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Adaptive system identification with tap-assignment in oversampled and critically sampled subbands

Weiss, Stephan and Harteneck, M and Stewart, Robert (1997) Adaptive system identification with tap-assignment in oversampled and critically sampled subbands. In: Proceedings of the 5th international workshop on acoustic echo and noise control. IWAENC, London, pp. 148-151.

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Abstract

Adaptation of the tap profile in subband adaptive system identification problems can further enhance the efficient use of computational resources if implemented on a DSP with an otherwise too tight benchmark performance. Here, we derive a generalization of previous work to extend tap-assignment algorithms to a new class of oversampled filter banks with non-uniform bandwidths and different subsampling ratios. We compare efficiency and adaptation results for this approach to the critically sampled case and a fullband identification with same complexity.