RTARC
Real Time Automatic Room Correction
Professional-grade room acoustics measurement and correction app designed for audiophiles, home theater enthusiasts, recording engineers, and anyone seeking accurate sound reproduction.
Precision Measurement
Take precise acoustic measurements using logarithmic sine sweeps to capture your room's complete frequency response. Reveal peaks, dips, and resonances caused by room modes and reflections.
Automatic EQ Correction
RTARC analyzes your measurements and automatically generates parametric equalizer filters. The intelligent algorithm identifies problem frequencies and creates precise filter settings.
Target Curves
Choose from professionally designed target curves or create your own custom response. Available presets include flat response, gentle bass slopes, and cinema curves.
Phase Response Analysis
View detailed phase response data alongside magnitude to understand the complete acoustic behavior of your room and speaker system.
Project-Based Workflow
Organize your work with a project-based system. Each project stores all measurements, correction profiles, and settings for a specific room or speaker system.
20-Band Parametric EQ
Up to 20 fully configurable parametric EQ bands with filter optimization for minimal phase distortion. Export settings for use with external EQ software.
Measurement & Analysis
Take precise acoustic measurements using logarithmic sine sweeps to capture your room's complete frequency response. The app records how sound travels from your speakers to your listening position.
Automatic EQ Correction
RTARC analyzes your measurements and automatically generates parametric equalizer filters to correct your room's frequency response. The intelligent algorithm identifies problem frequencies and creates precise filter settings to smooth out peaks and fill in dips.
Target Curves
Choose from professionally designed target curves or create your own custom response curve. Available presets include flat response for critical listening, gentle bass slopes for music enjoyment, and cinema curves for home theater systems.
Getting Started
Create Project
Create a new project for your room
Position Microphone
Position your device or external microphone at your listening position
Measure
Play the measurement sweep through your speakers
Review
Review the frequency response chart
Select Target
Select a target curve
Generate Filters
Generate correction filters
Apply
Apply the EQ settings to your audio system
Ideal For
Home Theater
Optimize your surround sound system for accurate movie reproduction with proper bass management and clear dialogue.
Music Listening
Create a flat, neutral response for critical listening or apply house curves for enhanced musical enjoyment.
Recording Studios
Verify monitor accuracy and identify room problems that affect mixing decisions.
Live Sound
Quick room analysis for portable PA systems and venue acoustics assessment.
Hi-Fi Systems
Get the most from high-end audio equipment by ensuring your room enhances rather than degrades the sound.
Technical Specifications
Measurement
- Frequency range: 20 Hz to 20 kHz
- Logarithmic frequency scale
- dB SPL magnitude display
- Phase response in degrees
Analysis
- Impulse response visualization
- Room dimension calculator
- Schroeder frequency estimation
- Before/after comparison
Correction
- Up to 20 parametric EQ bands
- Automatic filter generation
- Minimal phase distortion
- Export to external EQ
Input Support
- Built-in device microphone
- External calibrated mics
- Lightning/USB-C interfaces
- Multiple position averaging
Key Features
Professional Workflow
Organize your work with a project-based system. Each project stores all measurements, correction profiles, and settings for a specific room or speaker system. Compare measurements taken at different positions or times to track improvements.
Privacy Focused
All measurements and correction profiles are stored locally on your device. No data is sent to external servers. No account required. Your room measurements remain private and secure.
Achieve Reference-Quality Sound
RTARC brings professional acoustic measurement capabilities to iOS, helping you achieve reference-quality sound in any listening environment.
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