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. Everything runs in your browser: no signup, no ads, nothing uploaded.
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Signal generator
Sine wave, pink/white/brown noise, and frequency sweep — one tool, three modes.
Display test patterns
SMPTE / RP-219 bars, PLUGE, greyscale, crosshatch, multiburst, overscan — drawn 1:1 in device pixels. Fullscreen + PNG.
Audio / video sync test
A ball drops onto a fixed floor once a second; the click is scheduled on the audio clock, so what you see and hear should land together.
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Test Utilities
Signal generator
Sine wave, pink/white/brown noise, and frequency sweep — one tool, three modes.
Display test patterns
SMPTE / RP-219 bars, PLUGE, greyscale, crosshatch, multiburst, overscan — drawn 1:1 in device pixels. Fullscreen + PNG.
Audio / video sync test
A ball drops onto a fixed floor once a second; the click is scheduled on the audio clock, so what you see and hear should land together.
Motion test patterns
Pursuit, scrolling text and a 24–60 fps content clock against your measured refresh — blur, tearing, dropped frames, cadence judder.
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.
Audio delay finder
Plays an impulse, captures it on the mic, reports round-trip latency — for tuning DSP delay blocks.