Microphone gain abnormity adjusting method and device
An adjustment method and a technology for adjusting devices, which are applied in transducer circuits, speech analysis, instruments, etc., and can solve problems such as echoes, sound echoes, and affecting user experience
Active Publication Date: 2021-02-05
ZHEJIANG HUACHUANG VISION TECH CO LTD
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Problems solved by technology
However, due to the unreasonable gain setting of the microphone in the front stage, it may cause clipping of the sound collected by the microphone. In this case, even if the final output volume of the terminal device is within the normal range, problems such as echo will still be caused. Affect the user experience
[0004] It can be seen that in the prior art, even if the terminal device can keep the output volume in the normal range by adjusting its own gain, if the gain setting of the microphone in the front stage is unreasonable, it will still cause echo in the output sound, thereby affecting the user experience
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[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0054] See figure 1 , is a structural schematic diagram of a conference system. figure 1 It includes a microphone 101 at the front stage and a terminal device 102 at the rear stage. The microphone 101 includes gooseneck microphones, interface microphones, and omnidirectional microphones with different gains, and different types of microphones can be selected according to actual meeting scenarios, and the type of the microphone 101 is not particularly limited here.
[0055] should be understood. Once the type of the microphone 101 is determined, the adjustable range of the gain of the microphone 101 is also determined accordingly, and the range of the amplitude of the voice signal that is allowed to be output is also determined accordingly. Theor...
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The invention discloses a microphone gain abnormity adjusting method and device, and the method and device can timely determine a possible unreasonable gain setting condition of a microphone accordingto an output signal of the microphone, and timely adjust the gain of the microphone according to a preset mode. Therefore, the quality of the finally output audio is improved. The microphone gain abnormity adjusting method comprises the steps that a terminal device receives a first voice signal output by a microphone, the first voice signal is formed by N sampling points after analog-to-digital conversion, and N is a positive integer not smaller than 1; and if the terminal device determines that the sampling value of any sampling point in the N sampling points is greater than or equal to a preset threshold, the terminal device resets the gain of the microphone based on a preset mode, and the preset threshold is associated with the sampling bit width corresponding to the N sampling points.
Description
technical field [0001] The invention relates to the technical field of signal detection, in particular to a method and device for adjusting abnormal microphone gain. Background technique [0002] With the maturity of video conferencing interactive technology, online meetings have become the choice of more and more people, and the meeting scenes are also diverse, such as various meeting rooms, offices, classrooms, command halls, etc., according to the number of participants and meeting space Due to differences in size and other factors, different types of microphones will be selected during meetings, such as gooseneck microphones with different gains, interface microphones, and omnidirectional microphones. [0003] In the prior art, when the microphone and the terminal device are separated, both the microphone and the terminal device can adjust their own gain to adjust the volume, and even if the gain setting of the microphone in the front stage is unreasonable, it can still ...
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IPC IPC(8): H04R3/00H04R29/00G10L21/0208
CPCH04R3/00H04R29/004G10L21/0208H04R2410/03G10L2021/02082
Inventor 贾天婕王克彦曹亚曦杨国全廖焕柱
Owner ZHEJIANG HUACHUANG VISION TECH CO LTD