Lecture 13 | MIT 21M.380 Music and Technology (Contemporary History and Aesthetics), Fall 2009

Introduction

This tutorial provides a comprehensive overview of modular synthesizers as discussed in Lecture 13 of the MIT course on Music and Technology. Modular synthesizers are versatile instruments that allow musicians and sound designers to create unique sounds by connecting various modules. Understanding their components and functionalities is essential for anyone interested in electronic music production.

Step 1: Understand the Basics of Modular Synthesizers

• Definition: Modular synthesizers are systems made up of individual modules that process and generate audio signals.

Key Components

• Oscillators: Generate basic waveforms (sine, square, sawtooth).
• Filters: Shape the sound by cutting off certain frequencies.
• Envelopes: Control how a sound evolves over time, affecting parameters like volume and pitch.
• LFOs (Low-Frequency Oscillators): Modulate different parameters to create movement in sounds.

Step 2: Explore Signal Flow

Connecting Modules

• Use patch cables to connect different modules.
• Understand the signal flow from oscillators to filters, then to output.

Typical Flow

1. Oscillator generates sound.
2. Filter modifies the sound.
3. VCA (Voltage Controlled Amplifier) controls the volume.
4. Output sends sound to speakers or recording devices.

Step 3: Experiment with Sound Design

Patch Examples

• Start with a simple patch: connect an oscillator to a filter and then to the VCA.
• Experiment by adding an LFO to modulate the filter cutoff.

Layering Sounds

• Use multiple oscillators to create richer, more complex textures.
• Try different waveforms to see how they interact.

Step 4: Utilize Control Voltage

Understanding Control Voltage (CV)

• CV is used to control various parameters in modular synthesizers, allowing for dynamic changes in sound.

Common Uses

• Modulate pitch with an LFO.
• Use envelopes to control filter cutoff dynamically.

Step 5: Learn About Sequencers

• Definition: Sequencers are modules that allow you to program a series of notes or control changes over time.

How to Use

• Connect a sequencer to an oscillator to create rhythmic patterns.
• Experiment with different sequences to understand timing and musicality.

Conclusion

Modular synthesizers offer endless possibilities for sound creation and manipulation. By understanding their components, exploring signal flow, and experimenting with sound design techniques, you can unlock the creative potential of these instruments. As you continue to learn and practice, consider diving deeper into specific modules and advanced techniques to enhance your music production skills.