Professional-grade audio measurement and analysis tools running entirely in your browser. Powered by Rust WebAssembly DSP — no download, no installation, no subscription required.
IEC 61672-1 compliant sound pressure level measurement with A/C/Z weighting
FFT-based frequency analysis with 1/1 to 1/24 octave resolution
Live octave-band spectrum display with spectrograph mode
Dual-channel H(f) measurement with coherence and phase analysis
Room IR capture via swept sine or MLS with Schroeder integration
ISO 3382 reverberation time — T20, T30, EDT extraction
IEC 60268-16 speech intelligibility measurement
IEC 60268-5 speaker frequency response and Thiele-Small parameters
Speaker delay calculation via cross-correlation and distance-to-time conversion
Axial, tangential, and oblique room mode frequencies plus Schroeder frequency
Butterworth and Linkwitz-Riley crossover frequency design
Inverse square law SPL prediction with atmospheric absorption
Speaker cable power loss by AWG gauge, length, and impedance
Sabine and Eyring RT60 prediction with NRC material database
ASTM E413 Sound Transmission Class rating calculation
AI-powered equipment identification via camera using Claude Vision API
Claude-powered sound system health scoring with EQ recommendations
Professional measurement reports with SHA-256 certificates
Split-view frequency response comparison with improvement metrics
All tools are free to use
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