# Library or method to obtain audio playback data? Hz, Amp, etc
**URL:** https://discourse.processing.org/t/library-or-method-to-obtain-audio-playback-data-hz-amp-etc/10735
**Category:** Libraries
**Created:** [April 29, 2019, 4:55am UTC](https://discourse.processing.org/t/library-or-method-to-obtain-audio-playback-data-hz-amp-etc/10735 "2019-04-29T04:55:36Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@DerekCresswell](https://discourse.processing.org/u/DerekCresswell)
#### Post date: [April 29, 2019, 4:55am UTC](https://discourse.processing.org/t/library-or-method-to-obtain-audio-playback-data-hz-amp-etc/10735/1 "2019-04-29T04:55:36Z")
I’m looking to create a project to visual audio. I obviously need audio to do that.
I’d prefer to have it work with the system audio. But being able to input a mp3 or even a YT link.
Any starting points?
Thanks!
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### Author:  [@kll](https://discourse.processing.org/u/kll)
#### Post date: [April 29, 2019, 5:22am UTC](https://discourse.processing.org/t/library-or-method-to-obtain-audio-playback-data-hz-amp-etc/10735/2 "2019-04-29T05:22:53Z")
check on MINIM lib
and its FFT examples.
example how my current projects looks like
- signal graph
- FFT graph (with mouse over bar / frequency show )
- mixing and volume sliders ( handmade )
