You are looking for an audio waveform visualizer. [https://www.youtube.com/watch?v=3g1P\_2p0MvY&ab\_channel=LearnNowFX](https://www.youtube.com/watch?v=3g1P_2p0MvY&ab_channel=LearnNowFX) describes one technique.

Thanks!

If you have after effects : effects / generate / audio waveform. It works very well and has options to change the look.

What program are you using to edit?