This is what an “umm” looks like

This image, of the audio waveform from a sound clip in Audacity, shows a little “umm” right in the center, surrounded by the larger waveforms of legitimate, fully-voiced words. One reason I enjoy working with audio is I can make myself sound very articulate by carefully snipping out all the vocalized pauses in my speech. It’s possible to do that in video, but trickier.