CN114915892A - Audio delay testing method and device for audio equipment and terminal equipment - Google Patents
Audio delay testing method and device for audio equipment and terminal equipment Download PDFInfo
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Abstract
The invention is suitable for the technical field of multimedia terminal performance index measurement, and provides an audio delay test method, an audio delay test device and terminal equipment for audio equipment, wherein the method comprises the steps of playing a test file recorded with sounding actions through a first terminal, extracting video data of the test file, and acquiring audio data through a second terminal, wherein the second terminal is wireless audio equipment; carrying out image recognition on the video data to obtain the audio starting time in the test file; performing audio track identification on the audio data by using audio track separation software to acquire audio starting time in the second terminal; calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal; when the test file comprises a plurality of sound production actions, the contents of the sound production actions, the audio data and the video data have repeatability. The invention provides a simple and easy audio delay test method.
Description
Technical Field
The invention relates to the technical field of multimedia terminal performance index measurement, in particular to an audio delay testing method and device for audio equipment and terminal equipment.
Background
The sound coming from the external terminal and the wired earphone can be directly transmitted into the ear of the user, and the audio signal is called analog signal. Due to the fact that the Bluetooth headset is in wireless connection, digital signals are often adopted, audio information is transmitted through circuit simulation, however, certain time is often needed for circuit simulation, and in the aspects of application ends and terminals, time is also often needed for processing and transmitting the audio information, and therefore the situation that delay occurs easily when the Bluetooth headset is used is solved.
Although the delay of the bluetooth headset cannot be completely solved temporarily, and the delay can be further reduced only by technical means, the excessively high delay may cause trouble to the user, and especially when the terminal is used for playing games, the sound and the picture are not synchronous, which may greatly affect the user experience. Therefore, it is important to test the audio delay of a bluetooth headset.
At present, the commonly used audio delay test method is mainly to add relevant statistical information into the code to count the delay of a certain link, or to use a special device to measure the audio delay, and the requirements on developers or devices are severe.
Disclosure of Invention
The invention mainly aims to provide an audio delay testing method and device of audio equipment and terminal equipment, and aims to solve the problem that a simple and feasible audio delay testing method is lacked in the prior art.
In order to achieve the above object, a first aspect of the embodiments of the present invention provides an audio delay testing method for an audio device, including:
playing a test file recorded with a sounding action through a first terminal, extracting video data of the test file, and acquiring audio data through a second terminal, wherein the second terminal is a wireless audio device;
carrying out image recognition on the video data to obtain the audio starting time in the test file;
performing audio track identification on the audio data by using audio track separation software to acquire audio starting time in the second terminal;
and calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal.
With reference to the first aspect of the present invention, in the first embodiment of the present invention, N pieces of video data are further obtained based on the test file;
when the image recognition of the nth video data fails, carrying out image recognition on any other video data in the N video data again;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
With reference to the first aspect of the present invention, in a second implementation manner of the present invention, before audio data is obtained by a second terminal, an encoding format of a bluetooth audio codec of the second terminal is set.
With reference to the second implementation manner of the first aspect of the present invention, in a third implementation manner of the present invention, the setting a coding format of a bluetooth audio codec of the second terminal includes:
and matching the coding format of the Bluetooth audio codec of the second terminal with the audio mode of the test file.
With reference to the first aspect of the present invention, in a fourth implementation manner of the present invention, performing audio track recognition on the audio data by using audio track separation software, and acquiring an audio start time in a second terminal includes:
searching for a frame in the audio data in which the volume of the track is high and the audio region shows high volume as an audio start time in the second terminal.
With reference to the fourth implementation manner of the first aspect of the present invention, in the fifth implementation manner of the present invention, N pieces of audio data are further obtained by the second terminal;
when the search of the nth audio data fails, re-searching any other audio data in the N audio data;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
With reference to the first aspect of the present invention, in a sixth implementation manner of the present invention, before calculating the audio delay of the second terminal according to the audio start time in the test file and the audio start time in the second terminal, the method includes:
and processing the audio starting time in the second terminal according to the minimum unit of the audio track separation software.
A second aspect of the embodiments of the present invention provides an audio delay testing apparatus for audio equipment, including:
the audio data acquisition module is used for extracting video data of a test file by playing the test file recorded with the sounding action through a first terminal and acquiring audio data through a second terminal, and the second terminal is a wireless audio device;
the image identification module is used for carrying out image identification on the video data and acquiring the audio starting time in the test file;
the audio track identification module is used for carrying out audio track identification on the audio data by using audio track separation software to acquire audio starting time in the second terminal;
and the audio delay calculating module is used for calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal.
