Two-Dimensional FIR Filter Design on Wideband Speech Enhancement in Microphone Array

Abstract:

Due to complexity of sound environment, the performance of speech enhancement is degraded greatly based on traditional beam-forming when directivity of arrival of sound and number of sound are not been estimated precisely. In this paper, according to characteristics of handle-communicated equipment, a method on suppression of environmental noise and disturbance is provided. Beam-forming on speech wideband in desired angle is realized by designing a two-dimensional FIR filter which has fan structure in pass-band and wedge-shaped structure in transition-band. The filter can suppress noise and disturbance out of main-lobe desired. The simulations demonstrated that the filter designed is effective.

• Periodical: Applied Mechanics and Materials (Volume 39)
• Pages: 260-266
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.39.260
• Online since: November 2010
• Authors: Xiao Fei Su, Xin Hong Zhang
• Keywords: 2-D FIR Filter, Handle-Communicated Equipment, Microphone Array, Speech Enhancement, Wideband Beamforming

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