Invention Grant
- Patent Title: Methods and systems for blind dereverberation
- Patent Title (中): 盲目混响的方法和系统
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Application No.: US12484686Application Date: 2009-06-15
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Publication No.: US08218780B2Publication Date: 2012-07-10
- Inventor: Thomas Anthony Baran , Bowon Lee , Ronald W. Schafer , Majid Fozunbal
- Applicant: Thomas Anthony Baran , Bowon Lee , Ronald W. Schafer , Majid Fozunbal
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: H04B3/20
- IPC: H04B3/20 ; H03G3/00

Abstract:
Various embodiments of the present invention are directed to methods for dereverberation of audio generated in a room. In one aspect, a method for dereverberating reverberant digital signals comprises transforming a reverberant digital signal from the time domain into Fourier domain signals using a computing device, each Fourier domain signal corresponding to a subband. For each subband of the Fourier domain signal, the method computes autoregressive model coefficients of the reverberation with the current and previous magnitudes of the Fourier digital signal, and inverse filters the magnitude of the Fourier domain signal using the computing device, based on the autoregressive model coefficients and previous magnitudes of the Fourier digital signal. The method includes inverse transforming the Fourier domain signals with filtered magnitudes into an approximate dereverberated digital signal.
Public/Granted literature
- US20100316228A1 METHODS AND SYSTEMS FOR BLIND DEREVERBERATION Public/Granted day:2010-12-16
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