Title

Active Speech Control using Wave-Domain Processing with a Linear Wall of Dipole Secondary Sources

RIS ID

111046

Publication Details

J. Donley, C. Ritz & W. Kleijn, "Active Speech Control using Wave-Domain Processing with a Linear Wall of Dipole Secondary Sources," in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017), 2017, pp. 456-460.

Abstract

In this paper, we investigate the effects of compensating for wave-domain filtering delay in an active speech control system. An active control system utilising wave-domain processed basis functions is evaluated for a linear array of dipole secondary sources. The target control soundfield is matched in a least squares sense using orthogonal wavefields to a predicted future target soundfield. Filtering is implemented using a block-based short-time signal processing approach which induces an inherent delay. We present an autoregressive method for predictively compensating for the filter delay. An approach to block-length choice that maximises the soundfield control is proposed for a trade-off between soundfield reproduction accuracy and prediction accuracy. Results show that block-length choice has a significant effect on the active suppression of speech.

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Link to publisher version (DOI)

http://dx.doi.org/10.1109/ICASSP.2017.7952197