Title :
On memoryless quantization in speech coding
Author :
Kleijn, W. Bastiaan ; Hagen, Roar
Author_Institution :
Dept. of Speech Coding Res., AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
In memoryless quantization, neither the encoder nor the decoder has memory, and quantization noise shaping is not used. We show that, by constraining the parameter dynamics during quantization at the encoder, the performance of speech coders can be enhanced significantly without adding to the delay. The proposed method retains the advantages of memoryless quantization, including channel-error robustness.
Keywords :
memoryless systems; quantisation (signal); spectral analysis; speech coding; channel error robustness; constrained quantization; decoder; encoder; memoryless quantization; parameter dynamics; performance; speech coders; speech coding; Added delay; Bit rate; Decoding; Distortion; Noise robustness; Noise shaping; Quantization; Speech coding; Speech enhancement; Steady-state;
Journal_Title :
Signal Processing Letters, IEEE
