Title :
Wideband speech coding on the basis of multirate filterbank trees
Author :
Pietsch, Ralf Th ; Lacroix, Arild
Author_Institution :
Inst. fur Angewandte Phys., Frankfurt Univ., Germany
Abstract :
For wideband speech coding in telecommunications a quadrature mirror filter (QMF) bank with recursive filters is used. Phase distortions are minimized by structural means and by compensation. A considerable data rate reduction is achieved based if psychoacoustical masking effects are exploited
Keywords :
IIR filters; band-pass filters; digital signal processing chips; filtering theory; quadrature mirror filters; recursive filters; speech coding; speech intelligibility; DSP32C signal processor; data rate reduction; multichannel IIR QMF banks; multirate filterbank trees; phase distortion compensation; psychoacoustical masking effects; quadrature mirror filter bank; recursive filters; telecommunications; wideband speech coding; Bandwidth; Filter bank; Frequency; IIR filters; Nonlinear filters; Phase distortion; Psychology; Signal synthesis; Speech coding; Wideband;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.628140
