In Linux, I need to visualize the bitwise difference between two audio files (left and right channel), in a way so that I can understand (approximately) when they are identical, and when they are different.
The tools I use just portray the side-by-side bitwise difference byte by byte, but I need a visualization of the full files.
Is there a utility I can use for this?
No utility, but you could do it in Python relatively easily:
import matplotlib.pyplot as plt
import scipy.io.wavfile as wf
rate, data = wf.read("file.wav")
lchannel, rchannel = data[:,0], data[:,1]
diff = lchannel != rchannel
plt.plot(diff)