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.