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THE DESIGNERS: Natalie Kacik David Thomason Debashree Guruaribam

Monophonic Analog Synthesizer. THE DESIGNERS: Natalie Kacik David Thomason Debashree Guruaribam. SPECS Frequency Range = 130.81 Hz  1046.5 Hz Control Relation = 1V/Octave. Choosing the Best Waveform. Increasing Frequency Content. The VCO (Voltage-Controlled Oscillator). +. -.

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THE DESIGNERS: Natalie Kacik David Thomason Debashree Guruaribam

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  1. Monophonic Analog Synthesizer THE DESIGNERS: Natalie Kacik David Thomason DebashreeGuruaribam

  2. SPECS Frequency Range = 130.81 Hz  1046.5 Hz Control Relation = 1V/Octave

  3. Choosing the Best Waveform Increasing Frequency Content

  4. The VCO(Voltage-Controlled Oscillator) + -

  5. VCO Design EC

  6. The Exponential Converter

  7. VCO Performance

  8. Voltage-Controlled Filter Bandwidth Equation: Operational Transconductance Amplifier (OTA) OTA Transfer Characteristic Equation:

  9. VCF Performance Bandwidth-Current Relation VCF Output Bode Plot Input Current: 500pA Input Signal: 1mV (-60 dB)

  10. Attack-Release Envelope and Mixer

  11. Our Amazingly Simple Mixer. The Final Output: Filtered Signal mixed with the AR Wave Gain Control Stage Small Signal Amplification Stage

  12. Putting it all together

  13. Improvements(for the next design cycle) • Higher frequency range VCO • Use higher order filters (instead of single pole) • ADSR • More effective mixer • Independent biasing circuits

  14. Questions??? Adam Holzman (Musician)

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