EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Jul 24·5 min read
Fast Synthesis of Basic Oscillators
TL;DR
Fast oscillators for synthesizers on GBA and rp2040 were developed using 32-bit integer math, prioritizing speed over sound quality. This approach simplifies pitch accuracy while accepting some aliasing artifacts.
✦ Why It Matters
Consider using 32-bit integer math for audio synthesis in resource-constrained environments to optimize performance.
Key Takeaways
- Use 32-bit integers for efficient audio synthesis.
- Implement saw, square, triangle, and pulse waves.
- Optimize for speed in resource-constrained environments.
- Consider aliasing management techniques like phase modulation.
How It Works
The oscillators are built using integer math, where the phase is incremented each sample to generate waveforms. For example, a saw wave is created by adding a calculated step to the phase, while square and triangle waves are derived using conditional logic or bitwise operations.
This approach minimizes computational overhead and allows for real-time audio generation.