mirror of https://github.com/thesofproject/sof.git
29 lines
782 B
Mathematica
29 lines
782 B
Mathematica
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% bf = bf_array_circ(bf)
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%
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% Inputs
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% bf.mic_n ... number of microphones
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% bf.mic_r ... radius of circular array [m]
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%
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% Outputs
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% bf.mic_x ... x coordinates [m]
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% bf.mic_y ... y coordinates [m]
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% bf.mic_z ... z coordinates [m]
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% SPDX-License-Identifier: BSD-3-Clause
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%
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% Copyright (c) 2020, Intel Corporation. All rights reserved.
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%
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% Author: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
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function bf = bf_array_circ(bf)
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bf.mic_angle = (0:bf.mic_n-1)*360/bf.mic_n; % Mic 1 at 0 deg
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idx = find(bf.mic_angle > 180); % wrap > 180 deg to -180 .. 0
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bf.mic_angle(idx) = bf.mic_angle(idx)-360;
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bf.mic_x = bf.mic_r*cosd(bf.mic_angle);
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bf.mic_y = bf.mic_r*sind(bf.mic_angle);
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bf.mic_z = zeros(1,bf.mic_n);
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bf.mic_d = sqrt((bf.mic_x(1)-bf.mic_x(2))^2+(bf.mic_y(1)-bf.mic_y(2))^2);
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end
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