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Is there a dtmf decoder VI which can directly receive audio input?

I know labview can receive and process the already decoded data, but is there a way it can receive the actual tones and decode them?
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Well, I don't believe there is one on the website. Really its just a matter of being able to read the waveforms for the tones into LabVIEW. Should be able to do this with either a DAQ card or the sound VI's. Once you had the waveform, you could to a frequency analysis and then just have a look up table for the tone values.
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