2015-05-13 07:36 AM
Hi
I connected audio to ADC and can DSP with success only if the audio is from speaker out. I need to connect audio from a device which outputs 500mvpp. I am using the follow input circuit Thank you in advance for any help Georges2015-05-13 08:52 AM
500 mv will give a swing of 1/6 the ADCs range of 4095 counts. But the capacitor, 2 resistors and the ADC input resistance and capacitance form a network that will change that. Put a 'scope on the ADC input signal to see if it is as expected.
Cheers, Hal