Self-Adjusting Equalizer Scott Lair

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Presentation transcript:

Self-Adjusting Equalizer Scott Lair Senior Design Self-Adjusting Equalizer Scott Lair

Overall System

Summing Amplifiers Stereo to mono converter Sum of bands High input impedance Potentiometer for tuning Sum of bands Tuning potentiometers Volume control

Bandpass Filters

Bandpass Filters ∆|H| = 0.64 dB 3 dB frequencies 2nd order 179 Hz 223 Hz, 1795 Hz 2229 Hz 2nd order Orthogonal Tuning R1 for w0 R2 for Q R3 for H

Oscillators Produce sinusoid for calibration Wein-Bridge

Microprocessor Three functions Three button input Volume control Calibration Viewing gain levels Three button input Up, down, enter

Other Concerns Switches Input device LCD Conditioning circuit Bandpass filters AC to DC converter Microphone?