Title :
Results on reverse water-filling, SNR, and log-spectral error in codebook-based coding
Abstract :
This paper identifies optimum levels of reverse water-filling for codebook-based coding of noise and speech signals. We find that there is little to be gained from optimizing an effective rate parameter. We identify trade-offs between SNR and log-spectral error. We show that the use of a gain factor compares favorably with reverse water-filling in some situations
Keywords :
Gaussian noise; least mean squares methods; spectral analysis; speech coding; white noise; SNR; codebook constrained MMSE coding; codebook-based coding; colored Gaussian noise; effective rate parameter; gain factor; log-spectral error; noise coding; optimum levels; reverse water-filling; speech coding; speech signals; white Gaussian noise; Bit rate; Density measurement; Distortion measurement; Noise level; Signal processing; Signal to noise ratio; Speech coding; Speech enhancement; Subspace constraints; Vectors;
Conference_Titel :
Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on
Conference_Location :
Delavan, WI
Print_ISBN :
0-7803-6416-3
DOI :
10.1109/SCFT.2000.878387
