# Spectrum analyzer graphic problem

**URL:** <https://discourse.processing.org/t/spectrum-analyzer-graphic-problem/15576>\
**Category:** Libraries\
**Created:** [November 17, 2019, 2:35pm UTC](https://discourse.processing.org/t/spectrum-analyzer-graphic-problem/15576 "2019-11-17T14:35:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ercank](https://avatars.discourse-cdn.com/v4/letter/e/e9a140/32.png) [@ercank](https://discourse.processing.org/u/ercank)\
**Post date:** [November 17, 2019, 2:35pm UTC](https://discourse.processing.org/t/spectrum-analyzer-graphic-problem/15576/1 "2019-11-17T14:35:40Z")

</div>

Hi, I’m new to coding. I’m sorry to keep you busy with something simple.

I paste and run a sample code on the P5.JS online ditor (sound spectrum analyzer). I download “empty-example” with the library from the site and replace the sketch.js code with the online editor.  
I have Browersers index.html on my computer. When I want to play through the canvas is formed, the permission is obtained for the microphone, but does not create graphics. Where am I making a mistake?

---

<div class="post-metadata">

**Author:** ![kll](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kll/32/964_2.png) [@kll](https://discourse.processing.org/u/kll)\
**Post date:** [November 17, 2019, 2:46pm UTC](https://discourse.processing.org/t/spectrum-analyzer-graphic-problem/15576/2 "2019-11-17T14:46:16Z")

</div>

you can play  
p5.js / index.html / sketch.js  
local on PC using browser with double click on index.html

just for some basic drawings…

as soon you want line load files like picture/sound files  
your browser need to see a server

see [Image files loading issue](https://discourse.processing.org/t/image-files-loading-issue/15410/7) here most easy way

* * *

but, did you try use the Processing IDE 3.5.3 // p5.js Mode //  
( yes not easy copy between a downloaded p5.js online editor project / PDE procject )  
there also the server tool is build in.