Abstract
This paper proposes an encoding method for high-quality, low-delay audio communication that is robust to losses in packetized transmission. Robustness is provided by a multiple description vector quantization (MDVQ) technique that is designed to minimize the mean-squared error (MSE). The key to applying this technique effectively is the use of psycho-acoustically controlled pre- and post-filters that make the mean-squared quantization error perceptually relevant. Experiments show that the MDVQ-based encoder yields better results - in both MSE and subjective audio quality - than simple alternative coders with the same low delay.
Original language | English (US) |
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Pages (from-to) | 1014-1023 |
Number of pages | 10 |
Journal | IEEE Transactions on Speech and Audio Processing |
Volume | 13 |
Issue number | 5 |
DOIs | |
State | Published - Sep 2005 |
Keywords
- Audio coding
- Error robustness
- LMS
- Low delay
- Multiple descriptions
- Predictive coding
- Psycho-acoustics
ASJC Scopus subject areas
- Software
- Acoustics and Ultrasonics
- Computer Vision and Pattern Recognition
- Electrical and Electronic Engineering