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INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING SYSTEM, AND PROGRAM

  • US 20120316880A1
  • Filed: 08/22/2012
  • Published: 12/13/2012
  • Est. Priority Date: 01/31/2011
  • Status: Abandoned Application
First Claim
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1. An information processing apparatus for acquiring, from speech data of a recorded conversation, a key phrase identifying information that is not expressed verbally in the speech data, the apparatus comprising:

  • a database comprising (i) the speech data of the recorded conversation and (ii) sound data used for recognizing phonemes, within the speech data, as at least one word;

    a sound analyzing unit configured to (i) perform sound analysis on the speech data using the sound data and (ii) assign the at least one word to the speech data;

    a prosodic feature deriving unit configured to (i) identify a section surrounded by pauses within a speech spectrum of the speech data and (ii) perform sound analysis on the identified section, wherein (i) said sound analysis generates at least one prosodic feature value for an identified word in the identified section and (ii) the prosodic feature value is an element of the identified word;

    an occurrence-frequency acquiring unit configured to acquire at least one frequency of occurrence of each of the at least one word assigned by the sound analyzing unit within the speech data; and

    a prosodic fluctuation analyzing unit configured to calculate a degree of fluctuation within the speech data for the prosodic feature values of at least one high frequency word, and determine a key phrase based on the degree of fluctuation wherein the at least one high frequency word comprises any word from the at least one word whose frequency of occurrence meets a threshold.

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