How to access both channels of soundcard

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seme 2013-9-8

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采纳的回答： Jan

Could anyone has any idea how i could access both channels of sound card at the same time .

Thank you

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Answer 1

Jan 2013-9-8

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https://ww2.mathworks.cn/matlabcentral/answers/86635-how-to-access-both-channels-of-soundcard#answer_96160

It depends on what "access" exactly means. If you show us, how you access one channel, an answer might be very easy. If you e.g. use the audio-recorder and mean capturing a stereo signal, there should not be a problem at all.

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Walter Roberson 2013-9-8

Right, it normally happens automatically if you are using the default audio.

If the sound card is being access through the data acquisition toolbox then we need to know more about it.

seme 2013-9-9

编辑：Walter Roberson 2013-9-9

在 MATLAB Online 中打开

Thank you Jan Simon

Here is an example code to output to the sound card that i try

AO = analogoutput('winsound',0);
chan = addchannel(AO,2);
duration =1;
SampleRate = 44100;
set(AO,'SampleRate',SampleRate)
set(AO,'TriggerType','Manual')
NumSamples = SampleRate*duration;
x = linspace(0,2*pi*500,NumSamples);
y = linspace(0,(2*pi*500)-1.57,NumSamples);
data = sin(x)';
data1=sin(y)';
putdata(AO,data)
start(AO)
trigger(AO)
waittilstop(AO,5)
delete(AO)
clear AO