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Multi-path audio collecting system

A technology of acquisition system and multi-channel audio, applied in the field of multi-channel video codec, can solve the problems of increasing hardware cost and unfavorable product miniaturization, and achieve the effect of saving hardware cost and reducing product volume

Inactive Publication Date: 2010-01-27
NETPOSA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The audio collection system in the prior art uses two PCM1801 voice chips to solve the collection of four-way audio signals, which not only increases the hardware cost, but also is not conducive to the miniaturization of the product

Method used

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0021] In order to enable those skilled in the art to better understand and implement the present invention, the TVL320AIC32 and TVP5158 will be briefly introduced below.

[0022] Both TVL320AIC32 and TVP5158 are independent audio codec (Codec, CoderDecoder) chips, and both support the I2S audio hardware transmission protocol.

[0023] I2S (Inter-IC Sound Bus) is a bus standard developed by Philips for audio data transmission b...

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Abstract

The invention provides a multi-path audio collecting system comprising a TVL320AIC32 chip and a TVP5158 chip which are arranged in a cascade connection way, wherein a bit clock record pin of the TVP5158 is connected with a master clock pin of the TVl320AIC32; and a serial data output pin, a bit clock input pin in a cascade connection mode and a word clock pin of the TVl320AIC32 are respectively connected with a serial data input pin, a bit clock input pin in a cascade connection mode and a word clock input pin in a cascade connection mode of the TVP5158. The TVP5158 can process four-path video signals and four-path audio signals, therefore, one-path stereophony (two-path single-channel voice) signals, four-path voice signals and four-path video signals can be processed after the TVL320AIC32 and the TVP5158 are connected in a cascade connection way. The function of the TVP5158 is fully utilized, thereby not only saving the cost of hardware, but also reducing the size of products and enabling the products to develop in a smaller way.

Description

technical field [0001] The invention relates to the technical field of multi-channel video codecs, in particular to a multi-channel audio collection system. Background technique [0002] In security products, video encoders are often used. Among them, the four-way video encoder involves the processing of four-way audio signals and one-way intercom signal. In the prior art, a dedicated audio chip is generally used for processing the audio signals of the four-channel video encoder. The common audio acquisition chip PCM1801 can only complete the acquisition of two-way signals, and generally two PCM1801 chips are used to process four-way audio signals. The audio codec chip TVL320AIC32 can collect and play two channels of mono audio at the same time, and can be used for intercom audio signal processing. [0003] TVL320AIC32 is a highly integrated, low-power, 6-input and 6-output stereo codec voice chip produced by Texas Instruments (TI, Texas Instruments), which integrates hea...

Claims

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Application Information

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IPC IPC(8): H04N7/52
Inventor 马令申
Owner NETPOSA TECH
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