craft Audio Spectrum Analyzer 2.0

[electronicsfreak 9]

Howdy!

 

Long story short, I love to tinker and hobby with electronics! 

This here is my second attempt at an Audio Spectrum Analyzer, or as purposed, an audio visual display (lights flash to music, and I'm amused for hours). https://www.youtube.com/watch?v=4fElvrqcLFg 

Bit of the technical side: Yes I'm purposely pushing the gain slightly past the edge of "clipping" in the video. The code is expecting up to 5Vpp swing, but as can be seen on the scope, I forgot about losses inside the op-amp. Similarly, I lazily through the "blocks" in series (sample, process, output). When properly overlapped using interrupts, it should appear much more fluid as the refresh period shrinks.

 

Anyways,

What you see is more of a proof of concept (whole thing is 8-bit space!), however I'm shooting for the final piece to be something a bit more permanent. Different display/driver (I'm thinking blue), mic'd input, auto-adjustable gain....gosh heheh, the list goes on. A pic of Vinyl Scratch is going somewhere on the final for sure, just like the first one. 

 

Let me know what you think! Would there be interest in something like this?

 

-EF

[Grepper 3,192]

I think it's pretty cool!

What microcontroller did you use for this project?

[electronicsfreak 9]

Thank-you! 

 

It is using a PIC18F series micro-controller at the heart. I haven't narrowed down a final controller yet, but the code should be portable across the series (hehe easier said than done  , I haven't tried moving it yet)

 

 

Little by little, picking parts for the final. Some should be here in a little over a week!

 

-EF