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Method for identifying speaker based on distributed structure

A technology of speaker confirmation and distributed structure, applied in the field of speaker confirmation, can solve problems such as unsatisfactory

Inactive Publication Date: 2006-12-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this kind of random text speaker confirmation system, the traditional method is to use a specific speaker's speech recognition method, but this method requires sufficient training data, which is often not satisfied in practical application systems

Method used

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  • Method for identifying speaker based on distributed structure
  • Method for identifying speaker based on distributed structure
  • Method for identifying speaker based on distributed structure

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Embodiment Construction

[0013] The present invention will be further introduced below in conjunction with accompanying drawing and embodiment: the method of the present invention is divided into six steps altogether.

[0014] The first step: system front-end feature extraction

[0015] Feature extraction is divided into four parts: noise reduction, waveform processing, spectrum calculation, and blind equalization.

[0016] 1. Noise reduction processing

[0017] The noise reduction module performs second-order noise reduction processing on the input signal on a frame-by-frame basis. The output signal of the first stage is used as the input signal of the second stage.

[0018] a) utilize spectrum estimation module to carry out linear spectrum estimation for input speech frame;

[0019] b) Using the power spectral density mean module to smooth the signal according to the time sequence;

[0020] c) calculating the frequency-domain Wiener filter coefficients by using the spectrum estimation of the cur...

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Abstract

The related speaker verification system (1) based on a distributed structure comprises: a system front end (2) to collect speech sound, extract feature, compress into the bit-flow format and send to (3); a data transmission channel (3) to communicate between (2) and (4); and a system back end (4) to decompress the data into the feature for verification. This invention improves storage level and calculation capacity, can fit the content decision request, and can avoid forgery.

Description

technical field [0001] The present invention relates to a speaker confirmation method, more specifically, it relates to a speaker confirmation method combining speaker recognition and speech recognition. Background technique [0002] Speaker recognition, also known as voiceprint recognition or speaker recognition, is a kind of biometric technology (such as DNA recognition, iris recognition, fingerprint recognition, skull recognition, etc.). The speech parameters of the characteristics, the technology of automatically identifying the identity of the speaker. Different from speech recognition, speaker recognition uses the speaker information in the speech signal, regardless of the meaning of the words in the speech, it emphasizes the personality of the speaker; and the purpose of speech recognition is to identify the speech signal Speech content, regardless of who the speaker is, it emphasizes commonality. [0003] The rise of speaker recognition technology based on telephon...

Claims

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Application Information

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IPC IPC(8): G10L17/00
Inventor 李毅杰谢湘匡镜明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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