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.
| Original language | English (US) |
|---|---|
| Title of host publication | Conference Record - Asilomar Conference on Circuits, Systems & Computers |
| Editors | Ray R. Chen |
| Publisher | Publ by Maple Press, Inc |
| Pages | 366-370 |
| Number of pages | 5 |
| Volume | 1 |
| State | Published - 1988 |
| Externally published | Yes |
| Event | v 1 (of 2) - Pacific Grove, CA, USA Duration: Oct 31 1988 → Nov 2 1988 |
Other
| Other | v 1 (of 2) |
|---|---|
| City | Pacific Grove, CA, USA |
| Period | 10/31/88 → 11/2/88 |
ASJC Scopus subject areas
- Engineering(all)