Sound ADC

[Mudda]

Hi,

      I would like to measure an ADC of a sound signal. The sound wave is given to the mike input of the PC. when I used the example VI's I am getting the same signal as of my input. Is there any way just to measure the ADC of that sound wave. Appreciate your help.

thank you,

Mudda.

[Ayman K]

Mudda,

Are you using a DSA card. It seems as if you are just using the mike of your PC. By talking about the ADC of a sound signal, are you refering to the digital representation of the incoming signal? Are you using the Sound and Vibration Toolkit in LabVIEW? Please let me know so that we can assist you further with this issue.

Ayman K

[Mudda]

Hi,

     I am just using a mic input of the computer. I was not sure whether the data I am reading was compressed or un compressed. When i talked to NI technical person he said its un compressed data. I was using the SI Read function to read the data. Now as this is clear that I am reading Uncompressed data, If the data is compressed with some other tools is it possible to read the ADC compponent of the stored data.

Thank you.

[JLS]

Hello,

By ADC I presume you mean analog to digitical conversion, and by data, I presume you mean the digital data returned by the sound VIs.  You will have access to the data in 8 or 16 bits and mono or stereo form from your sound card.  I would recommend taking a look at the example VI entitled Simultaneous Sound IO.vi; you can find it in the example finder (click Help -> Find Examples... in LabVIEW) by navigating as shown in the attached example finder screenshot.

I think this will give you a good idea of how to use the sound VIs, and extract relevant sound data!

Thank you,

Best Regards,

JLS