Title :
A homomorphic approach to companding
Author :
Lindquist, Claude S. ; Mukherjee, Srijib K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Miami Univ., FL, USA
fDate :
31 Oct-2 Nov 1994
Abstract :
The procedure of first COMpressing and then exPANDing a signal is known as “companding”. In pulse code modulation systems, commonly used in telephone switching networks, samples of an analog speech waveform are encoded as binary words and transmitted. Large dynamic range speech is most efficiently encoded and transmitted if the amplitude of the waveform is compressed before transmission and then expanded at the receiver. The paper describes a homomorphic approach to companding. It reviews and illustrates how these signals are processed and used in speech processing and communication networks
Keywords :
compandors; data compression; digital filters; pulse code modulation; speech coding; telephone networks; PCM systems; analog speech waveform; communication networks; companding; compression; expansion; homomorphic approach; telephone switching networks; Additive noise; Dynamic range; Pressing; Quantization; Signal generators; Signal processing; Signal restoration; Wiener filter;
Conference_Titel :
Signals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-6405-3
DOI :
10.1109/ACSSC.1994.471597
