Speaker Test – Free Online Audio Output Test

Test speakers and headphones with 6 test tones: 440Hz sine, left/right channel, 20Hz-20kHz frequency sweep, white noise, C-scale.

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Features

🎵

440Hz Reference

Standard A4 tuning note for reference. Verify your speakers are tuned correctly.

🔊

Left/Right Channel

Test each channel individually. Ensure both speakers are working.

📈

Frequency Sweep

20Hz to 20kHz exponential sweep. Test full frequency response.

📻

White Noise

Full spectrum noise to test overall speaker response.

🎹

C-Major Scale

Musical scale from C4 to C5 for natural sound testing.

🔊

Device Selector

Choose output device using setSinkId API if available.

How to Use

1

Select Test

Choose a test tone from the 6 available options.

2

Adjust Volume

Use the volume slider to set a comfortable listening level.

3

Play

Click Play to start the test. Each test auto-stops after completion.

4

Check Results

Listen carefully for distortion, crackling, or missing frequencies.

Frequently Asked Questions

What is the 440Hz tone for?
440Hz is the standard concert pitch A4. It's a reference tone used to tune instruments and verify speaker calibration.
How does the frequency sweep work?
Plays frequencies from 20Hz (low bass) to 20kHz (high treble) over several seconds. If you don't hear the extremes, your speakers may be lacking bass or treble response.
What should I listen for?
Crackling or distortion indicates a damaged speaker. Missing frequencies (especially at the sweep extremes) indicate limited frequency response.
Is my data sent to a server?
No. All audio is generated locally using Web Audio API oscillators. No network requests are made.

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