FIR-based symmetrical acoustic beamformer with a constant beamwidth
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- 作者：Oren Rosen ; roseno@tx.technion.ac.il" class="auth_mail" title="E-mail the corresponding author ; Israel Cohen ; David Malah (Member ; EURASIP)
- 关键词：Constant beamwidth beamformers ; FIR-based beamformers ; Microphone arrays ; Robust beamformers
- 刊名：Signal Processing
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：130
- 期：Complete
- 页码：365-376
- 全文大小：2436 K
文摘
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A new method for the design of a constant beamwidth beamformer is proposed.
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The method designs FIR filters to achieve a constant beamwidth beampattern.
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The FIR filter frequency response is shaped to control the beamformer beamwidth.
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Smoothing magnitude coefficients were introduced in the FIR filter design.
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Improved performance is achieved in various scenarios, compared to other methods.