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    AUDIO SOURCE PARAMETERIZATION
    2.
    发明公开
    AUDIO SOURCE PARAMETERIZATION 审中-公开

    公开(公告)号：EP3440671A1

    公开(公告)日：2019-02-13

    申请号：EP17717052.9

    申请日：2017-04-05

    申请人： Dolby Laboratories Licensing Corporation

    发明人： WANG, Jun

    IPC分类号： G10L21/0272 ,  G10L21/028 ,  G10L21/0308

    CPC分类号： G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  H04S2400/11 ,  H04S2400/15

    摘要： The present document describes a method (600) for estimating source parameters of audio sources (101) from mix audio signals (102), with. The mix audio signals (102) comprise a plurality of frames. The mix audio signals (102) are representable as a mix audio matrix in a frequency domain and the audio sources (101) are representable as a source matrix in the frequency domain. The method (600) comprises updating (601) an un-mixing matrix (221) which is configured to provide an estimate of the source matrix from the mix audio matrix, based on a mixing matrix (225) which is configured to provide an estimate of the mix audio matrix from the source matrix. Furthermore, the method (600) comprises updating (602) the mixing matrix (225) based on the un-mixing matrix (221) and based on the mix audio signals (102). In addition, the method (600) comprises iterating (603) the updating steps (601, 602) until an overall convergence criteria is met.

    SOUND SOURCE SEPARATING DEVICE AND SOUND SOURCE SEPARATING METHOD
    3.
    发明公开
    SOUND SOURCE SEPARATING DEVICE AND SOUND SOURCE SEPARATING METHOD 审中-公开

    公开(公告)号：EP3333850A4

    公开(公告)日：2018-06-27

    申请号：EP16855097

    申请日：2016-09-29

    申请人： PANASONIC IP MAN CO LTD

    发明人： SUZUKI RYOJI ,  OHASHI HIROMASA ,  TANAKA NAOYA

    IPC分类号： G10L21/0272 ,  G10L21/0208 ,  H04R3/02

    CPC分类号： G10L21/028 ,  G10L21/0272 ,  H04R3/00 ,  H04R3/02 ,  H04R3/14 ,  H04R2499/13

    摘要： A sound source separation device includes a first microphone that picks up a first voice, a second microphone that picks up a second voice, a first crosstalk canceller that removes, from a voice signal of the first microphone, first crosstalk caused when the second voice is picked up by the first microphone, and a second crosstalk canceller that removes, from a voice signal of the second microphone, second crosstalk caused when the first voice is picked up by the second microphone. The first crosstalk canceller uses a voice signal in which the second crosstalk is removed from the voice signal of the second microphone to estimate and calculate a first interference signal indicative of a degree of the first crosstalk, and to remove the calculated first interference signal from the voice signal of the first microphone. The second crosstalk canceller uses a voice signal in which the first crosstalk is removed from the voice signal of the first microphone to estimate and calculate a second interference signal indicative of a degree of the second crosstalk, and to remove the calculated second interference signal from the voice signal of the second microphone.

    A DSP-BASED DEVICE FOR AUDITORY SEGREGATION OF MULTIPLE SOUND INPUTS
    8.
    发明公开
    A DSP-BASED DEVICE FOR AUDITORY SEGREGATION OF MULTIPLE SOUND INPUTS 审中-公开
    基于DSP的设备技术分离几种听觉输入的声音的

    公开(公告)号：EP2446647A1

    公开(公告)日：2012-05-02

    申请号：EP10791629.8

    申请日：2010-06-23

    申请人： Lizard Technology

    发明人： HALLAM, John ,  CHRISTENSEN-DALSGAARD, Jakob

    IPC分类号： H04S1/00

    CPC分类号： H04S7/303 ,  G10L21/028 ,  H04R2400/11

    摘要： There is provided a unique signal processing technique for localizing and characterizing each of a number of differently located acoustic sources. Specifically there is provided a method for auditory segregation of multiple voice inputs comprising the steps of: receiving a plurality of voice input signals from different source locations; filtering said voice input signals with head related transfer functions (HRTF) using a digital signal processor (DSP) thereby assigning the voice input signals to different locations in virtual auditory space; and changing the HRTF filtered voice input signals in two dimensions, wherein pitch is changed and the signal is filtered with different filters emulating vocal tracts of different sizes thereby further segregating the voice input signals from each other.