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Method and device for processing speech signals using a headset pair of microphones

A voice signal and microphone technology, applied in voice analysis, instruments, etc., can solve the problems of reducing network capacity, terminal battery life, and detrimental intelligence

Active Publication Date: 2016-03-09
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise can reduce the signal-to-noise ratio (SNR) of the signal being transmitted to and received from the far end, compromising intelligence and reducing network capacity and terminal battery life

Method used

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  • Method and device for processing speech signals using a headset pair of microphones
  • Method and device for processing speech signals using a headset pair of microphones
  • Method and device for processing speech signals using a headset pair of microphones

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Embodiment Construction

[0059] Active Noise Cancellation (ANC, also known as Active Noise Reduction) is a technique for effectively reducing ambient noise by generating a waveform that is the inverse of the noise wave (eg, with the same level and reversed phase), also known as It is an "anti-phase" or "anti-noise" waveform. ANC systems generally use one or more microphones to pick up an external noise reference signal, generate an anti-noise waveform from the noise reference signal, and reproduce the anti-noise waveform through one or more speakers. This anti-noise waveform interferes destructively with the original noise wave to reduce the level of noise reaching the user's ears.

[0060] Effective noise cancellation techniques can be applied to sound reproduction devices (eg, headphones) and personal communication devices (eg, cellular phones) to reduce noise from the surrounding environment. In these applications, the use of ANC technology can reduce the level of background noise reaching the ear...

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Abstract

A noise canceling headset for voice communication contains a microphone and a voice microphone located at each ear of the user. The headset shares the use of the ear microphone on both transmit and receive paths to improve the signal-to-noise ratio.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This patent application asserts Provisional Application No. 61 / 346,841, filed May 20, 2010, entitled "Multi-Microphone Configurations in Noise Reduction / Cancellation and Speech Enhancement Systems," and Provisional Application No. 61 / 346,841, filed May 20, 2010 Priority to Provisional Application No. 61 / 356,539, filed on March 18, entitled "Noise Canceling Headset with Multiple Microphone Array Configurations," is assigned to the present assignee. technical field [0003] The invention relates to the processing of speech signals. Background technique [0004] Many activities that used to take place in a quiet office or home environment are now performed in acoustically variable situations such as cars, streets or coffee shops. For example, a person may wish to communicate with another person using a voice communication channel. The channel may be provided, for example, by a mobile wireless handset or headset, walkie-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L25/78
CPCG10L25/78G10L2021/02168G10L21/02
Inventor 安德烈·古斯塔沃·普奇·舍维茨瓦埃里克·维瑟迪内希·拉马克里希南伊恩·埃尔纳恩·刘李仁布赖恩·莫迈尔朴勋真路易斯·D·奥利韦拉
Owner QUALCOMM INC