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ADAU1442 - Vrms input measurement

Question asked by mcrr on Jun 20, 2012
Latest reply on Jul 12, 2012 by BrettG

Hi Srs.,

 

It's my first post here and I’m working with adau1442 dsp to develop a sound level meter with frequency analyzer. I know making a frequency analyzer in sigmastudio, but I don't know how to read the audio input voltage (true RMS) to calculate sound pressure level in db and  A, C and Z frequency weighting filter.

I would like to know if it's possible and how to read true rms audio input voltage.

 

Thanks in advanced.

 

 

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