Digital tools we use on the job.
The math we run every week — speaker delays, projector throws, signal bandwidth, network sizing — written down so you can run it too. Pure client-side, no signup, no ads. Bookmark away.
Signal generator
Sine wave, pink/white/brown noise, and frequency sweep — one tool, three modes.
Display test patterns
SMPTE/EBU bars, PLUGE, grayscale, geometry grid, solid fills. Fullscreen + downloadable.
Audio / video sync test
A ball strikes a wall once a second — the click plays at impact, so any AV-sync drift jumps out.
Test Utilities
FFT spectrum analyzer
Live spectrum from your microphone — FFT or 1/3-octave RTA, peak hold, configurable resolution.
Signal generator
Sine wave, pink/white/brown noise, and frequency sweep — one tool, three modes.
Display test patterns
SMPTE/EBU bars, PLUGE, grayscale, geometry grid, solid fills. Fullscreen + downloadable.
Audio / video sync test
A ball strikes a wall once a second — the click plays at impact, so any AV-sync drift jumps out.
Speaker test
Click any speaker, drag to pan, or run the full surround sequence — verifies channel routing on stereo, 5.1, and 7.1 systems.
Need this math at production scale?
We design and build the systems behind these calculations.