@InProceedings{Hannon2010_554,
author = {Patrick Hannon and Mohamed Krini and Gerhard Schmidt and Arthur Wolf},
booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2010},
title = {Reducing the Complexity or the Delay of Adaptive Subband Filtering},
year = {2010},
editor = {Hansjörg Mixdorff},
month = mar,
pages = {158--165},
publisher = {TUDpress, Dresden},
abstract = {In this contribution a method to reduce the computational complexity of adaptive subband
filtering is presented. Alternatively, the approach can be utilized to keep the complexity
as it is in a conventional scheme, but to reduce the delay introduced by non-critical subsampled
filterbanks (meaning to shorten the length of the filterbanks’ prototype filters). This
is achieved by using different subsampling rates for the reference channels on one hand and
for the desired and the output channels on the other hand. Experiments and real-time measurements
performed with systems for acoustic echo cancellation show either a reduction of
complexity of about 30 percent or a delay reduction of about 50 percent (depending on the
optimization objective). At the same time the steady-state error (remaining error power due
to aliasing after convergence) can be kept at the same level.},
isbn = {978-3-941298-85-9},
issn = {0940-6832},
keywords = {Signal Processing},
url = {https://www.essv.de/pdf/2010_158_165.pdf},
}