Sound File: creating left and right channels

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Cyrus
Cyrus 2013-4-16
I am new to matlab and was wondering if this is the correct way to specific left and right channels for a simple sound file I created and am trying to play (or if there is a better/simpler way):
x = [0:.1:1000*pi];
u = [0:.1:500*pi];
v = [501*pi:.1:1000*pi];
sinseg1 = sin(u);
sinseg2 = sin(v);
sinseg1_stereo = [sinseg1 * .2, sinseg1 * .8];
sinseg2_stereo = [sinseg2 * .8, sinseg2 * .2];
sound(sinseg1,1000);
sound(sinseg2,1000);

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回答（2 个）

Walter Roberson
Walter Roberson 2013-4-16
编辑：Walter Roberson 2013-4-16
dual_channel = [sinseg1_stereo(:), sinseg2_stereo(:)];
sound(dual_channel, 1000);
But I have to ask you what your intention was for
[sinseg1 * .2, sinseg1 * .8]
If I were to guess, I suspect what you wanted was
sinseg1_stereo = sinseg1 .* 0.2 + sinseg2 .* 0.8;
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Walter Roberson
Walter Roberson 2013-4-16
Okay, I will take another guess then:
sinseg1_stereo = [sinseg1(:) * .2, sinseg1(:) * .8];
sinseg2_stereo = [sinseg2(:) * .8, sinseg2(:) * .2];
sound(sinseg1_stereo,1000);
sound(sinseg2_stereo,1000);

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Cyrus
Cyrus 2013-4-16
编辑：Walter Roberson 2013-4-16
This is based on a tutorial I watched ( http://www.youtube.com/watch?v=ie7iREcYBPU, 18th minute approx.). I think sinseg1_stereo = sinseg1 .* 0.2 sinseg .* 0.8; is closer but I don't think addition is needed should I use a comma?

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