make a vector from wave sound
5 次查看(过去 30 天)
显示 更早的评论
[x,fs,nbits] = wavread('w.wav');
%sound(x,fs);
h = zeros(1,4000);
h(1) = 1;
h(1000) = 0.25;
h(2000) = (1/16);
h(3000) = 1/64;
h(4000) = 1/256;
y = conv(x,h);
y = y/max(y);
sound(y,fs);
it gives me an error "A and B must be vectors" as for y = conv(x,h) .
0 个评论
回答(2 个)
Star Strider
2015-9-29
Check the size of ‘x’. It may be a two-column matrix (one column for each channel).
3 个评论
Star Strider
2015-9-29
Not strictly 2D but do the same convolution on both channels, or if the same sound is duplicated in both channels, just one column of ‘x’ with your current code.
Image Analyst
2015-9-29
You could do one 2D convolution or 2 1-D covolutions
rightChannel = x(:, 1);
echoRight = conv(rightChannel, h, 'same');
leftChannel = x(:, 2);
echoLeft = conv(leftChannel , h, 'same');
% Combine
newSignal = [echoRight, echoLeft];
or something like that.
Image Analyst
2015-9-29
Maybe try
y = conv2(x, [h,h], 'same');
or
y = conv2(x,[h;h], 'same');
so you're doing a 2D convolution
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Spectral Measurements 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!