DocumentCode :
754866
Title :
Tree-Encoding of Speech Using the (M, L)-Algorithm and Adaptive Quantization
Author :
Jayant, N.S. ; Christensen, S.A.
Author_Institution :
Bell Labs., Murray Hill, NJ
Volume :
26
Issue :
9
fYear :
1978
fDate :
9/1/1978 12:00:00 AM
Firstpage :
1376
Lastpage :
1379
Abstract :
This paper shows the utility of using adaptive quantizers in the tree-encoding of speech waveforms based on the ( 
) algorithm [1]. Resulting adaptive differential PCM (ADPCM) and adaptive delta modulation (ADM) encoders, with time-invariant prediction networks, can provide useful speech outputs at bit rates in the order of 24 kbits/s; at 16 kbits/s, on the other hand, the encoders exhibit clearly perceptible amounts of quantization noise.
) algorithm [1]. Resulting adaptive differential PCM (ADPCM) and adaptive delta modulation (ADM) encoders, with time-invariant prediction networks, can provide useful speech outputs at bit rates in the order of 24 kbits/s; at 16 kbits/s, on the other hand, the encoders exhibit clearly perceptible amounts of quantization noise.Keywords :
Adaptive coding; DPCM coding/decoding; Delta modulation, coding/decoding; Speech coding; Tree codes; Bit rate; Delta modulation; Encoding; Information rates; Instruments; Phase change materials; Propagation delay; Quantization; Sampling methods; Speech enhancement;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1978.1094232
Filename :
1094232
Link To Document :
