Ghani Lawal- Use filters with more stages (and possibly Chebychev) so that the slope of the transition bands will be sharper
- Append an inverting amplifier, with R2 (or R1) as a trimmer potentiometer to the outputs of all the filters so that I can match all of their amplifications before they output signal gets to the LED drivers
- This way I can sure all the filters have unity amplification at their midpoint frequency's
- Add test-points
- Prototype each filter on a breadboard, and possibly PCB beforehand
- Seems that the issue with the sub-bass filter outputting a 343Hz signal is due to low gain margin which is exploited by the PCB
- Should be done for all sub-circuits to be honest
- For through hole devices, make sure there is enough room between holes for their footprints so there would be little to no chance of a short circuit between the terminals
- had this problem with the +5V inverter
How I would Improve!
A project log for Music Spectrum and dB Visualizer
Receive input from a 3.5mm jack, divides the music into 7 frequency bands, shows the loudness of each frequency band in DB using LEDS.
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