Wiki

• Circular Buffers – A fixed-size, thread-safe ring buffer for real-time producers and consumers, with a full C++ implementation.
• Digital Biquad Filters – Second-order recursive filters: the transfer function, the difference equation, and why they get cascaded.

Each page has a live frequency-response plot

• Low Pass – Passes below the cutoff, attenuates above it.
• High Pass – Passes above the cutoff, attenuates below it.
• Band Pass – Passes a band around a center frequency.
• Notch – Rejects a narrow band around a center frequency.
• All Pass – Flat magnitude, frequency-dependent phase shift.
• Peaking EQ – Boosts or cuts a band around a center frequency.
• Low Shelf – Boosts or cuts everything below the cutoff.
• High Shelf – Boosts or cuts everything above the cutoff.

• Concepts (C++20) – Compile-time constraints on template parameters, and how they replace SFINAE boilerplate.