CN110033788B - Sound detection method, device and system of display equipment - Google Patents
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- 230000005236 sound signal Effects 0.000 claims description 21
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
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Abstract
The invention discloses a sound detection method, a device and a system of display equipment, wherein the sound detection method of the display equipment comprises a signal source interface, and the sound detection method comprises the following steps: acquiring audio output by the display equipment and acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal input into the signal source interface; and analyzing the audio collected by the audio collecting device to obtain a sound detection result. The display detection method provided by the invention can replace workers to detect the display equipment so as to avoid manual detection errors, such as missing detection, wrong detection and the like.
Description
Technical Field
The present invention relates to the field of device detection, and in particular, to a method, an apparatus, and a system for detecting a sound of a display device.
Background
The display device is used for displaying various information and is widely applied to the aspects of office work, teaching, entertainment, commercial demonstration and the like. However, the existing display device can not only display on the screen, but also play sound at the same time. In particular, liquid crystal display devices such as televisions are usually equipped with a sound playing device, and the sound playing device plays sound according to received multiple video or audio signal sources. When the display device is assembled and is detected before leaving a factory, generally, a worker detects each signal source interface and function of the display device one by one on a production line, and the sound detection mainly judges whether the display device is qualified or not by listening to sound played by the display device by the worker, and does not have a real objective detection standard.
Accordingly, those skilled in the art have endeavored to develop a more standardized sound detection method, apparatus, and system.
Disclosure of Invention
In view of the above defects in the prior art, the technical problem to be solved by the present invention is that manual detection requires manual subjective judgment, and manual detection errors may occur, which may result in missed detection.
In order to solve the above problem, the present invention provides a sound detection method for a display device, where the display device includes a signal source interface, and the sound detection method includes the following steps:
acquiring audio output by the display equipment and acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal input into the signal source interface;
and analyzing the audio collected by the audio collecting device to obtain a sound detection result.
Further, the audio detection signal includes at least one of a two-channel audio signal with the same phase and different frequencies, a two-channel audio signal with the same frequency and different phases, and a two-channel frequency sweep signal with the same frequency and the same phase but varying frequency.
Further, the analyzing the audio collected by the audio collecting device includes at least one of silence detection analysis, left and right channel reverse detection analysis, left and right channel phase difference analysis, sound lightness detection analysis, sound level detection analysis, sound break detection analysis and sound vibration detection analysis.
Further, the audio collected by the audio collecting device is obtained through USB, LAN, Bluetooth or WiFi.
Further, the audio detection signal is an ATV signal, an AV signal, a DP signal, a DTMB signal, a DVI signal, an HDMI signal, an MHL signal, a VGA signal, or a YPrPb signal.
In order to solve the above problem, the present invention further provides a sound detection apparatus for a display device, where the display device includes a signal source interface, and the sound detection apparatus includes: a storage unit adapted to store a sound detection program and a processing unit adapted to execute the sound detection program to implement:
acquiring audio output by the display equipment and acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal input into the signal source interface;
and analyzing the audio collected by the audio collecting device to obtain a sound detection result.
Further, the audio detection signal includes at least one of a two-channel audio signal with the same phase and different frequencies, a two-channel audio signal with the same frequency and different phases, and a two-channel frequency sweep signal with the same frequency and the same phase but varying frequency.
Further, the analyzing the audio collected by the audio collecting device includes at least one of silence detection analysis, left and right channel reverse detection analysis, left and right channel phase difference analysis, sound lightness detection analysis, sound level detection analysis, sound break detection analysis and sound vibration detection analysis.
In order to solve the above problem, the present invention also provides a sound detection system of a display device, including: audio acquisition device and above-mentioned sound detection device.
Further, the display device further comprises a signal source generating device for providing the sound detection signal to the display device.
By implementing the sound detection method, the device and the system of the display equipment provided by the invention, the following technical effects are achieved:
(1) the display device can be detected instead of a worker to avoid manual detection errors, such as missing detection, false detection, and the like.
(2) The method can simultaneously detect various problems (such as silence, reversal, light sound, sound break, sound vibration and the like) of the sound played by the display equipment, so that the detection result is more accurate, and the reason of the problem is more conveniently found.
(3) The display device is generally provided with communication ports such as a network port and a USB, and the like, so that favorable conditions are provided for data transmission, and the detection is more convenient and faster.
