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Adaptive speech intelligibility processor

A processor, speech technology, applied in other advantageous fields, can solve the problems of increasing background noise, improving intelligibility, feedback and listening discomfort

Active Publication Date: 2016-05-25
DTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Equalizers and clipping circuits can add background noise by themselves, so don't solve the problem
Increasing the overall level of sound or speaker volume in a mobile phone usually does not significantly improve intelligibility and can cause other problems such as feedback and listener discomfort

Method used

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  • Adaptive speech intelligibility processor
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Experimental program
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Embodiment Construction

[0023] I. Introduction

[0024] Existing speech intelligibility systems attempt to emphasize formants in speech, which may include resonant frequencies produced by a speaker's vocal cords that correspond to specific vowels and loud consonants. These prior systems typically employ filter banks with bandpass filters for emphasizing formants at different fixed frequency bands where formants are expected to occur. The problem with this scheme is that the formant positions may be different for different individuals. In addition, the formant positions of a given individual may also change over time. Therefore, a fixed bandpass filter may emphasize frequencies that differ from the formant frequencies of a given individual, resulting in impaired speech intelligibility.

[0025] This disclosure describes, among other features, systems and methods for adaptively processing speech to improve speech intelligibility. In certain embodiments, these systems and methods are capable of ada...

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Abstract

Systems and methods for adaptively processing speech to improve voice intelligibility are described. These systems and methods can adaptively identify and track formant locations, thereby enabling formants to be emphasized as they change. As a result, these systems and methods can improve near-end intelligibility, even in noisy environments. The systems and methods can be implemented in Voice-over IP (VoIP) applications, telephone and / or video conference applications (including on cellular phones, smart phones, and the like), laptop and tablet communications, and the like. The systems and methods can also enhance non-voiced speech, which can include speech generated without the vocal track, such as transient speech.

Description

[0001] Cross References to Related Applications [0002] This application relies on 35 U.S.C. §119(e) to U.S. Provisional Application No. 61 / 513,298, filed July 29, 2011, entitled "Adaptive Voice Intelligibility Processor," the disclosure of which is hereby incorporated by reference in its entirety. Background technique [0003] Mobile phones are often used in areas that include high background noise. This noise is usually at a level that greatly degrades the intelligibility of voice communications from the mobile phone speaker. In many cases, some communications are lost, or at least partially lost, as heard by the listening party due to higher ambient noise levels masking or distorting the calling party's voice. [0004] Attempts to minimize the loss of intelligibility in the presence of high background noise have involved using equalizers, clipping circuits or simply increasing the volume of the mobile phone. Equalizers and clipping circuits can add background noise by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/003G10L21/0316G10L21/0364G10L19/07G10L25/15
CPCG10L19/07G10L21/003G10L21/0316G10L21/0364G10L25/15
Inventor 鲁迪克阳何星詹姆斯·特雷西
Owner DTS