Audio & Signal Notes Puts DSP Theory Beside the Calculator

Field notes

The project organizes its material as full tutorial pages with an interactive calculation step embedded in each article. Listed instruments cover both everyday audio work and implementation details, including window-function metrics, Welch-averaged coherence, filter group delay, CRC parameter sets, and room-mode pressure shapes. The FFT analyser can generate a signal or accept a capture, while the level tools distinguish correlated from uncorrelated sources. The site states that browser inputs are not uploaded or stored and that no account is required.