A Fast Directionally Constrained Minimization of Power Algorithm for Extracting a Speech Signal Perpendicular to a Microphone Array

In this paper, an extended method of the directionally constrained minimization of power (DCMP) algorithm for broadband signals is proposed. The DCMP algorithm is one of the useful techniques of extracting a target signal from observed signals of a microphone array system. In the DCMP algorithm, output power of the microphone array is minimized under a constraint of constant responses to directions of arrival (DOAs) of specific signals. In our algorithm, by limiting the directional constraint to the perpendicular direction to the sensor array system, the calculating time is reduced.

Authors:

• Yasuhiko Okuma
• Yuichi Suzuki
• Takahiro Murakami
• Yoshihisa Ishida

Keywords:

• Beamformer
• directionally constrained minimizationof power
• direction of arrival
• microphone array.

References:

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