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STM32-based speech acquisition coding storage device

A voice collection and storage device technology, applied to program control, instruments, control/regulation systems in sequence/logic controllers, etc., can solve the problems of poor recording pertinence and low reference value, and achieve high economical effects

Inactive Publication Date: 2015-11-18
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It aims to solve the problems of many invalid databases, poor pertinence of recordings and low reference value due to the large number of existing recording devices

Method used

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  • STM32-based speech acquisition coding storage device

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Embodiment Construction

[0018] The technical solution of the present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0019] The present invention aims at problems such as the inaccuracy of recording that are not solved from the quantization device microphone of the recording equipment and the recording circuit due to the wide variety of recording equipment in my country, and the influence of the environment and speaker characteristics in the recording process, and provides a method based on STM32's voice acquisition, encoding and storage device, by extracting voice feature parameters, is beneficial to analyze the inherent features.

[0020] Such as figure 1 As shown, the STM32-based speech collection and coding storage device of the present invention includes a mic access interface, a main control module and a speech collection and coding module connected thereto, a speech storage module and a communication module. The mic access interface is...

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Abstract

The invention relates to an STM32-based speech acquisition coding storage device. The device comprises a mic access interface, a main control module, a speech acquisition coding module, a storage module and a communication module, wherein the speech acquisition coding module, the storage module and the communication module are connected with the main control module. The main control module uses an STM32 series microcontroller. The speech acquisition coding module uses a VS1003B speech acquisition coding chip. The speech storage module carries out storage through an SDIO interface and a U disk interface. The communication module carries out communication through a wireless wifi module and an Ethernet port. According to the invention, the speech acquisition coding storage device is designed; characteristic parameters of a recording device are extracted; a speech database is built; speech evidence can be conveniently realized; untrue speech caused by speech tampering is prevented; and the reliability and the accuracy of speech evidence are improved.

Description

technical field [0001] The invention relates to an STM32-based voice collection, coding and storage device, which belongs to the technical field of voice signal processing. Background technique [0002] With the increasing use of digital media technology in daily life, especially the rapid popularization of digital recording technology and the emergence of a large number of digital recording devices such as smartphones and digital recorders at this stage, more and more cases related to digital audio have resulted. Therefore, new multimedia analysis techniques are needed to provide assistance for forensic analysis. In fact, audio forensics is a very important method of forensics in judicial identification. When audio files are used as court evidence, this requires them to be reliable and trustworthy, that is to say, the integrity, source, whether it has been tampered with, what kind of recording equipment recording information, etc. of the audio files need to be accurately d...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/0423G05B2219/25314
Inventor 姜海涛武欣婷童茜雯曹柯杰
Owner NANJING INST OF TECH