SOUND TOOLS
Online tone generator
Play adjustable tones to explore frequency and waveform. Use very low output, especially with headphones.
Start quietly. Stop immediately if uncomfortable. Volume settings are not calibrated safe levels.
Ready when you are
Playback stops when you leave or hide this tab. Locking the screen may also stop browser audio.
01 / Meter
How to use this tool
- Lower your device volume before starting.
- Choose a frequency and waveform, then start briefly.
- Stop before changing setup; use a sweep cautiously.
02 / FAQ
Frequently asked questions
Is the volume slider a sound-pressure level?
No. It controls digital output; headphone sensitivity and device gain determine actual sound pressure.
What are the limits?
Never use generated tones as a calibrated acoustic reference or turn them up until audible.
03 / IPHONE APP
Keep your noise checks together
dB Pulse: Decibel Meter is for iPhone with iOS 26+. Keep track of daily noise dose, sustained-noise alarms, saved sessions, Lock Screen Live Activity and widgets.
Pro adds advanced alarms, a spectrum analyzer, unlimited history, report export, session notes, supported microphone profile matching and an Apple Watch meter.
Back to the meter ↗