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Unsupervised speaker clustering for automatic speaker indexing of recorded audio data

  • US 5,659,662 A
  • Filed: 09/09/1996
  • Issued: 08/19/1997
  • Est. Priority Date: 04/12/1994
  • Status: Expired due to Term
First Claim
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1. A method for unsupervised clustering of audio data segments in an audio data recording containing speech from multiple speakers to segment the audio data recording by speaker, the method comprising the steps of:

  • a) providing a portion of said audio data containing speech from at least all the speakers in said audio data;

    b) forming initial clusters by dividing said portion of said audio data into segments, each segment including a set of data having an order;

    c) computing a pairwise distance between each pair of clusters using a likelihood ratio independent of data order within the segments;

    d) combining two clusters with a minimum pairwise distance into a new cluster; and

    e) repeating said steps b), c), and d) until a number of clusters equal to a number of the multiple speakers is obtained.

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