A podcast type audio-gram would be very useful for design so most of us podcast hosts dont have to show our face or a webcam for attention span. Podcast hosts would greatly benefit from this as said from my first sentence.
It would work by these line going up as the audio goes higher and louder. this would either be double sided or one sided and have an option for moving or still. it could also be moved where ever you want instead of set presets as for more convenience.