Title
Reduced Bit-Rate Representation Of Speech Using Mixed Fourier-Walsh Transforms
Abstract
A mixed Fourier-Walsh signal representation is proposed for transform coding. Basis functions from two transforms are used, namely, the discrete Fourier transform (DFT) and the Walsh-Hadamard transform (WHT). An iterative algorithm is used to implement the mixed representation. A finite number of DFT components is used to represent the selective (narrowband) dominant spectrum of speech on a frame-by-frame basis. The whitened (broadband) residual signal is represented using a small number of Walsh components. The parameters of the mixed representation are coded directly by coding the DFT and WHT components. Results are given for frame-by-frame and packet coding at rates ranging from 16 to 9.6 kb/s.
Publication Date
12-1-1988
Publication Title
Conference Record - Asilomar Conference on Circuits, Systems & Computers
Volume
1
Number of Pages
366-370
Document Type
Article; Proceedings Paper
Personal Identifier
scopus
Copyright Status
Unknown
Socpus ID
0024182637 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/0024182637
STARS Citation
Mikhael, Wasfy B. and Spanias, Andreas S., "Reduced Bit-Rate Representation Of Speech Using Mixed Fourier-Walsh Transforms" (1988). Scopus Export 1980s. 298.
https://stars.library.ucf.edu/scopus1980/298