A third aspect of embodiments of the present invention provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method provided in the first aspect when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method as provided in the first aspect above.
The embodiment of the invention provides an audio delay testing method for audio equipment, which is characterized in that the audio starting time is obtained through image identification, the audio ending time is obtained through audio track identification based on third-party software, the audio delay of a second terminal, namely wireless audio equipment, is finally calculated, the requirements on developers or testing equipment are low, the implementation process is simple, and the method can be widely applied to the preparation test before product delivery or the verification stage of the audio delay optimization project result.
Drawings
Fig. 1 is a schematic flow chart illustrating an implementation process of an audio delay testing method for an audio device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an audio delay testing apparatus for audio equipment according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Suffixes such as "module", "part", or "unit" used to denote elements are used herein only for the convenience of description of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
As shown in fig. 1, an embodiment of the present invention provides an audio delay testing method for an audio device, which is used to test an audio delay of a wireless audio device, evaluate the performance of the audio device in time, and avoid that a user still has too high audio delay when using the audio device, which affects user experience.
The audio device audio delay test method includes but is not limited to the following steps:
s101, playing the test file recorded with the sounding action through the first terminal, extracting video data of the test file, and acquiring audio data through the second terminal.
The second terminal is a wireless audio device.
In step S101, when the test file includes a plurality of sound generating actions, the contents of the sound generating actions and the audio data and the video data have repeatability.
For example, if the sound generating action of the original test file is stone landing, the test file including the sound generating actions records N times of stone landing, based on which, the video data obtained by extracting the test file is the video recorded by the test file, that is, the N times of stone landing, and the audio data obtained by the second terminal is the sound of stone landing N times. Therefore, through the step S101, N groups of audio data and video data can be obtained, where the content of each piece of audio data is the sound of hitting the ground with the stone, and the content of N pieces of audio data is the sound of hitting the ground with the stone for N times; the content of each piece of video data is a video in which a stone falls, and the content of the N pieces of video data is a video in which the stone falls for N times.
Therefore, in a specific application, when a more accurate audio delay needs to be calculated by taking values for multiple times, the test file used in the embodiment of the present invention can provide a reliable calculation basis.
It is contemplated that the wireless audio device may be a bluetooth headset or a bluetooth speaker.
It should be noted that the content of the audio data and the video data is associated with the actual application environment of the first terminal and the second terminal, and the content of the audio data and the video data has repeatability.
For example, when the first terminal is a game machine or a mobile terminal with game function as the main part, the content of the video data provided by the test file and the content of the audio data extracted by the second terminal are both related to the game content, and the specific content may be a shooting scene, and the like.
In one embodiment, one implementation manner of obtaining the test file may be:
recording the repeated sound production process of the same target;
each vocalization action in the repeated vocalization process is captured, and N groups of audio data and video data based on N vocalization are obtained and used as test files.
And S102, carrying out image recognition on the video data, and acquiring the audio starting time in the test file.
In the embodiment of the present invention, the actual audio data of the test file and the video data extracted in the embodiment of the present invention are overlapped, so that the image recognition is performed on the video data, and the frame number of the picture when the sound is emitted in the video data is actually recognized. For example, the number of frames when a pistol shoots, after the muzzle emits a flame, the flame is no longer spread; and in a piano game, the number of frames after the special effect appears (the piano key becomes dark) when the piano key is pressed, and the special effect is finished (the piano key does not become dark).
It should be noted that, for example, the specific implementation of image recognition may be to use image data under various sound production scenarios as a training set, use sound production features based on the image data as a verification set, train a suitable neural network model, such as a deep learning image recognition neural network of a BP neural network, a full-link neural network, and obtain an image recognition tool to be used in the embodiment of the present invention when parameter values reach a preset precision.
In the embodiment of the present invention, a plurality of sets of audio data and video data are obtained by capturing the test file for a plurality of times, so as to avoid the case where the audio start time or audio end time is failed to be obtained due to the failure of image recognition or the failure of audio track search in the above step S102 and the following step S103.
Namely, when the above step S102 is executed, the method includes:
obtaining N pieces of video data based on the test file;
when the image recognition of the nth video data fails, carrying out image recognition on any other video data in the N video data again;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
It should be noted that, in the test file used in the embodiment of the present invention, the contents of the audio data and the video data are single, such as shooting, playing piano, tapping, and the like. Therefore, the time length of the test file is controlled within the preset time, and the test file is completely replayed when the test file is repeatedly played.
