Peekdata returns only one channel

Question

I have matlab ala stereo audio input:

aud=analoginput('winsound',0); addchannel(aud,1:2) 

When I finished doing this and ask

 aud_data=getdata(aud); 

I get an array showing all the data from both channels. I have confirmed that this data is, in fact, the actual stereo signal that I want.

However, if I run

 aud_peek=peekdata(aud,some_number_of_samples); 

while the data is being collected, it seems to me that I only get data with one channel, although MathWorks says I need to get two .

Any thoughts on why this is happening?

I am using Matlab 7.

Answer 1

You tried aud_peek=peekdata(aud,some_number_of_samples,'native');
or
aud_peek=peekdata(aud,some_number_of_samples,'double');