A circuit and method for preventing microphone sound distortion
A microphone and circuit technology, applied to transducer circuits, electrical components, sensor components, etc., can solve problems such as non-adaptive, troublesome adjustment knobs, distortion, etc.
Active Publication Date: 2018-08-07
FUJIAN STAR NET EVIDEO INFORMATION SYST CO LTD
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Problems solved by technology
The disadvantage of this method is that professional technicians are needed to adjust the adjustable resistor, and it is more subjective. Once the magnification is determined, if the volume of different people's voices is very different, then some people will feel that it is coming out of the speaker. The sound is too small or too loud, and may even be distorted; moreover, these devices in the business place are locked in the cabinet, and users cannot touch them at all. It is troublesome to adjust this knob, and it cannot be self-adaptive.
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[0047] Such as figure 1 , figure 2 with image 3 As shown, a circuit for preventing microphone sound distortion of the present invention includes a second-stage in-phase AC amplifier circuit 2 and a main control chip 3 connected to each other; the second-stage in-phase AC amplifier circuit 2 includes a magnification control circuit 24, and the magnification The control circuit 24 is connected with the main control chip 3; the microphone signal input (the microphone signal can be input by a microphone signal input socket) is amplified to the second stage in-phase AC amplifier circuit 2, and the amplification factor of the second stage amplifier circuit 2 It can be adjusted to prevent microphone sound from being distorted. The main control chip 3 controls the amplification factor control circuit 24 so that the amplification factor control circuit 24 adjusts the amplification factor of the second-stage in-phase AC amplifier circuit 2 .
[0048] Wherein, the input terminal of t...
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The invention provides a circuit for preventing microphone sound distortion, comprising a second-stage in-phase AC amplifier circuit and a main control chip connected to each other; the second-stage in-phase AC amplifier circuit includes a magnification control circuit, and the magnification control circuit is connected to the main control chip The microphone signal is input to the second-stage in-phase AC amplifying circuit for amplification, and the main control chip controls the magnification control circuit, so that the magnification control circuit adjusts the magnification of the second-stage in-phase AC amplifying circuit. The invention also provides a method for preventing microphone sound distortion, which can select a suitable gear according to the microphone provided by oneself and the volume of the singer, so as to prevent sound distortion.
Description
technical field [0001] The invention relates to the technical field of communication equipment, in particular to a circuit and method for preventing microphone sound distortion. Background technique [0002] The traditional KTV song ordering system needs a set-top box, effector, power amplifier, speakers, etc.; our microphone is directly connected to the effector, and the effector will adjust the adjustable resistance through specific tools according to the different microphones used. Microphone magnification, which is suitable for different microphones. The disadvantage of this method is that professional technicians are needed to adjust the adjustable resistor, and it is more subjective. Once the magnification is determined, if the volume of different people's voices is very different, then some people will feel that it is coming out of the speaker. The sound is too small or too loud, and may even be distorted; moreover, these devices in the business premises are locked i...
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IPC IPC(8): H04R3/00
Inventor 吴并辉喻呈东王国华
Owner FUJIAN STAR NET EVIDEO INFORMATION SYST CO LTD