Vocoded

Vocoded is the effect template while the original audio generally vocoding the noise.

In Audacity, you'll need for today is to import the audio file into the track and generate the noise with an automatic default preset. Split the main but stereo track and get rid of the right half of an audio track. Make both of them into a stereo track and also apply the vocoder filter.

In Kdenlive, import your video file and put it into the 1st track and duplicate it and put it into the 2nd track between above and below. Apply the invert and the brightness with the value of 500. Apply the difference composition into the second track, not the first track.