Generalized Filter-Bank Equalizer for Noise Reduction with Reduced Signal Delay
Löllmann H, Vary P (2005)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2005
Pages Range: 2105-2108
Conference Proceedings Title: Proceedings of European Conference on Speech Communication and Technology (INTERSPEECH)
Event location: Lisbon
URI: http://interspeech2005.l2f.inesc-id.pt/
Abstract
An efficient realization of a low delay filter-bank, termed as generalized filter-bank equalizer (FBE), will be proposed for noise reduction with low signal delay. The FBE is equivalent to a time-domain filter with coefficients adapted in the frequency-domain.
This filter-bank structure ensures perfect signal reconstruction for a variety of spectral transforms with less restrictions than for an analysis-synthesis filter-bank (AS FB). A non-uniform frequency resolution can be achieved by an allpass transformation. In this case, the FBE has not only a lower signal delay than the AS FB, but also a lower algorithmic complexity for most parameter configurations. Another advantage of the FBE is the lower number of required delay elements (memory) compared to the AS FB. The noise reduction achieved by means of the AS FB and the FBE is approximately equal.
Authors with CRIS profile
How to cite
APA:
Löllmann, H., & Vary, P. (2005). Generalized Filter-Bank Equalizer for Noise Reduction with Reduced Signal Delay. In ISCA (Eds.), Proceedings of European Conference on Speech Communication and Technology (INTERSPEECH) (pp. 2105-2108). Lisbon, PT.
MLA:
Löllmann, Heinrich, and Peter Vary. "Generalized Filter-Bank Equalizer for Noise Reduction with Reduced Signal Delay." Proceedings of the European Conference on Speech Communication and Technology (INTERSPEECH), Lisbon Ed. ISCA, 2005. 2105-2108.
BibTeX: Download