Invention Grant
- Patent Title: Noise suppressing method and a noise suppressor for applying the noise suppressing method
- Patent Title (中): 噪声抑制方法和噪声抑制方法
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Application No.: US13976180Application Date: 2010-12-29
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Publication No.: US09264804B2Publication Date: 2016-02-16
- Inventor: Per Åhgren , Anders Eriksson , Zohra Yermeche
- Applicant: Per Åhgren , Anders Eriksson , Zohra Yermeche
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Myers Bigel Sibley & Sajovec, P.A.
- International Application: PCT/SE2010/051493 WO 20101229
- International Announcement: WO2012/091643 WO 20120705
- Main IPC: H04B15/00
- IPC: H04B15/00 ; H04R3/00 ; G10K11/16

Abstract:
A method for suppressing noise of a first signal captured via a primary microphone is provided. A primary and a reference microphone are arranged on a communication device to capture noise and intermittent speech. A determination is made whether the first signal comprises non-stationary signal components or substantially stationary noise, and whether the first signal comprises substantially far-field noise in case it was determined that it comprises non-stationary signal components. A noise power spectrum estimate of the first signal is updated with a stationary noise power spectrum estimate if the first signal is considered to comprise substantially stationary noise or a far-field noise power spectrum estimate if the first signal is considered to comprise substantially far-field noise. A frequency response is computed on the basis of the estimated noise power spectrum. Noise from the first signal is suppressed by applying the frequency response on the first signal.
Public/Granted literature
- US20130272540A1 NOISE SUPPRESSING METHOD AND A NOISE SUPPRESSOR FOR APPLYING THE NOISE SUPPRESSING METHOD Public/Granted day:2013-10-17
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