Title :
20-kHz frequency-range acoustic echo canceller for high-quality TV conferencing
Author :
Fukui, Masahiro ; Nakagawa, Akira ; Shimauchi, Suehiro ; Haneda, Yoichi ; Kataoka, Akitoshi
Author_Institution :
NTT Cyber Space Labs., NTT Corp., Tokyo
Abstract :
This paper presents an overview of a new sub-band acoustic echo canceller for the 100 Hz-20 kHz frequency band that we have developed. It consists mainly of adaptive digital filter and echo reduction processes to eliminate an echo signal. The experimental results indicate that the new echo canceller suppresses the echo signal at least over 35 dB and delivers natural near-end speech sound even during double-talk situations.
Keywords :
adaptive filters; digital filters; echo suppression; teleconferencing; videotelephony; TV conferencing; acoustic echo canceller; adaptive digital filter; echo reduction; frequency 100 Hz to 20 kHz; videotelephony; Band pass filters; Digital filters; Echo cancellers; Erbium; Frequency; Signal processing; Space technology; Speech analysis; Switches; TV;
Conference_Titel :
Consumer Electronics, 2009. ICCE '09. Digest of Technical Papers International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-4701-5
Electronic_ISBN :
978-1-4244-2559-4
DOI :
10.1109/ICCE.2009.5012205
