| Publisher | Institute of Electrical and Electronics Engineers | ||
|---|---|---|---|
| Format | 199.3KB PDF | Date added | 17 May 2004 |
| Topics | Mobile - Wireless Communications, Bluetooth | ||
| Downloads | 305 | ||
Integrating voice-processing algorithms into headsets is a challenging task due to size and power constraints. As a result of the small size of these headsets, acoustic leakage between the closely located speaker and microphone is a common problem. To address this problem, an oversampled sub-band adaptive acoustic echo cancellation system is proposed and implemented on an ultra-low resource DSP system. The echo cancellation algorithm is integrated with two voice activity detectors and double-talk detection logic to provide a fully functional system. Tests on a Bluetooth headset show an echo return loss enhancement of about 15 dB for a typical headset signal level.
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