Title :
Low-Rate Signal Compression Incorporating Decimation
Author_Institution :
Dept. of Electron. & Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim
Abstract :
The paper presents results for PCM- and DPCM-like signal compression schemes that incorporate lowpass -filtering and downsampling prior to the actual encoder, and corresponding upsampling and filtering to reconstruct the signal to the original rate after the decoder. This scheme is suggested by rate-distortion theory for coding signals with monotonically decaying spectra at low rate. The cutoff frequencies are optimized for best performance
Keywords :
decoding; differential pulse code modulation; low-pass filters; rate distortion theory; signal reconstruction; signal sampling; DPCM; PCM; decoder; downsampling; encoder; low-rate signal compression; lowpass-filtering; rate-distortion theory; Cutoff frequency; Decoding; Distortion measurement; Filtering theory; Filters; Frequency domain analysis; Phase change materials; Rate distortion theory; Rate-distortion; Transform coding;
Conference_Titel :
Signal Processing Symposium, 2006. NORSIG 2006. Proceedings of the 7th Nordic
Conference_Location :
Rejkjavik
Print_ISBN :
1-4244-0412-6
Electronic_ISBN :
1-4244-0413-4
DOI :
10.1109/NORSIG.2006.275254
