Two claps · Quick room response check

Room Clap Test

BETA

This test checks the sound of the room after each clap.

BETAThis tool is public, but the clap timing and result guidance are still being refined with real room tests.
Audio is analyzed on your device and is not uploaded.

How It Works

Step back, clap twice, then check the room response

1

Place your phone or laptop on a desk or stand.

2

Step back about 1–1.5 m. Do not clap right next to the microphone.

3

Follow the on-screen countdown. Clap once only when the screen shows CLAP. Then stay quiet. The tool will ask twice.

4

The result shows the room decay, reflection markers, and measurement reliability.

The goal is to record the room tail and reflections after each clap. A strong clap is fine. Wait for the screen prompt and do not clap right next to the microphone.

Quick Room Check

Ready to listen

Step 0 / 4

Microphone setup

Place your device where you want to check the room.

Keep the device still. Step back about 1–1.5 m. Clap once only when the screen shows CLAP.

A quiet room gives a more reliable result.

Room Sound Check

A quick indoor reverb check without speakers or measurement microphones

This tool checks how a room responds after a hand clap. It helps show the room tail, early reflections, possible flutter echo, and background noise using only your device microphone.

This room sound check can be useful in home recording rooms, podcast rooms, voice-over spaces, rehearsal rooms, practice rooms, and small studios.

This is not a laboratory measurement because it does not use speaker playback or calibrated equipment. Use the same device position when you compare curtains, furniture, absorbers, open doors, or different room locations.

Related Tools

Speaker System Check

Use guided signals to check speaker polarity. You can also check the left and right channels, the sound in the center, and speaker matching.

 Tone Generator

Play specific frequencies when you want to investigate a possible room resonance.

