Effacer les filtres
Effacer les filtres

make a vector from wave sound

5 vues (au cours des 30 derniers jours)
ayman daraghmah
ayman daraghmah le 29 Sep 2015
Commenté : Image Analyst le 29 Sep 2015
[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) .

Réponses (2)

Star Strider
Star Strider le 29 Sep 2015
Check the size of ‘x’. It may be a two-column matrix (one column for each channel).
  3 commentaires
Star Strider
Star Strider le 29 Sep 2015
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
Image Analyst le 29 Sep 2015
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.

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Image Analyst
Image Analyst le 29 Sep 2015
Maybe try
y = conv2(x, [h,h], 'same');
or
y = conv2(x,[h;h], 'same');
so you're doing a 2D convolution

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