Impulse & Click Test – Room Echo and Speaker Timing Check
Clicks and echoesReady
- Start quiet, raise slowly
- Check L/R markings first
- Disable audio enhancements
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Impulse response and click test
An impulse is the shortest possible sound. Listening to how it decays reveals your room’s echo, flutter between parallel walls and ringing in speakers.
What an impulse reveals
A perfect system turns a click into a click.
Flutter echo
Hard parallel walls bounce sound back and forth, creating a metallic zing after a click.
Speaker ringing and timing
Resonant cabinets and some filters keep ringing after the impulse.
How to Use the
Impulse Test
- 01
Room
stand where you normally listen.
- 02
Click
play single clicks and listen to the tail after each.
- 03
Echo
a buzzing or ringing tail means flutter echo between parallel walls.
- 04
Compare
try left, right and inverted clicks.
What an impulse reveals
A perfect system turns a click into a click. Rooms add reflections, so the click becomes a short burst followed by a decaying tail. Engineers record this tail to calculate reverberation time.
Flutter echo
Hard parallel walls bounce sound back and forth, creating a metallic zing after a click. A bookshelf, rug or curtain on one wall usually cures it.
Speaker ringing and timing
Resonant cabinets and some filters keep ringing after the impulse. Alternating left and right clicks also help confirm that both speakers are equally distant: the clicks should sound equally sharp and loud.
Full-range signals
Other full-range signals
Pink noise and sweeps complement impulses: noise for level, sweeps for response, clicks for timing.
Related guides and fixes
Learn more in these guides: No sound on Windows, No sound on Mac, Headphones only one side, Speakers crackling, How to test speakers, How to test headphones.
Frequently Asked Questions
Q.Can I measure reverberation time here?
Only by ear. Use the recorder to capture clicks and inspect the decay in an audio editor.
Q.Why does the click sound different on each side?
Different distances, reflections or speaker damage.
Q.Is the click loud?
It is brief but sharp; keep the volume moderate.