Circuit and method for preventing microphone sound distortion
A microphone and circuit technology, applied in the direction of transducer circuits, electrical components, sensors, etc., can solve problems such as distortion, inability to adapt itself, troublesome adjustment knobs, etc., to achieve the effect of preventing sound distortion, convenient magnification, and avoiding the effect of appearance
Active Publication Date: 2015-05-13
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] like figure 1 , figure 2 and 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 the s...
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The invention discloses a circuit and method for preventing microphone sound distortion. The circuit for preventing the microphone sound distortion comprises a second-stage in-phase alternating current amplifying circuit and a master control chip connected with each other; the second-stage in-phase alternating current amplifying circuit comprises an amplifying times control circuit connected with the master control chip; microphone signals are input to the second-stage in-phase alternating current amplifying circuit to amplify, and the master control chip controls the amplifying times control circuit to enable the amplifying times control circuit to regulate the amplifying times of the second-stage in-phase alternating current amplifying circuit. According to the method for preventing the microphone sound distortion, a proper gear can be selected according to the microphone of an owner and the volume of a singer to avoid the 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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Inventor 吴并辉喻呈东王国华
Owner FUJIAN STAR NET EVIDEO INFORMATION SYST CO LTD