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J. Johnson, D. Hermann, J. Wdowiak, E. Chau, and H. Sheikhzadeh, "Low-Power Implementation of a Subband Acoustic Echo Canceller for Portable Devices," Paper 7648, (2008 October.). doi: J. Johnson, D. Hermann, J. Wdowiak, E. Chau, and H. Sheikhzadeh, "Low-Power Implementation of a Subband Acoustic Echo Canceller for Portable Devices," Paper 7648, (2008 October.). doi:
Abstract: Portable audio communication devices require increasingly superior audio quality while using minimal power. Devices such as cell phones with speakerphone functionality can generate substantial acoustic echo due to the proximity of the microphone and speaker. To improve the audio quality in such devices, an oversampled subband acoustic echo canceller has been implemented on a miniature low-power dual-core DSP system. This application is comprised of three subband-based algorithms: a Pseudo-Affine Projection adaptive filter, an Ephraim-Malah-based single-microphone noise reduction algorithm and a novel non-linear residual echo suppressor. The system consumes less than 4 mW of power when configured with a 128 ms filter. Real-world tests indicate an echo return loss enhancement of greater than 30 dB for typical input levels.

@article{johnson2008low-power,
author={johnson, julie and hermann, david and wdowiak, john and chau, edward and sheikhzadeh, hamid},
journal={journal of the audio engineering society},
title={low-power implementation of a subband acoustic echo canceller for portable devices},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},} @article{johnson2008low-power,
author={johnson, julie and hermann, david and wdowiak, john and chau, edward and sheikhzadeh, hamid},
journal={journal of the audio engineering society},
title={low-power implementation of a subband acoustic echo canceller for portable devices},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={portable audio communication devices require increasingly superior audio quality while using minimal power. devices such as cell phones with speakerphone functionality can generate substantial acoustic echo due to the proximity of the microphone and speaker. to improve the audio quality in such devices, an oversampled subband acoustic echo canceller has been implemented on a miniature low-power dual-core dsp system. this application is comprised of three subband-based algorithms: a pseudo-affine projection adaptive filter, an ephraim-malah-based single-microphone noise reduction algorithm and a novel non-linear residual echo suppressor. the system consumes less than 4 mw of power when configured with a 128 ms filter. real-world tests indicate an echo return loss enhancement of greater than 30 db for typical input levels.},}

TY - paper
TI - Low-Power Implementation of a Subband Acoustic Echo Canceller for Portable Devices
SP - EP -
AU - Johnson, Julie
AU - Hermann, David
AU - Wdowiak, John
AU - Chau, Edward
AU - Sheikhzadeh, Hamid
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008 TY - paper
TI - Low-Power Implementation of a Subband Acoustic Echo Canceller for Portable Devices
SP - EP -
AU - Johnson, Julie
AU - Hermann, David
AU - Wdowiak, John
AU - Chau, Edward
AU - Sheikhzadeh, Hamid
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008
AB - Portable audio communication devices require increasingly superior audio quality while using minimal power. Devices such as cell phones with speakerphone functionality can generate substantial acoustic echo due to the proximity of the microphone and speaker. To improve the audio quality in such devices, an oversampled subband acoustic echo canceller has been implemented on a miniature low-power dual-core DSP system. This application is comprised of three subband-based algorithms: a Pseudo-Affine Projection adaptive filter, an Ephraim-Malah-based single-microphone noise reduction algorithm and a novel non-linear residual echo suppressor. The system consumes less than 4 mW of power when configured with a 128 ms filter. Real-world tests indicate an echo return loss enhancement of greater than 30 dB for typical input levels.