Audio emission chip, audio receiving chip and wireless microphone system

A technology for audio transmission and audio reception, applied in the field of microelectronics

Inactive Publication Date: 2013-02-13
KTMICRO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But how to transmit the auxiliary information while transmi

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  • Audio emission chip, audio receiving chip and wireless microphone system
  • Audio emission chip, audio receiving chip and wireless microphone system
  • Audio emission chip, audio receiving chip and wireless microphone system

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0058] Such as figure 1 As shown, it is a schematic structural diagram of the first embodiment of the audio transmission chip of the present invention, and the audio transmission chip may include a transmission front-end processing module 11 and a modulator 12 . The transmit front-end processing module 11 and the modulator 12 are integrated in a single integrated circuit, and the integrated circuit can be realized by a complementary metal-oxide-semiconductor (CMOS) process, a BiCMOS process or any other desired process or combination of processes.

[0059] Among them, the transmitting front-end processing module 11 is used to perform dynamic range contraction processing on the audio signal, modulate the auxiliary information, and superimpose the processed audio signal and the modulated auxiliary information to obtain a composite signal, wherein...

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Abstract

The invention relates to an audio emission chip, an audio receiving chip and a wireless microphone system. The audio emission chip comprises an emission front-end processing module for performing dynamic range contraction processing on an audio signal, modulating auxiliary information, and superposing the processed audio signal and the modulated auxiliary information to obtain a composite signal, and a modulator for modulating the composite signal into a radio frequency signal according to a channel selection signal, wherein the frequency of the modulated auxiliary information is different from that of the audio signal; and the emission front-end processing module and the modulator are integrated in a single integrated circuit. The audio emission chip can emit and receive the audio signal and the auxiliary information at the same.

Description

technical field [0001] The invention relates to the field of microelectronics, in particular to an audio transmitting chip, an audio receiving chip and a wireless microphone system. Background technique [0002] When people communicate in large spaces such as conference rooms and stages, the sound energy emitted by natural sound sources (such as speeches, musical instruments, and singing) is limited, and the sound pressure level increases with the increase of the propagation distance. The rapid attenuation, coupled with the influence of environmental noise, makes the sound propagation distance shorter. Therefore, it is necessary to use a microphone to amplify the signal of the sound source, effectively increase the sound pressure level within the sound field range, and increase the sound propagation distance. There are two types of microphones: wired microphones and wireless microphones. Among them, wireless microphones are widely used because they are more convenient to car...

Claims

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Application Information

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IPC IPC(8): H04R1/08H04R3/00
Inventor 李旭芳李振杨培
Owner KTMICRO ELECTRONICS
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