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Voice signal acquisition system based on DSP

A voice signal and acquisition system technology, applied in general control systems, control/adjustment systems, instruments, etc., can solve problems such as low acquisition accuracy, poor anti-interference ability, and poor stability

Inactive Publication Date: 2020-11-06
SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional voice signal acquisition systems have poor anti-interference ability, low acquisition accuracy, and poor stability. Therefore, for some occasions that require high-precision acquisition, these systems obviously cannot meet the application requirements

Method used

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  • Voice signal acquisition system based on DSP
  • Voice signal acquisition system based on DSP
  • Voice signal acquisition system based on DSP

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0025] This embodiment describes in detail the high-precision voice signal acquisition system based on TMS320C6713 and ADS1278.

[0026] 1. System hardware design

[0027] The voice signal acquisition system is mainly composed of power supply circuit, differential amplifier circuit, A / D conversion circuit, DSP processing circuit, FLASH storage circuit, serial port expansion circuit, such as figure 1 shown. The system mainly completes the functions of 8-channel voice signal acquisition, signal conditioning, A / D conversion, voice signal storage, and serial communication. The working process of the system is as follows: After the 8-channel voice signal is conditioned by the differential amplifie...

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Abstract

The invention discloses a voice signal acquisition system based on a DSP. The voice signal acquisition system comprises a differential amplification circuit, an A / D conversion circuit, a DSP processing circuit and a serial port expansion circuit. After eight paths of voice signals are conditioned by the differential amplification circuit, AD conversion is carried out by the A / D conversion circuit,and converted data enter the DSP processing circuit to be processed and then are uploaded to an upper computer through the serial port expansion circuit and an RS232 interface. According to the system, eight paths of voice signals are synchronously acquired and decoded in real time by utilizing the McASP and EDMA technologies in the DSP. Compared with a common data acquisition system, the systemis high in acquisition precision, good in linearity, stable in work, high in signal-to-noise ratio, clear in tone quality, high in sound reduction degree and high in practicability, and is particularly suitable for data acquisition in severe environments such as high temperature, low temperature and salt mist.

Description

technical field [0001] The invention relates to a voice signal collection system, in particular to a DSP-based voice signal collection system. Background technique [0002] Language is a unique function of human beings, speech is the acoustic expression of language, and the transmission of information through speech is the most effective and convenient form of information exchange for human beings. Speech signal processing is an emerging discipline that studies the processing of speech signals with digital signal processing technology and phonetic knowledge, and is one of the core technologies in the fastest-growing information science research field. With the development of digital signal processing technology, voice signal processing technology has been continuously improved. In the process of speech signal processing, in order to realize the accuracy and real-time performance of speech signal processing technology, speech signal acquisition and error-free storage become ...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 李贵娇鲁争艳李金宝房建峰宋宁
Owner SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
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