Systems, methods, apparatus, and computer-readable media for coherence detection

一种一致性、设备的技术，应用在信号处理领域，能够解决不可直接获得噪声参考值等问题

Inactive Publication Date: 2013-09-11
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in these cases an appropriate noise reference may not be directly available and it may be necessary to derive the noise reference indirectly

Method used

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  • Systems, methods, apparatus, and computer-readable media for coherence detection
  • Systems, methods, apparatus, and computer-readable media for coherence detection
  • Systems, methods, apparatus, and computer-readable media for coherence detection

Examples

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Embodiment Construction

[0116] The real world is full of multiple noise sources, including single point noise sources, which often cross over to multiple sounds, causing reverberation. Background acoustic noise may include many noise signals generated by the general environment and interfering signals generated by other people's background conversations, as well as reflections and reverberations generated from any of the desired sound signal and / or other signals.

[0117]Environmental noise can affect the intelligibility of sensed audio signals (eg, near-end speech signals). Signal processing may be required to distinguish the desired audio signal from background noise. For example, for applications where communications may occur in noisy environments, speech processing methods may be required to distinguish speech signals from background noise and enhance their intelligibility. This processing can be important in many areas of everyday communication since noise is almost always present in real worl...

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Abstract

The invention relates to systems, methods, apparatus, and computer-readable media for coherence detection. Based on phase differences between corresponding frequency components of different channels of a multichannel signal, a measure of directional coherency is calculated. Application of such a measure to voice activity detection and noise reduction are also disclosed.

Description

[0001] Information about divisional applications [0002] This case is a divisional application. The parent case of this case is that the international application number is PCT / US2009 / 062098, the application date is October 26, 2009, the application number is 200980142303.4 after the PCT application entered the Chinese national phase, and the invention name is "system and method for consistency detection" and equipment” patent application. [0003] Claim of priority under 35 U.S.C. §119 [0004] This patent application claims the title of "Motivation for multi mic phase correlation based masking scheme" filed on October 24, 2008 and assigned to the assignee Priority to U.S. Provisional Patent Application No. 61 / 108,447. This patent application also asserts that the patent application filed on June 9, 2009 and assigned to the assignee is entitled "Systems, methods, apparatus, and computer- readable media for coherence detection)" U.S. Provisional Patent Application No. 61...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02
CPCG01S3/8006G01S3/86G10L21/0216G10L2021/02166
Inventor 埃里克·维瑟伊恩·埃尔纳恩·刘
Owner QUALCOMM INC
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