Data processing: speech signal processing – linguistics – language – Speech signal processing – Synthesis
Reexamination Certificate
2008-01-08
2008-01-08
Edouard, Patrick N. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Synthesis
C704S207000, C708S290000
Reexamination Certificate
active
07318034
ABSTRACT:
A voice signal interpolation apparatus is provided which can restore original human voices from human voices in a compressed state while maintaining a high sound quality. When a voice signal representative of a voice to be interpolated is acquired by a voice data input unit1, a pitch deriving unit2filters this voice signal to identify a pitch length from the filtering result. A pitch length fixing unit3makes the voice signal have a constant time length of a section corresponding to a unit pitch, and generates pitch waveform data. A sub-band dividing unit4converts the pitch waveform data into sub-band data representative of a spectrum. A plurality of sub-band data pieces are averaged by an averaging unit5and thereafter a sub-band synthesizing unit6converts the sub-band data pieces into a signal representative of a waveform of the voice by a sub-band synthesizing unit6. The time length of this signal in each section is restored by a pitch restoring unit7and a sound output unit8reproduces the sound represented by the signal.
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Supplementary International Search Report dated Jan. 5, 2006 for Application No. 03730668.5.
International Search Report, Jul. 8, 2003.
Edouard Patrick N.
Kabushiki Kaisha Kenwood
Robinson Eric J.
Robinson Intellecutal Property Law Office, P.C.
Stoffregen Joel
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