Method for suppressing transient noise in voice

A transient noise and speech technology, applied in the field of signal processing, can solve the problems of packet loss concealment, undetectable pulse signal, easy introduction of harmonic distortion, etc., and achieve the effect of less noise residue

Inactive Publication Date: 2013-12-11
DALIAN UNIV OF TECH
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[0020](2) Envelope loss hidden
[0023] In the monograph "Advanced Digital Signal Processing and Noise Reduction" (3rd editor. NewYork: Wiley, 2006), S.V. Vaseghi gave a detection and suppression method of impulse noise, the main Disadvantages: (a) Since the accurate model of many one-dimensional signals (such as spee

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  • Method for suppressing transient noise in voice
  • Method for suppressing transient noise in voice

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[0044] The present invention will be further described below in conjunction with the accompanying drawings: the grayscale image can illustrate the technical effect of the present invention, and the grayscale image is specially provided to illustrate the technical effect of the present invention, and also for examiners to better examine the technical effect of the present invention. The grayscale image is Figure 10 to Figure 13 .

[0045] The solution of the present invention mainly includes a gamma-pass frequency cepstral coefficient extraction module, a transient noise detection module, and a speech signal reconstruction module, such as Figure 4 shown. In the transient noise detection stage, the gamma-tone frequency cepstral coefficient (GFCC) is extracted by using the gamma-tone (Gammatone) filter that simulates the auditory model of the human cochlea, and the gamma-pass frequency cepstral coefficient (GFCC) is extracted according to the difference between the gamma-tone ...

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Abstract

The invention discloses a method for suppressing transient noise in voice, and belongs to the technical field of signal processing. The method for suppressing transient noise in voice is characterized by comprising a gamma through frequency cepstrum coefficient extraction module, a transient noise detection module and a voice signal reconstruction module, wherein the input end of the gamma through frequency cepstrum coefficient extraction module receives a voice signal containing noise, the output end of the gamma through frequency cepstrum coefficient extraction module is connected with the input end of the transient noise detection module, the output end of the transient noise detection module is connected with the input end of the voice signal reconstruction module, the input end of the voice signal reconstruction module receives the voice signal containing noise and is also connected with the output end of the transient noise detection module, and the voice signal reconstruction module outputs the voice with noise removed.

Description

technical field [0001] The invention relates to a method for suppressing transient noise in speech, and belongs to the technical field of signal processing. Background technique [0002] Transient noise exists in many applications, such as voice communication terminal equipment such as hearing aids, hands-free components, mobile phones, and video conferencing equipment. The existence of transient noise seriously affects the voice quality, reduces the clarity and intelligibility of the voice signal, and causes auditory fatigue. Transient noise in speech is usually additive noise, also known as transient noise. Transient noise usually has the characteristics of suddenness and impulsiveness in the time domain, and its energy is usually concentrated in a short time domain interval, while its distribution is very wide in the frequency domain. A typical transient signal is usually composed of an initial peak and a short-term oscillation process with a duration of about 10-50ms a...

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Application Information

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IPC IPC(8): G10L21/0208G10L21/003G10L25/78
Inventor 陈喆殷福亮张兆伟
Owner DALIAN UNIV OF TECH
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