I want to animate a shader node from a sound file (showing an open or closed mouth if the sound crosses a threshold). I follow the suggestions here, here and here, but the graph editor shows nothing in the result. I tried with a WAV and an MP3 file. Here is a GIF showing my process:
I'm new to Blender, and the threads above suggest this feature works out-of-the-box, so I'm sure I'm doing something wrong, but what is it?
Update after HOME key
Following one answer, I press the HOME key after baking the sound. Baking had some result, as the editor zooms out and shows crosses at the expected length (24 frames per second times length of the track), but it does not show a curve. I also pressed the "Normalize" button at the top left:
The track has synthetic speech at about -16 dB. You can find it here. And I confirm that it has audio, as in this screenshot from Audacity:
I also tried with a different track, a longer one in MP3, and the result is the same.
It seems that all the steps are correct and it may be my Blender version that is faulty. Here is a file started from scratch.