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Dual Microphone Beamforming Algorithm for Acoustic Signals

by Pallavi Agrawal, Madhu Shandilya
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 129 - Number 11
Year of Publication: 2015
Authors: Pallavi Agrawal, Madhu Shandilya
10.5120/ijca2015907013

Pallavi Agrawal, Madhu Shandilya . Dual Microphone Beamforming Algorithm for Acoustic Signals. International Journal of Computer Applications. 129, 11 ( November 2015), 33-37. DOI=10.5120/ijca2015907013

@article{ 10.5120/ijca2015907013,
author = { Pallavi Agrawal, Madhu Shandilya },
title = { Dual Microphone Beamforming Algorithm for Acoustic Signals },
journal = { International Journal of Computer Applications },
issue_date = { November 2015 },
volume = { 129 },
number = { 11 },
month = { November },
year = { 2015 },
issn = { 0975-8887 },
pages = { 33-37 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume129/number11/23120-2015907013/ },
doi = { 10.5120/ijca2015907013 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T23:23:09.910945+05:30
%A Pallavi Agrawal
%A Madhu Shandilya
%T Dual Microphone Beamforming Algorithm for Acoustic Signals
%J International Journal of Computer Applications
%@ 0975-8887
%V 129
%N 11
%P 33-37
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper covers delay-and-sum beamformer and Filter and sum beamformer - Minimum Variance Distortion-less Response (MVDR) beamformer. Both the beamformers were simulated and tested in terms of noise source separation at various frequencies and computational complexity using MATLAB. Even though Generalized Side-Lobe Cancellers (GSC), Superdirectivity and Post-Filtering are also available. It actually covers two-sensor array beamforming which can be extended to multisensory array. MVDR beamformer gave better results as compared to delay-and-sum beamformer, as it adopts to noise condition and also improves the beamformer output, but has a higher computational complexity. Seeing the simulation results, MVDR proves to be a better option for implementing on smart phone applications.

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Index Terms

Computer Science
Information Sciences

Keywords

Beamformer MVDR array noise

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