Excitation vector generator, speech coder and speech decoder

Exponential echo and noise reduction in silence intervals

Extracting formant-based source-filter data for coding and...

Factorial packing method and apparatus for information coding

Fast code-vector searching

Fast find fundamental method

Fast frequency-domain pitch estimation

Fast lattice vector quantization

Fast paired method of a 1-D cyclic convolution realization

Fast search method for LSP quantization

Fast start voice recording and playback on a digital device

Fast waveform synchronization for concentration and...

Feature extraction method for a speech signal

Feature-domain concatenative speech synthesis

Feedback-controlled speech processor normalizing peak level over

Filter banked gain control of audio in a noisy environment

Filtering of control parameters in quality and rate control...

Fine granularity scalability speech coding for multi-pulses...

First formant location determination and removal from speech cor

Fixed bit rate speech encoder/decoder