Hi,
I would like to generate successively 16 audio tones of different frequencies with LABVIEW 8.2. The audio tones sequence should be the following one:
21ms audio tone with a frequency
225ms pause
21ms audio tone with a frequency
225ms pause
21ms audio tone with a frequency
...
The only exception is the pause between the 8th and the 9th pulse, which is 10s.
The 16 different frequencies are generated by an algorithm and are in the range from 9kHz to11kHz.
I developed a solution with the help of SIGNAL BY DURATION.VI(chose signal is sine) and WAIT.VI. I use a realtek sound card to play the audio tones but it is full of harmonic distortions. I guess it is a consequence of the short duration of the audio tone and the SIGNAL BY DURATION.VI
I'm wondering if there is a better solution, i.e. using the pulse train stuff and a related NI Sound card. I have also thought about a smooth rise and fall time for the audio tones.
What do you guys think?
If you need any further information or would like to take a look into my VI, let me know please.
Thanks a lot,
LabviewHans