FFT Spectrum Audio Analyzer
Transform your device into a professional-grade audio measurement system. Whether you are calibrating home theater speakers, tuning car audio systems, analyzing room acoustics, or troubleshooting sound equipment, this app delivers the precision and features that audio professionals demand.
Professional FFT Analysis
Choose from 4096, 8192, 16384, or 32768 point FFT sizes to balance frequency resolution and response time. Higher FFT sizes reveal fine frequency detail while smaller sizes provide faster updates.
Octave-Normalized Display
Pink noise appears flat on the display, following the standard convention used in professional acoustics measurement. Easily identify frequency response problems and compare to industry standards.
Flexible Smoothing
Select from 1, 1/3, 1/6, 1/12, or 1/24 octave smoothing to match your needs—from quick system overview to precision crossover tuning and detailed speaker analysis.
Decay & Averaging Modes
Multiple visualization modes including time-based decay (0.5s to 8s) for live sound, Peak Hold for maximum levels, and Running Average for stable long-term measurements.
Measurement Tools
Touch cursor for precise frequency and level readout, peak frequency tracking with automatic detection, pinch to zoom for detailed inspection, and adjustable dB scale display.
Save & Compare
Store unlimited spectrum graphs with timestamps. Recall saved measurements as overlays for A/B comparison, use baseline subtraction mode, and organize your measurement library.
Key Features
Use Cases
Home Theater Setup
Measure and balance speaker levels, identify room modes, verify subwoofer integration, and optimize crossover settings.
Car Audio Tuning
Analyze frequency response at the listening position, identify resonances, and tune equalizer settings for optimal sound.
Live Sound
Quick system checks, feedback identification, and real-time monitoring during performances.
Studio Acoustics
Room analysis, monitor calibration, and acoustic treatment verification.
Speaker Testing
Frequency response measurement, driver matching, and crossover design verification.
Education
Visualize sound and frequency concepts for teaching acoustics and audio engineering.
Ideal For
Export & Share
Document and share your measurements. Export high-resolution PNG images to Photos, generate XLSX spreadsheet files with frequency and dB data, and share via email, messaging, or cloud storage.
Calibration
Device-specific microphone calibration ensures measurement accuracy. Adjust the calibration offset to match external reference microphones or compensate for known device characteristics. Supports USB and Lightning audio interfaces.
Privacy Focused
No internet connection required. All processing happens locally on your device. Your audio data stays private.
Professional Audio Measurement in Your Pocket
Download FFT Spectrum Audio Analyzer today and experience professional-grade frequency analysis on your Apple devices.
Download Now