 Speaker Test

Use music, voices, noise, and bass to hear how the room and speakers work together.
View All Tools
Place your device where you want to check the room. Keep the device still. Step back about 1–1.5 m. Clap once only when the screen shows CLAP. A quiet room gives a more reliable result. Checking the microphone… Allow microphone access when your browser asks. Stay quiet while the input noise is checked. The meter uses input level, so different devices may show different bar heights. The final result also checks the clap-to-noise range. Clap once now. Clap once. Then stay quiet while the room tail fades. Clap detected. Stay quiet while the remaining room sound is recorded. Analyzing the room… Checking the room tail, frequency bands, and reflection patterns. The clap was too loud. The clap was a little too quiet. There was extra room noise. The clap was very strong. The result can still be used with lower confidence. The clap was captured, but the result may be less detailed. The clap was captured with extra room noise. No clear clap was detected. Try again when you are ready. One usable clap is already available. You can finish now with a lower-confidence result. The room is noisy, but you can continue with a reference-only result. Get ready. Wait for the 3, 2, 1 count. Clap once only when the screen shows CLAP. Do not clap early. Stay quiet after the clap. One more clap is needed. The first two claps did not match closely enough. Clap once more from the same position. Keep the device and your clap distance the same. One more clap Clap match check Claps did not match Please measure again. The claps did not have a matching room decay pattern. A chair noise, desk vibration, movement, or microphone processing may have changed one clap. Keep the device still and clap from the same distance. Measure Again The claps did not match closely enough. The room decay shape changed between claps. A chair noise, desk vibration, movement, or microphone processing may have affected the test. Match score Ready to listen Microphone setup Background sound Two normal claps Clap check No clap detected Microphone setup Microphone access Quiet baseline Microphone blocked Enable microphone access in your browser settings, then try again. Microphone not found Connect or enable a microphone, then try again. Microphone not supported This browser does not support microphone access for this test. Microphone unavailable Close other audio apps, reload the page, and try again. Quiet Moderate High Noise-limited Not reliable Short decay Balanced room sound Slight room reflection Long decay Very long decay Echoey Short Slightly long Long Detected Not Detected Possible Likely Weak Candidate Strong Excellent Good Usable Low Retry Recommended Insufficient Signal Reference Only Clear Improved Similar More Noticeable Good Usable Room Sound Noticeable Improvement Recommended Suitable Noticeable room sound Reverb OK Not Recommended Dry The room becomes quiet quickly after the clap. The room sound fades at a moderate speed. It should work for many everyday uses. The room has some reflection, but the sound still fades clearly. The room sound stays for a relatively long time after the clap. The room has a long decay. It may strongly affect speech and recording. The room keeps responding for a long time after the clap. This is likely to sound echoey in speech and recording. The background noise is too high for a reliable room decay result. The room was quiet enough for the check. Some background sound was present, but the clap remained usable. Background sound reduced the usable decay range. The sound falls away quickly after the clap. The sound fades at a moderate speed after the clap. The sound remains a little longer than a dry room. The room keeps ringing after the direct clap ends. A long room tail remains after the clap. A very long room tail remains after the clap. The decay value is limited because the background noise is too close to the room tail. No strong early reflection stood out clearly. A weak reflection candidate was visible, but it was not strong enough to confirm. A strong reflection follows the clap. No regular repeating reflection pattern was found. One clap cannot confirm a repeating reflection pattern. A repeating pattern may be present. Similar repeating reflections appeared across both claps. A strong regular echo pattern appeared after the claps. The two claps produced similar decay curves. The claps were reasonably similar, with some variation. The clap results varied, so the conclusion is more cautious. This result uses one clap, so reflection and consistency findings are limited. The room decay was fairly short, but some reflection peaks repeated after the claps. The room response was clean, with no strong repeating reflection pattern. Moderate Reflection No clear repeating pattern was found. A second clap is needed to confirm whether a reflection pattern repeats. Some reflection intervals repeated, but the pattern was not fully consistent. Only weak reflection candidates were found. Treat them as visual references, not confirmed echoes. Similar reflection intervals were found after both claps. A strong reflective pattern was found. This space may sound echoey. Low-frequency results are shown only when the clap contains enough usable energy. Only one band had enough usable energy, so band comparison is limited. Band decay is shown from one clap only. Treat it as reference-only. Several frequency bands had enough energy for a useful comparison. No reliable band range Reference-only band range Usable band only The claps were clean and consistent. They were clearly above the background noise. The main decay and reflection results are reasonably reliable. The main room result is usable. Treat some details cautiously. The measurement conditions limited the result. Try again in a quieter room if possible. One clap was used to avoid unnecessary repetition. Overall decay is available, while consistency and repeating-reflection confidence remain limited. Pass Caution Limited Automatic microphone processing was reported as off. Device-level processing may still vary. Automatic microphone processing was reported as active, so the decay tail should be treated as a practical estimate. The browser did not report all microphone-processing settings. Use the result as a practical room check. Treat one of the opposing hard surfaces with a curtain, bookshelf or absorptive material, then test again. Regular repeated reflections often become weaker when one parallel surface is broken up or softened. Add soft material to one large hard surface, then repeat the same check. Change one thing at a time so the before-and-after curves remain easy to compare. This space has a long reflective response. Move to a smaller or softer room if the goal is clean speech or recording. If you must use this space, work close to the microphone and compare again from the actual recording position. Turn off nearby fans, ventilation, computers or other continuous noise sources and test again. Lower background noise gives the test more room to follow the decay tail. Move the recording or listening position away from corners and nearby walls, then compare. Built-in microphones are less reliable at low frequencies, so use the change rather than the exact band as the guide. The room already works fairly well. Try one small change at a time. Keep the device and clap position the same. Then small changes are easier to compare. The saved files include the result summary. Audio is not saved. Summary TXT saved. Image PNG saved. Could not save the result. Please try again. This result is an estimate from a hand clap and a device microphone. Use it to compare changes in the same room. SolAudioLab Room Clap Test Room Check Result Summary Room Use Detailed Room Response Recorded Clap Decay by Band Simple Next Step Note Date Room Name Feature Memo Room Character Estimated Decay Background Noise Room Decay Early Reflections Flutter Echo Measurement Reliability Not entered The decay became shorter. The decay stayed similar. The decay became longer. The repeating pattern became weaker. The repeating pattern stayed similar. The repeating pattern became stronger. The background became quieter. The background stayed similar. The background became louder. The room response improved overall. No clear overall change was detected. The room response became more noticeable.