Telephone transmitter respiration noise shielding method

A technology of noise shielding and transmission, applied in speech analysis, instruments, etc., to achieve the effect of improving call quality, great practical value, and strong versatility

Active Publication Date: 2016-03-16
AEROSPACE LIFE SUPPORT IND LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

The breathing noise shielding technology of sending voice must establish a noise feature model according to the noise characteristics; compare the existing noise template features with the input noise signal features, and perform matching processing with the noise library; As a result, speech recognition technology builds its

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  • Telephone transmitter respiration noise shielding method
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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] refer to Figure 1 ~ Figure 2 As shown, a method for shielding speech breathing noise, the method specifically includes the following steps:

[0031] 1) Input noise signal, after steady-state noise removal, speech endpoint detection processing, feature analysis and extraction;

[0032] 2) Establish a noise signal template according to the noise signal characteristics, and form a noise feature library from various noise signal templates;

[0033] 3) Obtain the noisy speech sound signal, and find out the optimal matching noise signal template from the noise feature library;

[0034] 4) compare the input noisy speech signal with the noise signal template feature, identify the noise signal in the noisy speech signal by algorithm, filter and eliminate the noise signal and amplify the speech signal therein;

[0035] 5) Outputting the amplified voi...

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PUM

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Abstract

The invention discloses a telephone transmitter respiration noise shielding method. The method comprises the following steps: according to noise features, a noise feature model is built; after pretreatment such as steady state noise removal and speech endpoint detection is carried out on acquired sound input signals, feature analysis and extraction are carried out, and a noise signal template in need of recognition is built; the already-existing noise template features and the inputted noise signal features are compared, and according to a certain search and pattern matching strategy, the best noise template is found out from a noise feature base to be subjected to matching treatment with the inputted noise; and a recognition result is given through a determination algorithm, and the corresponding noise is filtered. Noise acquired by the telephone transmitter is filtered through a suitable algorithm, the noise is removed, and no noise is heard from the amplified sound.

Description

technical field [0001] The invention relates to the technical field of speech signal processing, in particular to a breathing noise shielding method for speaking. Background technique [0002] At this stage, pilots of trainer planes, fighter jets and other aircraft strongly report that the sound of breathing in the mask is relatively heavy. In a small confined space, the sound of human breathing and the sound of airflow in the air pipe are picked up by the microphone and then amplified by multi-stage noise. , in the case of high load and low air pressure, people's breathing will be aggravated, which will intensify the intensity of the noise. After tower personnel and pilots receive the breathing sound, on the one hand, it will affect the communication quality of the helmet mask, and on the other hand, it will affect the listening quality. A certain degree of oppressive feeling will be caused by the personnel's psychology, which will cause psychological pressure and communica...

Claims

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Application Information

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IPC IPC(8): G10L21/0208G10L25/21G10L25/45
CPCG10L21/0208G10L25/21G10L25/45
Inventor 张艳玲张友刚王峰李珩陈联云邹山坡
Owner AEROSPACE LIFE SUPPORT IND LTD
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