(4) Multiple signal source interfaces can be detected.
(5) The time cost of culturing and detecting workers is saved.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic diagram of a sound detection method of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sound detection system of a display device according to an embodiment of the present invention;
fig. 3 is a schematic view of a sound detection system of a display device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution of the present invention will be described in detail with several embodiments.
Example one
Fig. 1 is a schematic diagram of a sound detection method of a display device according to an embodiment of the present invention, and as shown in fig. 1, the sound detection method of the display device according to the embodiment includes the following steps:
step S1: and acquiring the audio output by the display equipment acquired by the audio acquisition device, wherein the audio output by the display equipment is generated based on the audio detection signal of the input signal source interface.
For example, in this embodiment, a display device to be detected (e.g., a Television, a computer display screen or an advertisement screen, etc.) is equipped with a plurality of signal source interfaces to be compatible with at least one of ATV (Analog TV), AV (Audio and Video) signals, DP (display port, High-Definition Digital display port) signals, DTMB (Digital Television Terrestrial Multimedia Broadcasting), DVI (Digital Visual Interface), HDMI (High Definition Multimedia Interface, High-Definition Multimedia Interface) signals, MHL (Mobile High-Definition Link, Mobile terminal Video standard) signals, VGA (Video Graphics Array ) signals or yppb (color difference component Analog) signals. Connecting all channels (namely signal source interfaces) to be detected of the display equipment to be detected with a signal source generating device (either a manual wire plugging mode or a robot automatic wire plugging mode can be adopted, and after all the channels are detected, either a manual wire pulling mode or a robot automatic wire pulling mode can be adopted), adjusting the display equipment to be detected to be in a corresponding mode of the signal channel to be detected through infrared remote control or network cable communication, sending an instruction to the signal source generating device by a sound detecting device to enable the signal source generating device to send corresponding detection signals to the display equipment to be detected to enable the display equipment to be played, acquiring played audio by an audio acquiring device, and the like, adjusting the display equipment to be in a corresponding mode of the next signal channel to be detected … …, for example, acquiring audio of ATV signals and HDMI signals, connecting the ATV signal source interface and the HDMI signal source interface on the display equipment with the signal source generating device, the display equipment is adjusted to be in an ATV mode through infrared remote control or network cable communication, the sound detection device sends an instruction to the signal source generation device, the signal source generation device sends an ATV detection signal, the display equipment plays audio, and the audio acquisition device acquires the played audio; and carrying out audio acquisition of the next signal, adjusting the display equipment to the HDMI mode, sending an instruction to the signal source generating device by the sound detecting device, enabling the signal source generating device to send an HDMI detection signal, playing the audio by the display equipment, and acquiring the played audio by the audio acquisition device. And by analogy, if the display equipment can also receive other signals to be subjected to related detection, the corresponding playing audios are sequentially collected.
In another preferred embodiment, as shown in fig. 3, a sound detection device may be connected to the display device to be detected, where the sound detection device may be configured to acquire a state of the display device to be detected, and send a corresponding instruction according to the acquired state of the display device or control the display device to be detected to perform an operation, specifically, the method includes automatically acquiring an existing mode of the display device to send the corresponding instruction, then automatically controlling the display device to switch to a next channel mode to be detected, and so on. For example, taking image acquisition of an ATV signal and an HDMI signal as an example, after the sound detection device is connected to the display device to be detected, the sound detection device automatically acquires a mode displayed by the display device to be detected, if the acquired mode is not the ATV mode or the HDMI mode, the sound detection device controls the display device to be detected to switch to the ATV mode (or to switch to the HDMI mode, which is randomly selected in a channel in which the signal needs to be detected), then sends a command for detecting the ATV signal to the signal source generation device, the signal source generation device sends an ATV signal to the display device to be detected to play audio and acquire the audio, then the sound detection device controls the display device to be detected to switch to the HDMI mode to continue audio acquisition, if the acquired mode is the ATV mode or the HDMI mode, such as the acquired HDMI mode, the sound detection device directly sends a command for detecting the HDMI signal to the signal source, the signal source generating device sends an HDMI signal to the display device to be detected to play and collect audio, and then the sound detecting device controls the display device to be detected to switch to an ATV mode to continue audio collection.
