Home/ Questions/Q 5949439
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-22T17:15:00+00:00

I am developing an app where the user can record some audio (their voice)

  • 0

I am developing an app where the user can record some audio (their voice) and apply a visual effect to it. I am using FMOD to process all of the audio and add audio effects and all of that. My question are there any APIs out there that handle iOS audio visualization? I had in mind to be able to record something, then have a ‘talking hand’ animate to the recording.

I was also thinking of being able to display a ‘visualization’ to the recording, I know that you can grab the wave information and stuff from FMOD, but how would you use that data to create a visualization?

Thanks.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    First things first: there’s no library out there for what you want. It’s just a bit too specific, I think.

    The good news is this isn’t terribly hard to do – it’s just about getting your head in the right place.

    Instead of thinking about sound, let’s think about something else, like the accelerometer. If I want to have a UIView move around in response to the accelerometer I could quite simply take the outputted value for the Z-axis (between -1 and 1) and convert it coordinates on the screen (0 through 480, for example).

    If I just plug the accelerometer measurements directly into my conversion formula it’s probably going to be a bit jerky. The UIView might bounce all over the place. This is because the accelerometer measurements can vary a lot. So maybe I add some kind of simple filter to make the changes between measurements more gradual.

    Now, what has this got to do with the audio? Actually, a fair bit. For example, if you substitute amplitude for the accelerometer you could have a UIView that moved up and down in response to the loudness of the audio. All you’d need to do is write something that sent amplitude values constantly in to the UIView you wanted to animate.

    You can then get a little more complicated, by having a view that may move or change its position/scale in response to certain frequency ranges (bass, perhaps). So I think perhaps if you take a step back and think about exactly what you’re trying to animate in response to what parameters this may become a little easier for you.

    • 0