S103, carrying out audio track identification on the audio data by using audio track separation software, and acquiring the audio starting time in the second terminal.
In the step S103, the audio track separation software is any multimedia processing software with an order grabbing function, such as Shotcut software.
In practical applications, the audio track recognition can also be performed by directly inputting the test file into third-party software. The audio data and the video data are synchronized, and the audio track of the audio data is synchronized with the video data and the audio data, so that the audio end time obtained by the audio track identification result and the audio start time obtained by the image identification result in the above steps can calculate the audio delay of the second terminal.
In one embodiment, one implementation manner of the step S103 may be:
searching for a frame in the audio data in which the volume of the track is high and the audio region shows high volume as an audio start time in the second terminal.
In the embodiment of the present invention, the test file is captured for multiple times to obtain multiple sets of audio data and video data, so as to avoid the situation that the audio start time or audio end time is failed to be obtained due to the failure of image recognition or the failure of audio track search in the above steps S102 and S103.
Namely, when the above step S103 is executed, the method includes:
obtaining N pieces of audio data through a second terminal;
when the search of the nth audio data fails, re-searching any other audio data in the N audio data;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
In the embodiment of the present invention, by setting the bluetooth audio codec, the sound quality problem when the audio data is acquired by the second terminal is prevented from affecting the process and result of the audio track identification in the step S103.
Therefore, before the audio data is acquired by the second terminal in step S101, the encoding format of the bluetooth audio codec of the second terminal is also set.
Preferably, setting an encoding format of a bluetooth audio codec of the second terminal includes:
and matching the coding format of the Bluetooth audio codec of the second terminal with the audio mode of the test file.
S104, calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal.
In the above step S104, the calculation of the audio delay is the difference between the audio start time in the test file and the audio start time in the second terminal, but in practical applications, it is usually difficult to directly calculate the audio start time obtained by image recognition and the audio end time identified by the audio track, and therefore, before the above step S104, the method further includes:
and processing the audio starting time in the second terminal according to the minimum unit of the audio track separation software.
The embodiment of the present invention further describes an application of the audio delay testing method for audio equipment, in which a shooting game is used as a test file for content of audio data and video data, and a testing process is as follows:
1) and connecting the second terminal and the first terminal in a matching way, and setting the coding format of the Bluetooth audio codec of the second terminal as the coding format supported by the shooting game in the first terminal.
2) A total of 15 sets of data were obtained at 15 shots and the shot interval was 4s or more. The recording file shot 15 times is a test file and 15 sets of data include 15 video data and 15 audio data based on the act of firing the shot.
3) And (3) identifying the frame number of flame which can not be continuously diffused after the flame is gradually emitted from the muzzle after the firing is clicked by using an image identification tool, and taking the value as the audio starting time. Wherein 15 sets of audio start times are obtained based on the 15 sets of data.
4) And adding a test file by using a Shotcut tool, identifying the number of frames in the progress bar when the volume of the audio track is close to a high peak and the audio region displays high volume, and taking the value as the audio end time. Wherein 15 sets of audio end times are obtained based on the 15 sets of data.
5) Since the minimum unit of Shotcut software is a frame number other than milliseconds, processing is numerically required.
6) Taking 15 sets of data of the audio start time and the audio end time as an example, as shown in table 1 below, the decimal point is followed by the frame number, so the end time is subtracted from the start time and multiplied by 1000 to obtain the frame number difference, and then multiplied by the second of each frame (1/240) to obtain the time difference.
Here, the audio delay of the second terminal is calculated by the formula:
(2.215-2.144)*1000*1/240＝0.296。
as shown in fig. 2, an embodiment of the present invention further provides an audio delay testing apparatus 20 for an audio device, including:
the audio data acquisition module 21 is configured to play a test file recorded with a sounding action through a first terminal, extract video data of the test file, and acquire audio data through a second terminal, where the second terminal is a wireless audio device;
the image recognition module 22 is configured to perform image recognition on the video data to obtain an audio start time in the test file;
the audio track identification module 23 is configured to perform audio track identification on the audio data by using audio track separation software, and obtain an audio start time in the second terminal;
and an audio delay calculating module 24, configured to calculate an audio delay of the second terminal according to the audio start time in the test file and the audio start time in the second terminal.
