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Methods for generating pitch and duration contours in a text to speech system

  • US 6,101,470 A
  • Filed: 05/26/1998
  • Issued: 08/08/2000
  • Est. Priority Date: 05/26/1998
  • Status: Expired due to Term
First Claim
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1. A method for generating pitch contours in a text to speech (TtS) system, the system converting input text into an output acoustic signal simulating natural speech, the method comprising the steps of:

  • (a) storing a plurality of associated stress and pitch level pairs, each of the plurality of pairs including a lexical stress level and a pitch level;

    (b) determining lexical stress levels of the input text;

    (c) comparing the stress levels of the input text to the stored stress levels of the plurality of associated stress and pitch levels pairs to find the stored stress levels closest to the stress levels of the input text; and

    (d) copying the pitch levels associated with the closest stress levels of the stress and pitch level pairs to generate the pitch contours of the input text.

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