Publications – Details
On Noise Propagation in Closed-Loop Linear Predictive Coding
- Authors:
- Hauke Krüger, Bernd Geiser, and Peter Vary
- Book Title:
- Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
- Venue:
- Florence, Italy
- Event Date:
- 4.-9.5.2014
- Organization:
- IEEE
- Location:
- Piscataway, NJ, USA
- Date:
- May 2014
- Pages:
- 3718–3722
- Language:
- English
Abstract
A new noise production and propagation model for open- and closed loop linear predictive coding (LPC) is proposed in this paper. The model allows to accurately predict the overall SNR even at lower bit rates where the conventional high rate theory fails. Moreover, a source of LPC encoder instabilities is pointed out which is due to the interaction between the quantizer and the (filtered) feedback of the quantization error. The new model is verified by measurements.
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