SNB Meters

Sound Meter Pro transforms your iPhone into a professional audio measurement tool. Whether you are a musician checking venue acoustics, an audio engineer calibrating equipment, or simply curious about noise levels around you, this app delivers accurate and comprehensive sound analysis. PROFESSIONAL METERING SYSTEMS Choose from 7 different metering standards used by audio professionals worldwide: Decibels (dB SPL) - Measure environmental sound pressure levels from whisper quiet to rock concert loud LUFS - Broadcast-standard loudness measurement with both momentary and short-term readings, following ITU-R BS.1770 specification Peak Level - Track instantaneous signal peaks in dBFS with clipping detection RMS Level - Monitor average power levels with 300ms integration time VU Meter - Classic analog-style metering with authentic ballistics, configurable reference levels (Classic, EBU, Digital) Crest Factor - Analyze dynamic range by measuring the ratio between peak and RMS levels Signal-to-Noise Ratio - Evaluate signal quality against background noise with intelligent noise floor tracking 9 VISUALIZATION STYLES Swipe between different meter displays to find the view that works best for your needs: Bar Meter - Clean vertical level indicator with peak hold Arc Meter - Elegant curved gauge display LED Meter - Segmented display inspired by hardware meters Spectrum Analyzer - 32-band FFT frequency analysis from 20Hz to 20kHz Curve Analyzer - Smooth frequency response visualization History Graph - Real-time scrolling level history Stereo L/R Levels - Dual channel level meters Goniometer - Professional stereo image vectorscope Stereo Width Analysis - Correlation and width measurements RECORDING AND HISTORY Record measurement sessions to track sound levels over time. Each recording captures: Minimum, maximum, and average levels Full sample history for detailed analysis Both dB and LUFS measurements BUILT-IN TONE GENERATOR Generate precise test tones for speaker testing, hearing tests, or equipment calibration: 3 independent oscillators for complex tones Frequency range from 1Hz to 22kHz 6 waveform types: Sine, Triangle, Sawtooth, Square, Pulse, and White Noise Adjustable pulse width for PWM sounds Master volume control PROFESSIONAL CALIBRATION Fine-tune measurements for accuracy: Individual calibration offsets for each metering type 32-band frequency response calibration for spectrum analyzer Stereo channel balance calibration Built-in calibration presets for common microphone types FLEXIBLE AUDIO INPUT Works with various audio sources: Built-in iPhone microphone Bluetooth headsets and microphones USB audio interfaces Wired headset microphones ADDITIONAL FEATURES Multiple visual themes with dark and light options Full-screen meter mode for easy viewing Keep screen awake option for continuous monitoring Portrait and landscape orientation support Real-time sample rate and input device display Quality warnings for limited-bandwidth inputs Sound Meter Pro is designed for anyone who needs reliable sound measurement, from casual users checking noise levels to professionals requiring broadcast-standard metering. Download now and discover the true sound of your environment.