold setting means, a first determining means, a second average value calculating means, and a second determining means;
The first average value calculating means obtains a total sum of data in the first test result file, and obtains a first average value by dividing the sum by the number of data,
The threshold determination means sets a value larger than the first average value as a threshold;
When the first determination means does not satisfy the predetermined first condition among the data of the second test result file that exceeds the threshold value, an audio signal has not been received. Judge that it was not communicated,
When the second average value calculation means satisfies the first condition among the data of the second test result file that exceeds the threshold, the sum of the data exceeding the threshold is calculated. Determining a second average value by dividing the sum by the number of data exceeding the threshold,
The second determination means, said second test result file data and the second average value, the value obtained by dividing the first mean value, if it meets predetermined second condition An audio communication test result determining method, wherein an audio signal is received and an audio signal is determined to be communicated. A voice communication test result determination device for performing a voice communication test for confirming that a mobile terminal including a mobile phone or a PHS can be normally switched from a data communication mode to a voice communication mode,
As a result of performing the voice communication test, a first test result file that samples background noise without a voice signal and holds numerical data;
As a result of performing the voice communication test, a second test result file that samples a voice signal and a signal including noise and holds numerical data;
Obtains the sum of data at the first test result file, the first average value calculating means for calculating a first average value by dividing the said total sum by the number of data,
Threshold determination means for setting a value larger than the first average value as a threshold;
Among the data in the second test results file, if the data exceeds the threshold value does not satisfy a predetermined first condition, the judges for audio signal has not been received, the speech has not been communicated 1 determination means;
If the data of the second test result file that exceeds the threshold satisfies the first condition, the sum of the data exceeding the threshold is obtained, and the sum exceeds the threshold. Second average value calculating means for obtaining a second average value by dividing by the number of data of
When a value obtained by dividing the second average value from the data of the second test result file by the first average value satisfies a predetermined second condition, an audio signal is received and an audio signal is received. Second determination means for determining that the communication has been established ;
A speech communication test result judging device characterized by comprising: A storage medium storing a voice communication test result judging program for causing a computer to function as each means constituting the voice communication test result judging device according to claim 2 .

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