I’m linking below to an app from 2017 called QA_ABX. This program will take a WAV file (your choice of music or tones) and it let’s you inject different types of distortions on the fly.
Once you have picked your distortion type and the severity of distortion, you can audition 3 audio streams: The A stream, the B stream or the X stream.
The distortion will only be applied to the A OR B stream, and it’s random on each iteration. Your task is to identify if the A or B stream has been distorted with the distortion you selected. And if you can hear a difference between the A and B streams, you can then decide if the X stream is the A or B stream.
The distortions are very easy to pick up on the audio analyzer (try with a 1 kHz tone), but very difficult to pick up by ear whether it’s music or a tone.
More info and a PDF at the link below. If you are looking for a starting point, load your favorite audition WAV and play through your favorite DAC and pick 8-bit distortion. You’ll easily succeed at that.
I’d be curious what others can consistently hear for amplitude distortion.