Name
Title | ||
|---|---|---|
Selective modeling of the LPC residual during unvoiced frames: White noise or pulse excitation |
Abstract | ||
|---|---|---|
This paper presents a new method of modeling the LPC residual during unvoiced speech for voice coding at 4.8 kb/s. With this method, speech is synthesized using one of three excitation types: periodic pitch pulses, random noise, or multipulse. By using multipulse excitation it is possible to accurately produce speech which is difficult to model using noise and pitch pulses alone [1]. Since multipulse is only used where appropriate, efficient, sub-optimal methods of calculating the pulse amplitudes and positions are adequate, simplifying the implementation into a real-time system. The synthetic speech may be coded at 4.8 kb/s since multipulse, used only where appropriate, suffers little quality loss when quantized. A method of determining which excitation type is to be used is discussed. Formal listening test results are also presented. |
Year | DOI | Venue |
|---|---|---|
1986 | 10.1109/ICASSP.1986.1168772 | Acoustics, Speech, and Signal Processing, IEEE International Conference ICASSP '86. |
Keywords | DocType | Volume |
acoustic noise,gaussian noise,linear predictive coding,white noise,speech coding,speech synthesis,real time systems | Conference | 11 |
Citations | PageRank | References |
2 | 2.04 | 0 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Thomson, D. | 1 | 2 | 2.04 |
| Prezas, D. | 2 | 2 | 2.04 |