HACKER Q&A
📣 dqpb

What's the point of audio waveform visualization?


When playing audio, iPhone 14 displays the waveform on the dynamic island. It looks neat, but it got me thinking - why is this ever visualized outside of audio editing software? Is it just art? Does anyone actually get any information from it? What's the point?


  👤 dqpb Accepted Answer ✓
To answer my own question, it does indicate that something is playing, even of the audio is turned off, which is useful.

I guess I'm wondering if anyone can "read" waveforms, or if there's some other usefulness to it.


👤 necovek
It's not exactly art, but similar to a vumeter, you get an artifical "dancer" on your screen: just like watching other people dance (in rhythm), it activates your visual metronome and gets you more engaged with music.

If the above sounds convincing, bear in mind that I am just thinking aloud, and I have no idea if any of the above translates to other people, let alone that this might be the reason music is ever visualized like this for playback.


👤 h2odragon
It can be art, but in most contexts it's a low information progress bar type "give the user something to watch" measure.

👤 eimrine
I do not know what is displaying on iphone, but I love seing a spectre (Fourier transform) on log scale while listening to music.