Skip to main content
placeholder image

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

Conference Paper


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.

Authors


  •   Donley, Jacob (external author)
  •   Ritz, Christian H.
  •   Kleijn, Bastiaan (Willem) (external author)

Publication Date


  • 2017

Citation


  • 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.

Scopus Eid


  • 2-s2.0-85023756774

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/318

Start Page


  • 456

End Page


  • 460

Place Of Publication


  • United States

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.

Authors


  •   Donley, Jacob (external author)
  •   Ritz, Christian H.
  •   Kleijn, Bastiaan (Willem) (external author)

Publication Date


  • 2017

Citation


  • 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.

Scopus Eid


  • 2-s2.0-85023756774

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/318

Start Page


  • 456

End Page


  • 460

Place Of Publication


  • United States