I have made a VU frequency visualiser using a MSGEQ7 chip, WS2812 leds and an arduino. I am pleased with result.
I was hoping you could answer a question on how not to degrade the audio.
Presently, i run one channel (mono) audio into circuit and have no audio output, and i cant hear anything. i know that i have to put the VU circuit in parallel to the audio signal but i am wondering if i need to add any electrical components to ensure that i don't deamplify the audio signal, or add noise, etc.
If i split the audio signal so that it runs to an amplifier and speakers, and also to the VU contraption that i have made, what do i need to do to ensure that the audio is not degraded?
Hope this question is sensible enough to get a reply. I know i should have included some sort of circuit diagram but i trust it is simple enough to 'visualise'.