Abstract
In this paper, we propose some new modeling techniques that provide a more synergistic approach to multistage time-domain speech compression. In particular, we propose a new error criterion for determining all-pole filters, and a unique method for jointly coding the pulse information in excitation vectors. The new error criterion for determining all-pole filters is based upon minimizing the sum of the residual signal's absolute values raised to a power less than one. It is shown to be a desirable cost function for yielding residual signals that are more sparse, and consequently better suited for multistage compression than Linear Prediction residuals. Statistical reasons supporting the new criterion are also provided. Furthermore, exploiting the properties of, and the relationship between, the Linear Prediction and Minimum Variance spectra, we propose a novel parameter set for jointly coding the excitation vector's pulse position, sign, and gain information.
| Original language | English (US) |
|---|---|
| Title of host publication | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
| Publisher | IEEE |
| Pages | 369-372 |
| Number of pages | 4 |
| Volume | 1 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. Part 1 (of 6) - Seattler, WA, USA Duration: May 12 1998 → May 15 1998 |
Other
| Other | Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. Part 1 (of 6) |
|---|---|
| City | Seattler, WA, USA |
| Period | 5/12/98 → 5/15/98 |
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ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering
- Acoustics and Ultrasonics
- Software
Cite this
Towards a synergistic multistage speech coder. / Murthi, Manohar; Rao, Bhaskar D.
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 1 IEEE, 1998. p. 369-372.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Towards a synergistic multistage speech coder
AU - Murthi, Manohar
AU - Rao, Bhaskar D.
PY - 1998
Y1 - 1998
N2 - In this paper, we propose some new modeling techniques that provide a more synergistic approach to multistage time-domain speech compression. In particular, we propose a new error criterion for determining all-pole filters, and a unique method for jointly coding the pulse information in excitation vectors. The new error criterion for determining all-pole filters is based upon minimizing the sum of the residual signal's absolute values raised to a power less than one. It is shown to be a desirable cost function for yielding residual signals that are more sparse, and consequently better suited for multistage compression than Linear Prediction residuals. Statistical reasons supporting the new criterion are also provided. Furthermore, exploiting the properties of, and the relationship between, the Linear Prediction and Minimum Variance spectra, we propose a novel parameter set for jointly coding the excitation vector's pulse position, sign, and gain information.
AB - In this paper, we propose some new modeling techniques that provide a more synergistic approach to multistage time-domain speech compression. In particular, we propose a new error criterion for determining all-pole filters, and a unique method for jointly coding the pulse information in excitation vectors. The new error criterion for determining all-pole filters is based upon minimizing the sum of the residual signal's absolute values raised to a power less than one. It is shown to be a desirable cost function for yielding residual signals that are more sparse, and consequently better suited for multistage compression than Linear Prediction residuals. Statistical reasons supporting the new criterion are also provided. Furthermore, exploiting the properties of, and the relationship between, the Linear Prediction and Minimum Variance spectra, we propose a novel parameter set for jointly coding the excitation vector's pulse position, sign, and gain information.
UR - http://www.scopus.com/inward/record.url?scp=0031645439&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031645439&partnerID=8YFLogxK
M3 - Conference contribution
VL - 1
SP - 369
EP - 372
BT - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
PB - IEEE
ER -