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| Paper: | AE-P2.12 |
| 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 MEMORY-EFFICIENT ALGORITHM FOR NETWORK ECHO CANCELLATION IN VOIP SYSTEMS |
| Authors: |
Anil Ubale; Intel Corporation | | |
| Abstract: |
In recent years, considerable interest has been focused on voice-over-IP (VoIP) systems. VoIP media gateways implement voice and packet processing for hundreds of channels. One of the limiting factors in such high channel-density voice processing applications is the memory requirement. A substantial amount of memory is used to store the coefficients of network echo canceller. This paper describes a new algorithm that reduces the memory requirements for echo cancellation by a factor of 2 to 4. When the new memory reduction algorithm is combined with standard NLMS, it also provides faster convergence rate, and better echo path tracking than the standard NLMS algorithm. |
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