Teste de ruído de áudio
Meça o ruído de fundo relativo com seu microfone e compare ambientes silenciosos e barulhentos.
Interface de teste
Seu navegador pode pedir permissão após você pressionar Iniciar.Como usar esta ferramenta
- Find a quiet moment and click Start noise test.
- Allow microphone access, then remain silent while the baseline is measured.
- Watch the noise floor and peak values update, and try the test in another location.
- Stop the test when finished to release the microphone.
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Explicação técnica
The analyser computes RMS and peak levels from the microphone signal. The reported dBFS value is relative to digital full scale, not sound pressure level (dB SPL).
Microphone gain, automatic gain control, and device processing vary widely. Results are useful for comparisons on the same device and in the same session, not as calibrated environmental noise measurements.
Solução de problemas
Noise floor stays at zero
Check that the microphone is connected, unmuted, and selected correctly. Some browsers apply aggressive noise suppression that removes quiet sounds.
Readings jump around
Fans, keyboards, traffic, and notifications create short peaks. Observe a longer period and compare averages.
Value is much lower than expected
dBFS is relative to the digital signal, not a calibrated room measurement.
Permission prompt does not appear
Reset the site microphone permission and reload the page.
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