analog lab #9

If the signal is distorting, the wave would look like the wave in A, where you can both the positive and negative ends of the wave clipping.
The sine wave through this circuit would look like the wave in B, where only the positive half of the signal is distorted, since there is only one diode.
Since there is no resistors in the Op Amp circuit in the second diagram, these two would sound the same.
With this circuit, if you turn the crossfader all the way to one side you’ll hear the clean signal. If you turn the crossfader all the way to the other side you’ll hear the distorted signal.
If the crossfader is in the middle, you will hear the average of the two signals.