Implementation of a 5.0 kb/s. coder for vehicular applications. II. Acoustic echo and noise canceller

• Published in: Proceedings of 27th Asilomar Conference on Signals, Systems and Computers pp. 776 - 780 vol.1
• Main Authors: Arkan, E., Abut, H., Pelling, S., Harris, F.J., Marques, G.C.
• Format: Conference Proceeding
• Language: English
• Published: IEEE Comput. Soc. Press 1993
• Subjects: Acoustic noise; Adaptive filters; Automobiles; Engines; Microphone arrays; Noise cancellation; Research and development; Roads; Speech coding; Working environment noise
• ISBN: 9780818641206; 0818641207
• ISSN: 1058-6393; 2576-2303
• DOI: 10.1109/ACSSC.1993.342627

Presents the results of research on the real-time implementation of a digital echo and vehicular noise canceller on a TMS320C50/51 platform to comply with the ongoing efforts on half-rate coder implementation at various industrial and academic research and development centers. The proposed echo and noise cancellers are expected to be interfaced with a speech coding system for use in an automobile environment subject to both road engine and wind noises and acoustic echos generated inside a vehicle. The echo canceller based on adaptive filtering techniques for automobile acoustics has been fully implemented using a DSP board equipped with a Texas instruments TMS320C50/51 processor and it is hosted on a PC. The authors have also completed the simulations for road engine, and wind noise cancellation based on beamforming and adaptive filtering techniques for a microphone array system.< >