NDLI: On the limitations of narrow 2D fan filters speech processing

Content Provider	IEEE Xplore Digital Library
Author	Khademi, L. Bruton, L.T.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada (Khademi, L.; Bruton, L.T.)
Abstract	Two-dimensional (2D) discrete-domain FIR narrow fan filters may be used for the selective filtering of sampled broadband 2D plane waves (PWs) on the basis of their directions of arrival (DOAs). We investigate the performance limitations of such filters for the selective filtering of 2D space-time PWs that propagate broadband speech. Employing both speech and synthetic speech, we show that, for a given computational complexity, the signal distortion of the passband speech signal is strongly dependent on the low-frequency part of the speech spectrum. It is shown that spatial undersampling is a particularly effective way of reducing computational complexity, as well as the number of sensors, and that the required speech signal may be fully recovered from a column of the 2D output image.
Starting Page	301
Ending Page	304
File Size	223466
Page Count	4
File Format	PDF
ISBN	0780379780
DOI	10.1109/PACRIM.2003.1235777
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-08-28
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech processing Finite impulse response filter Passband Speech enhancement Computational complexity Band pass filters Filtering Frequency response Electronic mail Distortion
Content Type	Text
Resource Type	Article

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