# science and how to put sound to lights....

**URL:** <https://boards.straightdope.com/t/science-and-how-to-put-sound-to-lights/209573>\
**Category:** Factual Questions\
**Created:** [October 25, 2003, 11:21pm UTC](https://boards.straightdope.com/t/science-and-how-to-put-sound-to-lights/209573 "2003-10-25T23:21:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chefIL11](https://avatars.discourse-cdn.com/v4/letter/c/e36b37/32.png) [@chefIL11](https://boards.straightdope.com/u/chefIL11)\
**Post date:** [October 25, 2003, 11:21pm UTC](https://boards.straightdope.com/t/science-and-how-to-put-sound-to-lights/209573/1 "2003-10-25T23:21:46Z")

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I hope someone can help me out on this one!

I got the idea in my head that I wanted to put the beats of music to lights. When I turn on my radio, I want the lights to flash according to the music. After talking to my father, he said this was done with what used to be called a “Synthesizer” that used to be available at Radio Shack… Well, I called up there and they did not carry anything like that.

What can I do to make this possible? Will it be a costly project? I’m a novice in this field. Thanks for the help!

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [October 25, 2003, 11:28pm UTC](https://boards.straightdope.com/t/science-and-how-to-put-sound-to-lights/209573/2 "2003-10-25T23:28:24Z")

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It was called a “sound organ” or “color organ”. [Here](http://www.aaroncake.net/circuits/organ.htm) is a schematic to build one.