Invention Grant
- Patent Title: Acoustic source separation systems
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Application No.: US16631990Application Date: 2017-07-19
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Publication No.: US11354536B2Publication Date: 2022-06-07
- Inventor: David Anthony Betts , Mohammad AlDmour
- Applicant: Audiotelligence Limited
- Applicant Address: GB Cambridgeshire
- Assignee: Audiotelligence Limited
- Current Assignee: Audiotelligence Limited
- Current Assignee Address: GB Cambridgeshire
- Agency: Tarolli, Sundheim, Covell & Tummino LLP
- International Application: PCT/GB2017/052124 WO 20170719
- International Announcement: WO2019/016494 WO 20190124
- Main IPC: G06K9/62
- IPC: G06K9/62 ; G10L21/0272 ; H03H21/00 ; H04R1/40 ; H04R3/00 ; H04R25/00 ; G10L21/0216

Abstract:
A method for acoustic source separation comprises inputting acoustic data from a plurality of acoustic sensors, combined from a plurality of acoustic sources, converting the acoustic data to time-frequency domain data comprising time-frequency data frames, and constructing a multichannel filter for the time-frequency data frames to separate signals from the acoustic sources. The constructing comprises determining a set of de-mixing matrices (Wf) to apply to each time-frequency data frame to determine a vector of separated outputs (yft) by modifying each of the de-mixing matrices by a respective gradient value (G;G′) for a frequency dependent upon a gradient of a cost function measuring a separation of the sources by the respective de-mixing matrix. The respective gradient values for each frequency are each calculated from a stochastic selection of the time-frequency data frames.
Public/Granted literature
- US20200167602A1 ACOUSTIC SOURCE SEPARATION SYSTEMS Public/Granted day:2020-05-28
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