US 5,633,984 AGranted

Method and apparatus for speech processing

AssigneeCanon Kabushiki Kaisha

InventorsTakashi Aso, Yasunori Ohora, Takeshi Fujita

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Abstract

An apparatus and method for processing vocal information includes an extractor for extracting a plurality of spectrum information from parameters for vocal information, a vector quantizer for vector-quantizing the extracted spectrum information and for producing a plurality of parameter patterns therefrom, a memory for storing the plurality of parameter patterns so obtained, and a memory for storing positional information indicating the positions at which the plurality of parameter patterns are stored and for storing code information specifying parameter patterns and corresponding to the positional information. The parameter patterns and code information can be used to synthesize speech. Because a small number of parameter patterns are used, only a small memory capacity is needed and efficient processing of vocal information can be performed.

Claims11

Dependent claims

A method for using a memory stored with vocal information generated by the steps of:

providing parameter data of phonemes, the parameter data including power data and spectrum data;
vector-quantizing the spectrum data to produce a plurality of parameter patterns;
storing the plurality of parameter patterns obtained by vector quantization of the spectrum data;
and
storing positional information indicating the positions where the parameter patterns are stored and storing code information specifying the plurality of the parameter patterns corresponding to the positional information;
said method comprising the steps of:
inputting text;
decomposing the inputted text into phonemic series information;
reading out phoneme parameters from stored phoneme data in accordance with the phonemic series information, the phonemes parameters including spectrum information in the form of codes;
and
converting the codes in the phoneme parameters into a pattern by selecting a pattern from the plurality of stored parameter patterns by referring to the stored positional information in accordance with code information of the read out phoneme parameters.

8 more elements

Dependencies are inferred from the claim text.