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APPARATUS, SYSTEMS AND METHODS FOR PROVIDING CLOUD BASED BLIND SOURCE SEPARATION SERVICES

  • US 20170178664A1
  • Filed: 03/26/2015
  • Published: 06/22/2017
  • Est. Priority Date: 04/11/2014
  • Status: Abandoned Application
First Claim
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1. A method for processing at least one signal acquired using an acoustic sensor, the at least one signal having contributions from a plurality of acoustic sources, the method comprising using one or more processors performing steps of:

  • accessing an indication of a current block size, the current block size defining a size of a portion of the at least one signal to be analyzed to separate from the at least one signal one or more contributions from a first acoustic source of the plurality of acoustic sources;

    analyzing a first portion of the at least one signal, the first portion being of the current block size, by;

    computing one or more first characteristics from data of the first portion, andusing the computed one or more first characteristics, or derivatives thereof, in performing iterations of a nonnegative tensor factorization (NTF) model for the plurality of acoustic sources for the data of the first portion to separate, from at least the first portion of the at least one acquired signal, one or more first contributions from the first acoustic source; and

    analyzing a second portion of the at least one signal, the second portion being of the current block size and being temporaly shifted with respect to the first portion, by;

    computing one or more second characteristics from data of the second portion, andusing the computed one or more second characteristics, or derivatives thereof, in performing iterations of the NTF model for the data of the second portion to separate, from at least the second portion of the at least one acquired signal, one or more second contributions from the first acoustic source.

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