Title :
Transformation and decomposition of the speech signal for coding
Author :
Kleijn, W. Bastiaan ; Haagen, Jesper
Author_Institution :
Inf. Principles Res. Lab., AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
The speech signal is represented by an evolving characteristic waveform. The characteristic waveform is decomposed into a slowly evolving waveform and a rapidly evolving waveform, representing the quasi-periodic and other components of speech, respectively. These two evolving waveforms have fundamentally different quantization requirements. The decomposition allows efficient coding of voiced and unvoiced speech at bit rates between 2 and 8 kb/s.<>
Keywords :
analogue-digital conversion; encoding; speech coding; 2 to 8 kbit/s; characteristic waveform; quantization; speech signal; speech signal decomposition; speech signal transformation; unvoiced speech coding; voiced speech coding; Bandwidth; Bit rate; Data mining; Fourier series; Interpolation; Prototypes; Quantization; Sampling methods; Shape; Speech coding;
Journal_Title :
Signal Processing Letters, IEEE
