Apparatus and method of coding and decoding vocal sound data bas

Details Apparatus and method of coding and decoding vocal sound data bas Apparatus and method of coding and decoding vocal sound data bas

1996-09-25

1998-10-27

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704201, 704500, G10L 900

Patent

active

058289933

ABSTRACT:
Sequential digital vocal sound data are orthogonal-transformed per predetermined number of the data to obtain power spectrum data. The power spectrum data are converted into a data conversion form that a feature corresponding to a phoneme of the vocal sound data is extracted. Converted data thus converted into the data conversion form are compared with reference data patterns related to the feature corresponding to the data conversion form to obtain correlation data between the converted data and the reference data. Pitches are extracted in a frequency direction based on the power spectrum data or the converted data. Power values are extracted based on the vocal sound data or the power spectrum data. The correlation data, pitches, and power values are then coded, sequentially. The coded data are decoded and signals related to each phoneme are formed based on the decoded power values and pitches. The signals are synthesizing with each other to reproduce vocal sound signals.

REFERENCES:
patent: 4811396 (1989-03-01), Yatsuzuka
patent: 5737716 (1998-04-01), Bergstrom et al.

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