Sound Meter: SPL & Noise Dose

Sound Meter is a decibel meter (SPL meter) for people who watch noise all day on the job: FOH engineers, AV technicians, event and expo crews, venue managers and safety staff. Prop your phone on the console or the booth table and see at a glance whether the room is over its limit. SEE THE LIMIT, NOT JUST THE NUMBER - Live dB on a meter-style gauge with your venue's alert and limit marked on the scale - Headroom to the limit, always on screen - Rolling LAeq over 1, 5 and 15 minutes: the figure venue limits are usually written against - Stage mode: one giant, color-coded number you can read from across the room, in portrait or landscape - Venue presets for convention halls, concerts, ballrooms, theaters, houses of worship and clubs - Custom SPL alert with hold time, plus vibration when a limit is crossed FREE NOISE DOSE. WE NEVER PAYWALL SAFETY. - Live dose using the OSHA method (90 dB, 5 dB exchange) and the NIOSH method (85 dB, 3 dB) - Always from the A-weighted Slow level, as the methods define it - Estimated time left before 100% dose THE NUMBERS ENGINEERS ASK FOR - A weighting with Fast and Slow time weighting - LAeq, LASmax, LASmin and a true C-weighted peak (LCpeak) - LA10 and LA90 percentiles - Bass index (LCeq minus LAeq): see how much of the level is low end - Live history and spectrum - OVER warning when a sound is louder than your phone's microphone can measure PRO: ONE-TIME PURCHASE, NO SUBSCRIPTION - C, Z and ITU-R 468 weighting - 1/3-octave analyzer, 25 Hz to 20 kHz: find the ringing frequency - Session recording with notes and set markers - Professional PDF report and CSV export - No ads, ever Not ready to buy? Watch one short ad to unlock every Pro feature, with no ads, for 30 minutes. One free Pro Pass a day. BUILT FOR LONG SHOWS - Recordings are saved as you go, so an interrupted show is recovered, not lost - The screen stays on while measuring - Dark screen mode for the mix position - Quick Settings tile to open the meter in one tap - Wear OS companion: live level and dose on your watch - Available in 33 languages HONEST MEASUREMENT - A and C filters are tested against the IEC 61672-1 tolerance tables - 44.1 kHz, 16-bit capture from the standard microphone input, not the voice-call processing path - Calibration wizard: match the app to a reference meter or a 94 / 114 dB calibrator - USB microphone support for external measurement mics PRIVACY Audio is analyzed on your phone and never recorded or uploaded. Sessions store levels only, on your device. Ads never appear during a recording. IMPORTANT Sound Meter is a reference tool, not a certified Class 1 or Class 2 sound level meter or a personal noise dosimeter, and must not be used for legal or regulatory compliance. Phone microphones vary by model and have a maximum level they can measure. For best results, calibrate against a reference meter.