Efficient subband encoding of magnitude/phase spectra

Author

Soman, A.K. ; Vaidyanathan, P.P.

Author_Institution

Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA

fYear

1993

fDate

3-6 May 1993

Firstpage

387

Abstract

For certain types of signals, perfect reconstruction is not essential. It is sufficient to have knowledge of either the magnitude or the phase spectrum only. Filter banks which introduce phase distortion are used for encoding speech signals. These schemes have an inherent redundancy; i.e., the samples are still transmitted at the sampling rate. It is shown how magnitude or phase information can be encoded at only half the sampling rate in a filter bank formalism

Keywords

discrete Fourier transforms; image coding; speech coding; DFT; filter bank formalism; image signals; magnitude spectrum; phase distortion; phase spectrum; redundancy; sampling rate; speech signals; subband encoding; Cepstrum; Encoding; Filter bank; Image coding; Image reconstruction; Image sampling; Phase distortion; Redundancy; Speech coding; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-1281-3

Type

conf

DOI

10.1109/ISCAS.1993.393739

Filename

393739

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2604670