| Paper: | AE-P2.2 | ||
| Session: | Echo Cancellation and Active Noise Control | ||
| Time: | Wednesday, May 19, 15:30 - 17:30 | ||
| Presentation: | Poster | ||
| Topic: | Audio and Electroacoustics: Echo Cancellation | ||
| Title: | A COMBINED LPC-BASED SPEECH CODER AND FILTERED-X LMS ALGORITHM FOR ACOUSTIC ECHO CANCELLATION | ||
| Authors: | James Gordy; Carleton University | ||
| Rafik Goubran; Carleton University | |||
| Abstract: | This paper presents a novel acoustic echo canceller structure based on combining the Filtered-X LMS algorithm with an LPC-based speech coder for use in videoconferencing and VoIP. The algorithm updates coefficients using filtered versions of the input and error signals obtained by directly tapping the short-term excitation signal from the speech decoder, and by filtering the error signal with a bank of FIR decorrelation filters constructed from the LPC synthesis filter coefficients. The proposed algorithm was implemented using ITU G.729, and simulation results with 2000-tap room impulse responses show a faster and more constant rate of convergence than NLMS using speech input signals and an average 10 dB greater ERLE observed during convergence. | ||
| Back | |||
Home -||-
Organizing Committee -||-
Technical Committee -||-
Technical Program -||-
Plenaries
Paper Submission -||-
Special Sessions -||-
ITT -||-
Paper Review -||-
Exhibits -||-
Tutorials
Information -||-
Registration -||-
Travel Insurance -||-
Housing -||-
Workshops