Two different frequency sin wave to left and right channel of sound card

[hbin]

Dear all,

I use "basic function generator.vi" to generate two sin wave with different frequency, and send them to left & right channel of sound card,
However, I can not hear different pitch from left & right speakers. The sound from left& right speakers are the same.

But I can see from the waveform chart the two sin wave with different frequency. If I only input one channel sin wave, I can hear the pitch changing with different frequency.

Anybody can help me. What I expect is I can hear different pitch from different speaker, when I change the frequency of one channel, I can hear the change from the corresponding speaker.

The program is attached, it is Labview 7.1

[Enrique]

Hi hbin;

I just extracted the actual signal from the signal wire, and that did the trick. So, this is not an elegant solution, but at least it shows you were on the right track... and it works now.

Enrique

Mensaje editado por Enrique