In this embodiment, the detection signal sent by the signal source generating device includes an audio detection signal, and the audio detection signal includes at least one of a two-channel audio signal with the same phase and different frequencies, a two-channel audio signal with the same frequency and different phases, and a two-channel audio signal with the same frequency and the same phase but varying frequency. For example, the two-channel audio signals with the same phase and different frequencies may be audio signals with a left channel frequency of 400Hz, a right channel frequency of 1000Hz, and the same left and right channel phases; the dual-channel audio signals with the same frequency and different phases can be audio signals with the left and right channel frequencies of 1000Hz and the phase difference of 180 degrees; the two-channel frequency sweep signal with the same frequency and phase but changing frequency can be a frequency sweep signal with the same left and right channel parameters but the frequency from 20Hz to 2000 Hz. Sound problems, for example, including silence, inversion, soft, broken, and ringing, can be detected from these audio detection signals having characteristics, and the root cause of the problem can be accurately found from these detected problems. In practical application, the audio detection signal sent by the signal source generating device may be a continuous audio signal composed of three sections of audio signals, the first section is a sound signal with the same left channel frequency of 400Hz and the same right channel frequency of 1000Hz, the second section is a sound signal with the same left and right channel frequencies of 1000Hz, the same phase difference of 180 degrees and the same other parameters, and the third section is a sweep frequency signal with the same left and right channel parameters but the same frequency from 20Hz to 2000 Hz.
Further, the audio collected by the audio collecting device can be obtained through USB, LAN, Bluetooth or WiFi. For example, an audio acquisition device (e.g., a microphone) is connected to the sound detection device through a usb cable, and the audio acquired by the audio acquisition device is transmitted to the sound detection device for analysis. Or the audio acquisition device or the sound detection device initiates a Bluetooth request, and information interaction is performed after matching is successful.
Step S2: and analyzing the audio collected by the audio collecting device to obtain a sound detection result. That is, the sound detection apparatus analyzes the received collected audio, i.e., the left and right audio groups, draws the two audio groups into sound wave patterns, and performs related detection analysis, which may specifically include at least one of silence detection analysis, left and right channel reverse detection analysis, left and right channel phase difference analysis, sound lightness detection analysis, sound level detection analysis, sound break detection analysis, and sound vibration detection analysis.
Silence detection and analysis, wherein if the sound wave pattern of the collected audio (namely, the sound detection device draws the received collected audio into the sound wave pattern, which is briefly described as the sound wave pattern of the collected audio in the following) is a straight line, the detection result is silence; otherwise, the detection result is voiced.
The left and right sound channels are reversely detected and analyzed, if the played audio detection signal is an audio signal with the left sound channel frequency of 400Hz and the right sound channel frequency of 1000Hz, if the sound wave pattern of the collected audio is the same with the left sound channel frequency of 400Hz and the right sound channel frequency of 1000Hz, the detection result is not reversed; if the sound wave pattern of the collected audio is that the frequency of the left sound channel is 1000Hz, and the frequency of the right sound channel is 400Hz, the detection result is reverse.
And (3) analyzing the phase difference of the left and right sound channels, if the played audio detection signal is audio with the left and right sound channels both having the frequency of 1000Hz and the phase difference of 180 degrees, calculating the phase of the component with the frequency of 1000Hz in the collected audio (namely the collected audio received by the sound detection device, which is briefly described as the collected audio hereinafter), subtracting the obtained phases of the left and right sound channels to obtain the required phase difference, comparing and analyzing the phase difference with the phase difference of 180 degrees of the audio detection signal, if the phase difference is within a normal range, the detection result is that the phase difference detection is normal, otherwise, the detection result is that the phase difference.
And (3) detecting and analyzing the sound weight, if the played audio detection signal is audio with the left and right sound channels both having the frequency of 1000Hz and the same amplitude, calculating the amplitude of a component with the frequency of 1000Hz in the collected audio, if the amplitudes of the left and right sound channels are both in a normal range, detecting the sound weight normally, otherwise, detecting the sound weight abnormally.
And (3) sound level detection and analysis, wherein if the played audio detection signal is audio with the left and right channels both having the frequency of 1000Hz and the same amplitude, the amplitude of the component with the frequency of 1000Hz in the acquired audio is calculated, if the difference value of the amplitudes of the left and right channels is in a normal range, the detection result is that the sound level detection is normal, otherwise, the detection result is that the sound level detection is abnormal.
