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Aircraft communication platform-based speech enhancement algorithm

A voice enhancement and algorithm technology, applied in the field of electronic information, can solve problems such as unsatisfactory performance requirements, long side tone delay, long processing time, etc., to reduce computational complexity, solve monotone filtering, and achieve good results Effect

Inactive Publication Date: 2019-10-15
TONG FANG ELECTRONICS SCI & TECH
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Conventional speech enhancement processing algorithms have a long processing time, and direct application to the machine communication system will generate a long side tone delay, and will filter out the single-tone signal as a stationary noise, so it cannot meet the system requirements performance requirements

Method used

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  • Aircraft communication platform-based speech enhancement algorithm
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  • Aircraft communication platform-based speech enhancement algorithm

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0045] According to an embodiment of the present invention, a kind of voice enhancement algorithm based on machine-communication platform is provided, comprising the following steps:

[0046] Step 1: Spectrum analysis: divide the noisy speech y(n) into frames, add a window to the lth frame of the noisy speech y(n) and perform short-time Fourier analysis to obtain the noisy speech spectrum Y(k,l):

[0047]

[0048] Among them: L is the frame length; l represents the sequence number of the f...

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Abstract

The invention discloses an aircraft communication platform-based speech enhancement algorithm. According to the aircraft communication platform-based speech enhancement algorithm, the noise-suppression speech enhancement processing algorithm based on short-time spectrum amplitude estimation is adopted. The speech enhancement algorithm comprises the steps of spectrum analysis / synthesis, spectrum amplitude estimation and noise estimation, and short-time logarithm amplitude spectrum-based minimum mean square error estimation. The Bark domain noise estimation algorithm is adopted and the framing windowing mechanism is considered. Therefore, the operation complexity of an enhancement processing scheme is reduced. The problems of single-tone filtering and long sidetone delay are effectively solved, and the practical application effect is good.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a speech enhancement algorithm based on a machine-communication platform. Background technique [0002] The research on speech noise reduction technology is a very important research topic at home and abroad, and a lot of research work has been done, and rich research results have been obtained. And with the rapid development of VLSI and computer technology, many large companies have embedded voice noise reduction functions in their audio chips, which greatly promotes the application and promotion of voice noise reduction functions. However, the voice noise reduction function embedded in the audio chip has the problem of long processing response time, and the amplitude of any input voice signal has a large attenuation after processing, so it cannot adapt to the small side tone delay and single tone of the airborne voice communication system. Attenuation of small p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216G10L21/0232G10L25/45
CPCG10L21/0216G10L21/0232G10L25/45
Inventor 肖诗达李治国高荣根方圆陈娟张海玉
Owner TONG FANG ELECTRONICS SCI & TECH