As shown in fig. 3, an embodiment of the present invention further provides a terminal device 30, and a schematic diagram of an internal logic structure is shown in fig. 3, where the terminal device 30 includes a memory 31, a processor 32, and a computer program 33, such as a static reactive power source configuration program, stored on the memory 31 and executable on the processor 32. The processor 32 implements the steps in the above-described various audio device audio delay test embodiments, such as steps S101 to S104 shown in fig. 1, when executing the computer program 33. Alternatively, the processor 32, when executing the computer program 33, implements the functions of the modules/units in the device embodiments, such as the functions of the audio data acquisition module 21, the image recognition module 22, the audio track recognition module 23, and the audio delay calculation module 24 shown in fig. 2.
The computer program 33 may be divided into one or more modules/units, which are stored in the memory 31 and executed by the processor 32 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 33 in the terminal device 30. For example, the computer program 33 may be divided into a target file acquisition module and a file parsing module.
The terminal device 30 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 32, a memory 31. Those skilled in the art will appreciate that fig. 3 is merely an example of the terminal device 30, and does not constitute a limitation of the terminal device 30, and may include more or fewer components than those shown, or some of the components may be combined, or different components, e.g., the terminal device may also include input-output devices, network access devices, buses, etc.
The Processor 32 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 31 may be an internal storage unit of the terminal device 30, such as a hard disk or a memory of the terminal device 30. The memory 31 may also be an external storage device of the terminal device 30, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 30. Further, the memory 31 may also include both an internal storage unit and an external storage device of the terminal device 30. The memory 31 is used for storing the computer program and other programs and data required by the terminal device. The memory 31 may also be used to temporarily store data that has been output or is to be output.
An embodiment of the present invention further provides a storage medium, where the storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium, where the computer program, when executed by a processor, implements the steps in the audio delay testing method for an audio device as described in the foregoing embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the foregoing embodiments illustrate the present invention in detail, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (10)
1. An audio delay testing method for an audio device, comprising:
playing a test file recorded with a sounding action through a first terminal, extracting video data of the test file, and acquiring audio data through a second terminal, wherein the second terminal is a wireless audio device;
carrying out image recognition on the video data to obtain the audio starting time in the test file;
performing audio track identification on the audio data by using audio track separation software to acquire audio starting time in the second terminal;
calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal;
when the test file comprises a plurality of sounding actions, the contents of the sounding actions and the audio data and the video data have repeatability.
2. The audio device audio delay test method of claim 1, further comprising:
obtaining N pieces of video data based on the test file;
when the image recognition of the nth video data fails, carrying out image recognition on any other video data in the N video data again;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
3. The audio device audio delay test method of claim 1, wherein an encoding format of a bluetooth audio codec of the second terminal is set before audio data is acquired through the second terminal.
4. The audio device audio delay test method of claim 2, wherein setting an encoding format of a bluetooth audio codec of the second terminal comprises:
and matching the coding format of the Bluetooth audio codec of the second terminal with the audio mode of the test file.
5. The audio device audio delay test method of claim 1, wherein performing track recognition on the audio data using track separation software to obtain an audio start time in the second terminal comprises:
searching for a frame in the audio data in which the volume of the track is high and the audio region shows high volume as an audio start time in the second terminal.
6. The audio device audio delay test method of claim 5, further comprising:
obtaining N pieces of audio data through a second terminal;
when the search of the nth audio data fails, re-searching any other audio data in the N audio data;
wherein N is a positive integer, and N is a positive integer less than or equal to N.
7. The audio device audio delay test method of claim 1, wherein calculating the audio delay of the second terminal before according to the audio start time in the test file and the audio start time in the second terminal comprises:
and processing the audio starting time in the second terminal according to the minimum unit of the audio track separation software.
8. An audio delay testing apparatus for an audio device, comprising:
the audio data acquisition module is used for playing a test file recorded with a sounding action through a first terminal, extracting video data of the test file, and acquiring audio data through a second terminal, wherein the second terminal is a wireless audio device;
the image identification module is used for carrying out image identification on the video data and acquiring the audio starting time in the test file;
the audio track identification module is used for carrying out audio track identification on the audio data by using audio track separation software to acquire audio starting time in the second terminal;
and the audio delay calculating module is used for calculating the audio delay of the second terminal according to the audio starting time in the test file and the audio starting time in the second terminal.
9. A terminal device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the audio device audio delay test method according to any one of claims 1 to 7 when executing the computer program.
10. A storage medium being a computer readable storage medium having a computer program stored thereon, wherein the computer program, when being executed by a processor, carries out the steps of the audio device audio delay testing method according to any one of claims 1 to 7.
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