How can I find mean crossing irregularity?
1 次查看(过去 30 天)
显示 更早的评论
I have an sound file with 144000 data. I split this file into windows thanks to the buffer code. I want to find the mean crossing irregularity for each of these windows. if X denotes the random variable for the interval between two successive mean crossing indices.Mean crossing irregularity is defined as, the ratio of standard deviation of this variable to its' mean value. So I want to find this ratio for each of these windows. How can I do it? Thank you.
sound=structWheeze(2,1).SoundData;
piece = 400;
overlap = 200;
frames = buffer(sound, piece, overlap);
for k1 = 1:fix(size(frames,2)/10)
x = 1:length(sound);
zci = @(v) find(v(:).*circshift(v(:), [-1 0]) <= 0);
dy = zci(sound);
for k1 = 1:size(dy,1)-1
b = [[1;1] [x(dy(k1)); x(dy(k1)+1)]]\[sound(dy(k1)); sound(dy(k1)+1)];
x0(k1) = -b(1)/b(2);
end
end
0 个评论
回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Graphics Performance 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!