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Low-noise wireless audio transmitting system based on linear amplification circuit

A technology of linear amplification and audio transmission, applied in the field of wireless transmission, can solve the problems of affecting the hearing effect of the receiving end, signal weakening, and inability to process audio signals, etc., to achieve the effect of facilitating long-distance transmission, avoiding interference, and improving auditory effects

Inactive Publication Date: 2017-01-04
成都云材智慧数据科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the current wireless audio transmission system cannot effectively process the audio signal, resulting in signal weakening and affecting the hearing effect of the receiving end, and to provide a low-noise wireless audio transmission system based on a linear amplifier circuit

Method used

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  • Low-noise wireless audio transmitting system based on linear amplification circuit
  • Low-noise wireless audio transmitting system based on linear amplification circuit
  • Low-noise wireless audio transmitting system based on linear amplification circuit

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Embodiment

[0021] Such as figure 1 As shown, the present invention is mainly composed of the processing chip U, the negative electrode is connected to the GND pin of the processing chip U after the resistor R7, the positive electrode is used as the capacitor C8 of the audio signal input end after the resistor R4, the resistor R5 connected in parallel with the capacitor C8, the positive electrode The capacitor C7 connected to the IN pin of the processing chip U, the negative pole connected to the positive pole of the capacitor C8 after passing through the resistor R6, the noise reduction circuit connected to the VCC pin of the processing chip U, and the mixing circuit connected to the noise reduction circuit frequency circuit, an oscillating circuit connected to the frequency mixing circuit, a linear amplifying circuit connected to the OUT pin of the processing chip U, and a signal transmitting circuit connected to the linear amplifying circuit; the mixing circuit is also connected to the ...

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Abstract

The invention discloses a low-noise wireless audio transmitting system based on a linear amplification circuit. The system is characterized by mainly comprising a processing chip U and a capacitor C8. A negative electrode of the capacitor C8 is connected with a resistor R7 and then a GND pin of the processing chip U, and a positive electrode of the capacitor C8 is connected with a resistor R4 and then used as an audio signal input end. The system can process an audio signal. The system can improve the amplitude of the audio signal, thereby compensating for the weakness of the audio signal caused during long-distance transmission and improving the hearing effect of the receiving end. Meanwhile, the system can eliminate the current noise, prevent the current noise from interfering the audio signal, improve the sharpness of the audio signal, and improve the quality of signal transmission. The system can also make the amplitude of an output audio signal proportional to the amplitude of an input audio signal, avoid non-linear distortion of the audio signal, improve the stability of the audio signal, and thus facilitate long-distance transmission of the audio signal.

Description

technical field [0001] The invention relates to the field of wireless transmission, in particular to a low-noise wireless audio transmission system based on a linear amplifier circuit. Background technique [0002] The wireless audio signal transmission system consists of a wireless transmitting system and a wireless receiving system, and is used for long-distance wireless transmission of audio signals. It has been widely used in people's lives and has brought great convenience to people's lives. With the rapid development of modern technology, people have higher and higher requirements for the quality of audio signal transmission, and the audio signal will weaken during the transmission process. Therefore, the audio signal is usually processed at the transmitter, by making up for the signal The attenuation that occurs during transmission improves the hearing effect at the receiving end. However, the existing wireless audio transmission system does not have a good effect on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/02H04B1/04H04R3/00
CPCH04B1/02H04B1/04H04R3/00
Inventor 向勇朱焱麟彭晓丽臧亮
Owner 成都云材智慧数据科技有限公司
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