Keyframing image size based on audio?
I want to make a video where images of the person speaking increase and decrease in size as the person speaks to show the loudness of the person, etc. I've seen a couple questions asking if it is possible to use audio to make images bigger or smaller, sort of like a music visualizer. However it seems like there is no easy way to do that so my solution is to use the audio spectrum effect and track that linear movement to keyframe the image's size. Is this possible at all, if so, is it the best solution to the problem?