RTAAC Suite includes 7 professional measurement tools designed for acousticians, audio engineers, and occupational health specialists. Each tool is built for laboratory-accurate measurements with an intuitive interface.
SPL Level Meter
Real-time Sound Pressure Level measurement
The Level Meter provides real-time Sound Pressure Level (SPL) measurements with professional-grade accuracy. It displays instantaneous levels, peak values, and comprehensive statistics including Leq, Lmax, Lmin, and percentile levels.
Display Elements
•Current Level - Large display showing instantaneous SPL in dB
•Peak Level - Maximum level recorded since last reset
•A-Weighting (dBA) - Human hearing approximation, OSHA compliance
•C-Weighting (dBC) - Less low-frequency reduction, peak measurements
Time Weighting
•Fast (125 ms) - Quick response for dynamic sounds
•Slow (1 second) - Smoothed response for steady noise
•Impulse (35 ms rise) - Special response for impact sounds
Data Logging
•0.1 second intervals - Up to 8 hours, high-resolution
•1 second intervals - Up to 72 hours, standard logging
•10 second intervals - Up to 2 weeks, long-term monitoring
Max Levels Meter
Threshold monitoring with traffic light indicators
The Max Levels Meter provides threshold-based monitoring with visual traffic light indicators. Perfect for live event monitoring, venue compliance checking, and real-time level management.
Traffic Light System
•Green - Levels within acceptable limits
•Yellow - Approaching threshold limit (warning)
•Red - Threshold exceeded, action required
Monitoring Bands
•Overall Level - Full frequency range monitoring
•Band 1 - Configurable low-frequency band (e.g., 20Hz - 200Hz)
•Band 2 - Configurable high-frequency band (e.g., 2kHz - 20kHz)
Recommended Settings
•Venue Compliance - Local ordinance limit, warning 3-6 dB below
The Noise Dosimeter measures cumulative noise exposure for occupational health and safety compliance. It calculates noise dose, projected 8-hour exposure, and Time-Weighted Average (TWA) per OSHA and NIOSH standards.
Key Measurements
•Dose % - Cumulative exposure as percentage of daily allowable
•Projected Dose - Estimated 8-hour dose based on current exposure
•TWA - Time-Weighted Average in dB(A)
•Leq - Equivalent continuous level
•Lmax/Lpeak - Maximum and peak instantaneous levels
Criterion Levels
•OSHA PEL - 90 dB with 5 dB exchange rate
•OSHA Action Level - 85 dB with 5 dB exchange rate
•NIOSH REL - 85 dB with 3 dB exchange rate
•ACGIH TLV - 85 dB with 3 dB exchange rate
Dose Status
•0-50% (Green) - Safe exposure
•50-100% (Yellow) - Approaching limit
•>100% (Red) - Overexposure, action required
Spectrum Analyzer (RTA)
Octave and 1/3 octave band analysis
The Real-Time Analyzer (RTA) provides frequency-based audio analysis using octave and 1/3 octave band measurements. Essential for room acoustics assessment, HVAC noise evaluation, and audio system tuning.
Analysis Modes
•Octave - 10 bands for quick assessment and NC/NR ratings
•1/3 Octave - 31 bands for detailed analysis and problem identification
NC (Noise Criteria) Curves
•NC-15 to NC-20 - Recording studios, concert halls
•NC-25 to NC-30 - Private offices, conference rooms
•NC-30 to NC-35 - Open offices, libraries
•NC-35 to NC-40 - Lobbies, corridors
•NC-40 to NC-45 - Computer rooms, kitchens
Additional Reference Curves
•NR (Noise Rating) - International standard curves
•RNC (Room Noise Criteria) - Improved criteria for low frequencies
•SIL (Speech Interference Level) - Communication impact assessment
Signal Generator
Precision test signals for system testing
The Signal Generator produces precision test signals for audio system testing, calibration, and acoustic measurements. Includes tones, noise, and sweeps with full stereo output control.
Signal Types
•Tone - Pure sine wave, 20 Hz to 20,000 Hz
•Waveforms - Sine, Square, Triangle, Sawtooth
•Noise - White noise (equal energy per Hz), Pink noise (equal energy per octave)
•Sweep - Linear and Logarithmic frequency sweeps
•Dual Tone - Two simultaneous frequencies for intermodulation testing
Quick Presets
•1kHz Sine - Standard reference tone
•Pink Noise - Broadband test signal for room acoustics
•20Hz-20kHz Sweep - Full bandwidth sweep for frequency response
Output Control
•Level adjustment with peak metering
•Left/Right/Both channel selection
•Phase control for dual-tone mode
Multi-Channel Data Recorder
Professional multi-channel audio recording
The Data Recorder provides professional multi-channel audio recording with comprehensive metadata support. Perfect for multi-microphone measurements, environmental monitoring, and evidence documentation.
Recording Specifications
•Channels - 1 to 16 simultaneous channels
•Sample Rates - 44.1, 48, 88.2, 96 kHz
•Bit Depths - 16, 24, 32-bit float
•File Formats - WAV, AIF, CAF
Quality Guide
•Standard audio - 44.1/48 kHz, 16-bit
•Professional - 48 kHz, 24-bit
•High-resolution - 96 kHz, 24-bit
•Maximum headroom - Any rate, 32-bit float
Features
•Real-time level monitoring per channel
•Clip warning indicators
•Embed calibration data for SPL recovery
•Session organization within projects
Test Wizard
Automated comprehensive system testing
The Test Wizard provides comprehensive audio system testing through guided test sequences with automatic pass/fail evaluation. Generate professional PDF reports with actionable recommendations.
Test Categories
•Audio Input Tests - Microphone level, noise floor, frequency response
•Level Meter Tests - Accuracy, peak hold, time weighting verification