And (3) sound break detection and analysis, if the played audio detection signal is audio with the left and right channel frequencies being 1000Hz and the amplitude being the same, calculating whether the component with the frequency of 1000Hz in the collected audio is continuous, if so, the detection result is that the sound break detection is normal, otherwise, the detection result is that the sound break detection is abnormal.
And sound vibration detection and analysis, wherein if the played audio detection signal is frequency sweep audio with the frequency from 20Hz to 2000Hz and uniform amplitude, frequency domain analysis is carried out on the collected audio, and if the amplitude of a certain frequency is far greater than a normal value, the display equipment is considered to generate casing resonance at the frequency point. The reason for this analysis may be that when the frequency of the audio is close to the resonance frequency of the casing, the casing will generate strong resonance, mainly because the casing screws are not tightened.
Example two
Fig. 2 is a schematic view of a sound detection system of a display device according to an embodiment of the present invention, and as shown in fig. 2, the sound detection system of the present embodiment includes a display device to be detected, an audio acquisition device, a signal source generation device, and a sound detection device.
Display devices to be detected, such as televisions, computer display screens (LCD, liquid crystal display, etc.) and advertisement screens, etc., the screens of these display devices also play audio while displaying images, so it is also necessary to detect the audio output by these display devices, that is, the audio played when receiving different information source signals through the signal source interfaces of these devices is subjected to sound detection, such as silence, inversion, lightness, sound interruption and sound vibration, etc., wherein each display device is provided with a plurality of signal source interfaces to compatibly receive a plurality of signal sources, such as at least one of ATV signal, AV signal, DP signal, DTMB signal, DVI signal, HDMI signal, MHL signal, VGA signal or YPrPb signal. Therefore, it is necessary to perform sound detection before shipment on all signal source interfaces of the display device to ensure the quality of the television.
And the audio acquisition device is used for acquiring audio played by the display equipment to be detected and transmitting the acquired audio information to the sound detection device for analysis in a wired or wireless mode. For example, a microphone records the sound played by the display device to be detected, and then transmits the sound to the sound detection device.
And the sound detection device is used for analyzing the audio collected by the audio collection device and outputting a detection result. The method specifically comprises the following steps: a storage unit adapted to store a sound detection program, and a processing unit adapted to execute the sound detection program to implement the following processes: acquiring audio output by display equipment acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal of an input signal source interface; and analyzing the audio collected by the audio collecting device to obtain a sound detection result. The process is similar to the first embodiment and is not described herein again.
In another preferred embodiment, as shown in fig. 3, the sound detection device may be connected to the display device to be detected, and the processing unit is adapted to execute the sound detection program to further implement the following processes: and automatically acquiring the existing mode of the display equipment to be detected so as to send a corresponding control instruction and control the display equipment to switch to the next channel mode to be detected, and the like.
The signal source generating device is used for providing detection signals including sound detection signals for the display equipment to be detected, and can provide at least one of a plurality of signal sources, such as TV signals, AV signals, DP signals, DTMB signals, DVI signals, HDMI signals, MHL signals, VGA signals or YPrPb signals.
In this embodiment, the signal source generating device includes: the HDMI signal processing system comprises a central processing unit, an HDMI distributor, a signal converter and a signal source interface; the central processing unit outputs an HDMI video signal; for example, the output HDMI video signal includes a 4K signal with HDCP encryption and/or an HDMI signal without HDCP encryption. The HDMI distributor is used for inputting HDMI video signals or outputting multi-path HDMI video signals. The signal converter converts the HDMI video signal output by the HDMI distributor into other video signals, and for example, the signal converter includes at least one of a DVI converter, an AV converter, an YPbPr converter, and a VGA converter. The system comprises a Digital Video Interface (DVI) converter, an audio-video (AV) converter, a YPbPr converter and a Video Graphics Array (VGA) converter, wherein the DVI converter is connected with an HDMI distributor which inputs a 4K signal encrypted by HDCP, and the AV converter, the YPbPr converter and the VGA converter are connected with the HDMI distributor which inputs the HDMI signal not encrypted by HDCP; the signal source interface outputs a video signal. The signal source interface comprises at least one of an HDMI signal source interface, a DVI signal source interface, an AV signal source interface, an YPbPr signal source interface and a VGA signal source interface, and can be respectively butted with the signal source interface of the display equipment to be detected. The signal source generating device integrates various signal source functions together, and the integration level is high. The user can appoint the audio and video content in the signal source according to own needs, simultaneously has bluetooth module, wiFi module and data transmission module, and mutual noninterference between the module detects data transmission convenient and fast.
