Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

Very Low Delay and High Quality Coding of 20 Hz -15 Khz Speech at 64 Kbit/S

C. Murgia (1), Gang Feng (1), C. Quinquis (2), A. Le Guyader (2)

(1) Institut de la Communication Parlee, URA CNRS n° 368, INPG/ENSERG, Université Stendhal, Grenoble, France
(2) CNET Lannion A, TSS/CMC, Lannion, France

In this paper, we propose an algorithm for coding 20 Hz -15 kHz signals at 64 kbit/s with a very low delay (frame 0.16 ms). To achieve a quality near to transparency, we propose to adapt the Low-Delay CELP coder [1] to the 15 kHz bandwidth and we suggest a new noise shaping method coming from a psycho-acoustic model. In this way we take advantage of linear predictive coding and masking properties of the human hearing system.

Full Paper

Bibliographic reference.  Murgia, C. / Feng, Gang / Quinquis, C. / Guyader, A. Le (1995): "Very low delay and high quality coding of 20 hz -15 khz speech at 64 kbit/S", In EUROSPEECH-1995, 37-40.