Ghani Lawal- Will have 5 decibel ranges for volume, if frequency band is above lower limit for that range, associated LED will turn on
- LED Colors (from low to high volume)
- Blue
- Green (Turquoise)
- Green
- Yellow
- Red
- Spectrum & Db visualizer steps:
- Connect to sound source via 3.5mm jack
- Pre-amp the signal voltage
- Split up signal into 7 frequency ranges using array of bandpass filters
- Each filter will be followed by a (bridge) full-wave rectifier with a smoothing capacitor filter
- DC signal from rectifier will be fed into an array of comparators
- Each comparator is followed by an LED circuit, if the DC signal is higher than the reference level, the LED will light up
- Reference voltage used for comparator circuit will probably be made adjustable
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High Level Plan
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.
Discussions
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