Calibration - Nulluex's Domain

display / audio

Calibration

Test patterns and tones that run right in your browser, with nothing to download. Use a computer connected to the display or speakers you want to check, open a pattern full screen, and adjust from there.

Set your browser zoom to 100% and use your display's native resolution.
Let the display warm up for about 30 minutes and dim the room.
Pick the Movie or Cinema picture mode and turn off dynamic contrast, sharpening and motion smoothing.

click to open full screen

Display Patterns

In full screen: click or press the right arrow for the next pattern, the left arrow for the previous one, and Esc to exit.

stereo, generated in your browser

Audio Tones

Stopped. Volume15% Stop Start low and turn it up slowly. Sweeps and low tones can damage speakers if played too loudly.

Channel checkpink noise

Left Both (center)Right

Each channel should come only from the matching speaker, and the center image should sit exactly between the two.

Speaker phasepink noise

In phase Out of phase

In phase should sound solid and centered. Out of phase sounds thin and vague with weak bass. If the "in phase" one sounds worse, one speaker is wired backwards.

Stereo noisepink noise, L and R different

Play

A wide, even wash of noise. Listen for rattles, buzzes and any frequency that stands out.

Frequency sweep20 Hz to 20 kHz, 30 s

Start sweep

Listen for buzzing, rattles and loud or quiet regions. Many rooms and small speakers will not reproduce the lowest octave.

Tone generatorsine wave

1000 Hz Play
Presets: 20 30 40 60 100 1k 10k

Find where your subwoofer or speakers start to give out, or check a crossover point. Bass tones below 40 Hz can be felt as much as heard.

read this first

Good to Know

The patterns are standard 8-bit images sent from your computer. Your operating system, graphics driver and display can change the levels, and PC and TV inputs may use different black levels (full or limited range). Treat this as a quick check, not a replacement for a calibration disc or a meter.
Audio plays in stereo through your computer's output, so it can't test a 5.1 setup. For surround, use the test trailers in Resources.
Turn off any audio enhancements, loudness or equalizer settings on your computer so the tones reach your speakers unchanged.