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Systems, methods, apparatus, and computer program products for spectral contrast enhancement

A kind of equipment and spectrum technology, applied in voice analysis, instruments, etc., can solve problems such as difficult to use remote signals reliably and effectively, unsatisfactory communication experience, etc.

Inactive Publication Date: 2011-05-04
QUALCOMM INC
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This noise can cause an unsatisfactory communication experience
Reliable and efficient use of the far-end signal can be difficult unless the far-end signal can be distinguished from background noise

Method used

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  • Systems, methods, apparatus, and computer program products for spectral contrast enhancement
  • Systems, methods, apparatus, and computer program products for spectral contrast enhancement
  • Systems, methods, apparatus, and computer program products for spectral contrast enhancement

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Embodiment Construction

[0143] Noise that affects speech signals in a mobile environment can include various components, such as competing talkers, music, crosstalk, street noise, and / or airport noise. Since the characteristics of this noise are typically non-stationary and close to the frequency signature of the speech signal, it can be difficult to model the noise using traditional single microphone or fixed beamforming type approaches. Single microphone noise reduction techniques typically require significant parameter tuning to achieve optimal performance. For example, in such cases a suitable noise reference may not be directly available and it may be necessary to derive the noise reference indirectly. Therefore, advanced signal processing based on multiple microphones may be required to support voice communications using mobile devices in noisy environments. In one particular example, speech signals are sensed in a noisy environment and speech processing methods are used to separate the speech...

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Abstract

Systems, methods, and apparatus for spectral contrast enhancement of speech signals, based on information from a noise reference that is derived by a spatially selective processing filter from a multichannel sensed audio signal, are disclosed.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This patent application advocates a system, method, device and computer program product (SYSTEMS, METHODS, APPARATUS, AND COMPUTER PROGRAM PRODUCTS FOR IMPROVED SPECTRAL CONTRAST ENHANCEMENT OF SPEECH AUDIO IN A DUAL-MICROPHONE AUDIO DEVICE), which has been assigned to the present assignee of the invention. [0003] References to Co-Pending Patent Applications [0004] This patent application relates to a patent application entitled "Systems, Methods, Devices and Computer Program Products for Enhanced Intelligibility (SYSTEMS, METHODS, APPARATUS, AND) filed on November 24, 2008 by Visser et al. COMPUTER PROGRAM PRODUCTS FOR ENHANCED INTELLIGIBILITY"), co-pending US Patent Application No. 12 / 277,283 (Attorney Docket No. 081737). technical field [0005] The present invention relates to speech processing. Background technique [0006] Many activities that used to take place in a quiet office or home environment are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02
CPCG10L21/0208G10L21/0272
Inventor 杰里米·托曼林鸿春埃里克·维塞
Owner QUALCOMM INC
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