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SiGNAL Modular Synthesizer

Set of modules designed to provide the basic functions for synthesis including an oscilloscope module for visualizing sound.

preston-c-11Preston C-11
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  • preston-c-11Preston C-11

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ongoing project

This project was created on 05/02/2025 and last updated 11 days ago.

Description

The modules created for the project consist of:
- Voltage Controlled Oscillator x2 (utilized the SSI2131 IC)
- 4 Channel Mixer (op-amp summing circuit with LPF)
- Voltage controlled filter (low-pass) - diode ladder based design
- Voltage controlled amplifier - long tailed differential amplifier based design
- Envelope Generator - 555 timer in monostable output configuration
- Low frequency oscillator - relaxation oscillator based design
- Delay effect module - uses the PT2399 delay IC
- Waveform Display (OLED) - Arduinonano based
- Stereo output - Class A amplifier with additional panning controls

All PCBs are 2 layer and were designed in KiCAD. The faceplates are aluminum based single layer PCBs with soldermask and silkscreen design to provide user interface and mounting.
Report paper: https://docs.google.com/document/d/e/2PACX-1vSg4ZcxcjNI-cufYlCcWqN0VDs84Otn-Q1WCjTtyJZdaTRmV

Details

Files

VCO.pdf

Adobe Portable Document Format - 260.29 kB - 05/02/2025 at 04:28

Preview

Envelope.pdf

Adobe Portable Document Format - 46.58 kB - 05/02/2025 at 04:28

Preview

MIXER.pdf

Adobe Portable Document Format - 33.80 kB - 05/02/2025 at 04:28

Preview

vca.pdf

Adobe Portable Document Format - 41.47 kB - 05/02/2025 at 04:28

Preview

DELAY.pdf

Adobe Portable Document Format - 51.27 kB - 05/02/2025 at 04:28

Preview

View all 9 files

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