Inventor
IIJIMA KAZUYUKI
JP18 patents
Patents
18 patentsUS7454330B1Nov 18, 2008
Method and apparatus for speech encoding and decoding by sinusoidal analysis and waveform encoding with phase reproducibility
SONY CORP60 citations98
US6611800B1Aug 26, 2003
Vector quantization method and speech encoding method and apparatus
SONY CORP114 citations98
US5909663AJun 1, 1999
Speech decoding method and apparatus for selecting random noise codevectors as excitation signals for an unvoiced speech frame
SONY CORP94 citations98
US5819212AOct 6, 1998
Voice encoding method and apparatus using modified discrete cosine transform
SONY CORP130 citations98
US6018707AJan 25, 2000
Vector quantization method, speech encoding method and apparatus
SONY CORP83 citations96
US5873059AFeb 16, 1999
Method and apparatus for decoding and changing the pitch of an encoded speech signal
SONY CORP57 citations96
US5828996AOct 27, 1998
Apparatus and method for encoding/decoding a speech signal using adaptively changing codebook vectors
SONY CORP80 citations96
US5752222AMay 12, 1998
Speech decoding method and apparatus
SONY CORP60 citations96
US6532443B1Mar 11, 2003
Reduced length infinite impulse response weighting
SONY CORP20 citations93
US6108621AAug 22, 2000
Speech analysis method and speech encoding method and apparatus
SONY CORP23 citations93
US7139642B2Nov 21, 2006
Robot system and robot apparatus control method
SONY CORP44 citations92
US6243672B1Jun 5, 2001
Speech encoding/decoding method and apparatus using a pitch reliability measure
SONY CORP33 citations92
US6047253AApr 4, 2000
Method and apparatus for encoding/decoding voiced speech based on pitch intensity of input speech signal
SONY CORP30 citations92
US6012023AJan 4, 2000
Pitch detection method and apparatus uses voiced/unvoiced decision in a frame other than the current frame of a speech signal
SONY CORP24 citations92
US5930747AJul 27, 1999
Pitch extraction method and device utilizing autocorrelation of a plurality of frequency bands
SONY CORP23 citations92
US5848387ADec 8, 1998
Perceptual speech coding using prediction residuals, having harmonic magnitude codebook for voiced and waveform codebook for unvoiced frames
SONY CORP45 citations92
US5899966AMay 4, 1999
Speech decoding method and apparatus to control the reproduction speed by changing the number of transform coefficients
SONY CORP19 citations84
US6023671AFeb 8, 2000
Voiced/unvoiced decision using a plurality of sigmoid-transformed parameters for speech coding
SONY CORP12 citations74