Title :
Digital prediction with spectral noise shaping
Author :
Bonnet, M. ; Mboup, M. ; Macchi, O.
Author_Institution :
Lab. des Signaux et Syst., ESE, Gif-sur-Yvette, France
Abstract :
In order to avoid the coding noise accumulation in successive transcoders, a new fully digital structure is used where all the filters have quantized inputs. Whereas the coding noise spectrum is flat with the CCITT algorithm, with this new structure it presents a spectral shaping which can be further improved in high-frequency region, by filtering the quantizing noise
Keywords :
encoding; filtering and prediction theory; interference (signal); spectral analysis; CCITT algorithm; coding noise spectrum; digital prediction; quantizing noise; spectral noise shaping; transcoders; Decoding; Digital filters; Equations; Filtering algorithms; Filters; Frequency; Noise shaping; Phase change materials; Pulse modulation; Quantization; Telephony; Transcoding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116250
