Pitch prediction filters in speech coding
- 1 April 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Acoustics, Speech, and Signal Processing
- Vol. 37 (4) , 467-478
- https://doi.org/10.1109/29.17527
Abstract
Prediction error filters which combine short-time prediction (formant prediction) with long-time prediction (pitch prediction) in a cascade connection are examined. A number of different solution methods (autocorrelation, covariance, Burg) and implementations (transversal and lattice) are considered. It is found that the F-P cascade (formant filter before the pitch filter) outperforms the P-F cascade for the both transversal- and lattice-structured predictors. The performances of the transversal and lattice forms are similar. The solution method that yields a transversal structure requires a stability test and, if necessary, a consequent stabilization. The two cascade forms are implemented as part of an APC coder to evaluate their relative subjective performance.Keywords
This publication has 10 references indexed in Scilit:
- Improving performance of multi-pulse LPC coders at low bit ratesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Code-excited linear prediction(CELP): High-quality speech at very low bit ratesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Stability and performance analysis of pitch filters in speech codersIEEE Transactions on Acoustics, Speech, and Signal Processing, 1987
- Two-dimensional linear prediction: Autocorrelation arrays, minimum-phase prediction error filters, and reflection coefficient arraysIEEE Transactions on Acoustics, Speech, and Signal Processing, 1980
- Predictive coding of speech signals and subjective error criteriaIEEE Transactions on Acoustics, Speech, and Signal Processing, 1979
- A simple proof of stability for all-pole linear prediction modelsProceedings of the IEEE, 1979
- Speech CodingIEEE Transactions on Communications, 1979
- Adaptive noise spectral shaping and entropy coding in predictive coding of speechIEEE Transactions on Acoustics, Speech, and Signal Processing, 1979
- Autoregressive estimation using residual energy ratios (Corresp.)IEEE Transactions on Information Theory, 1978
- Stable and efficient lattice methods for linear predictionIEEE Transactions on Acoustics, Speech, and Signal Processing, 1977