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Speech synthesis device and method

  • US 10,217,452 B2
  • Filed: 04/19/2017
  • Issued: 02/26/2019
  • Est. Priority Date: 10/20/2014
  • Status: Active Grant
First Claim
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1. A speech synthesis device comprising:

  • a reception section that receives a voice signal of an utterance;

    a pitch detection section that, based on the voice signal received by the reception section, detects a pitch of a representative portion which is a part of the utterance;

    a response acquisition section that acquires voice data of a response to the utterance;

    a response pitch acquisition section that acquires a pitch based on the voice data of the response acquired by the response acquisition section;

    a pitch shift amount determination section that determines a pitch shift amount for shifting the pitch acquired by the response pitch acquisition section to a target pitch having a particular relationship to the pitch of the representative portion; and

    a response synthesis section that synthesizes voice of the response based on the voice data of the response, the response synthesis section being configured to shift, in accordance with the shift amount, a pitch of the voice of the response to be synthesized.

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