how remove unwanted angle of arrivals for four channel microphone drone detection system

1 次查看（过去 30 天）
Amjad Iqbal
Amjad Iqbal 2019-1-8
评论： Amjad Iqbal 2019-1-10
angles.JPG
I need gudance for removing those frames which contain unwanted angle of arrivals i.e refelction from grounds, blue color are pure drone sound angle of arrivals,
how can i create an boolean array to filter out unnecessary Angle of arrivals, I used "eframe' to do framing and apply GCCPHAT for getting delays of sounds for each frames and finally calculate angles of sound source to microphone, now red color signals are due to reflection i want remove them, please researchers guide me.
angleNum = length(tau1);
angles = zeros(angleNum, 2);
for i = 1:angleNum
[theta, varphi] = angleGet(tau1(i), tau2(i), tau3(i));
angles(i, 1) = theta;
angles(i, 2) = varphi;
end
figure(5);
scatter(angles(:, 1), angles(:, 2));
  1 个评论
Amjad Iqbal
Amjad Iqbal 2019-1-10
angle_select = zeros(686,2);
for i = 1:686
if angles(i,2) >-90
angle_select(i,:) = angles(i,:);
end
end
angle_select(all(angle_select == 0,2),:) = [];
figure(6);
scatter(angle_select(:, 2), angle_select(:, 1));
index_angle = find(angles(:,2)>-90);
index_frame = index_angle+1;
T_select = T(index_frame);
Is this right way for removing those frames which contain unwanted angle of arrivals??

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Modeling 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by