It should be noted that, whether the interactive transmission function such as the USB port, the LAN port, the bluetooth, the wifi, etc. is normal may be detected based on the signal source generating device. And can be according to the demand, the detection content (ATV signal, AV signal, DP signal, DTMB signal, DVI signal, HDMI signal, MHL signal, VGA signal or YPrPb detection of signal) is selected independently, because HDMI signal detection, MHL signal detection, DP signal detection, AV signal detection, YPbPr signal detection, VGA signal detection, ATV signal detection, DTMB signal detection, the apparatus configuration that defect detection of television screen used is the same, can merge into a board, but all project detection time is longer, according to the detection project and detection time that the customer selects, can adjust the board quantity properly, with the detection sequence.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. A sound detection method of a display device, the display device including a signal source interface, the sound detection method comprising the steps of:
acquiring audio output by the display equipment and acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal input into the signal source interface;
analyzing the audio collected by the audio collecting device to obtain a sound detection result;
the audio detection signals comprise at least one of in-phase and different-frequency binaural audio signals, same-frequency and different-phase binaural audio signals and same-frequency and same-phase binaural frequency sweeping signals with frequency variation;
the analysis of the audio collected by the audio collecting device comprises at least one of silence detection analysis, left and right channel reverse detection analysis, left and right channel phase difference analysis, sound light detection analysis, sound level detection analysis, sound break detection analysis and sound vibration detection analysis;
acquiring the audio collected by the audio collecting device through USB, LAN, Bluetooth or WiFi;
the audio detection signal is an ATV signal, an AV signal, a DP signal, a DTMB signal, a DVI signal, an HDMI signal, an MHL signal, a VGA signal or an YPrPb signal.
2. A sound detection apparatus of a display device, the display device including a signal source interface, the sound detection apparatus comprising: a storage unit adapted to store a sound detection program and a processing unit adapted to execute the sound detection program to implement:
acquiring audio output by the display equipment and acquired by an audio acquisition device, wherein the audio output by the display equipment is generated based on an audio detection signal input into the signal source interface;
analyzing the audio collected by the audio collecting device to obtain a sound detection result;
the audio detection signals comprise at least one of in-phase and different-frequency binaural audio signals, same-frequency and different-phase binaural audio signals and same-frequency and same-phase binaural frequency sweeping signals with frequency variation;
and analyzing the audio collected by the audio collection device, wherein the analysis comprises at least one of silence detection analysis, left and right channel reverse detection analysis, left and right channel phase difference analysis, sound light detection analysis, sound level detection analysis, sound break detection analysis and sound vibration detection analysis.
3. A sound detection system for a display device, comprising: an audio acquisition device and a sound detection device as claimed in claim 2.
4. The sound detection system of a display device of claim 3, further comprising signal source generation means for providing the sound detection signal to the display device.
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| EP2373009A3 (en) * | 2010-03-31 | 2014-05-28 | Sony Corporation | Television signal receiver apparatus with sound signal detection |
| CN102905161A (en) * | 2012-09-28 | 2013-01-30 | 福州德州电子科技有限公司 | Automatic test method and system of television flow line production |
| CN205812272U (en) * | 2016-06-28 | 2016-12-14 | 青岛歌尔声学科技有限公司 | A kind of audio collection frock and cloud server |
| CN106028248B (en) * | 2016-08-08 | 2018-11-13 | 广州视源电子科技股份有限公司 | Loudspeaker polarity detection method and device |
| CN207491132U (en) * | 2017-08-17 | 2018-06-12 | 上海帆声图像科技有限公司 | A kind of detection production line for showing equipment |
| CN207197785U (en) * | 2017-08-17 | 2018-04-06 | 上海帆声图像科技有限公司 | A kind of detecting system of display device |
| CN107666609A (en) * | 2017-11-08 | 2018-02-06 | 无锡基隆电子有限公司 | A kind of loudspeaker left and right acoustic channels distinguish detection device and its detection method |
| CN208581307U (en) * | 2018-08-01 | 2019-03-05 | 上海帆声图像科技有限公司 | A kind of signal processing apparatus |
| CN108900835A (en) * | 2018-09-21 | 2018-11-27 | 南京创维平面显示科技有限公司 | A kind of television audio phase test device and test method |
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2019
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