SMartin Pro · Real-time electroacoustic measurement
The measurement suite: transfer function, RTA, room parameters and loudness.
It turns measurement and reference signals into quantitative indicators and readable graphs: tonal corrections, time alignment, room assessment, target verification and loudness control. In the frequency domain and the time domain.
Transfer function with coherence · ISO 3382 · LUFS (BS.1770 / EBU R128) · ASIO
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What is SMartin Pro
A real-time electroacoustic measurement suite for system analysis, room verification, level control and program monitoring. Its architecture is modular: each module solves a specific task within a rigorous, repeatable measurement workflow.
What sets it apart
Transfer function with coherence
Magnitude, phase and coherence at once, with a delay finder to align in time. Coherence masks what is not reliable, so you measure what can truly be measured.
High-resolution RTA
Spectral analysis from 1/3 to 1/48 octave, with A/C/flat weighting, target curves, peak and average hold, and configurable smoothing.
ISO 3382 room parameters
RT60, EDT, C50, C80, D50, Ts, DRR and ITDG per band, with measurement quality control —dynamic range, noise tail, R² fit— that flags when a figure is not reliable.
Metering and loudness
Peak/RMS, True Peak by oversampling (dBTP), LUFS momentary, short-term and integrated (BS.1770 / EBU R128 style), phase correlation and goniometer.
Pre-flight QA
A continuous check of the measurement chain confirms the conditions are valid —no clipping, enough SNR— before you trust the result.
A verifiable method
Built around measure → interpret → verify. A single measurement rarely settles anything: the workflow pushes you to repeat at several positions and compare trends before correcting.
Use cases
Live sound / PA
System alignment in time, phase and magnitude; EQ with judgment; integration of subs and fills, validated with coherence.
Room acoustics
RT and EDT, clarity and definition per band, early reflections (ITDG) and modal-behavior diagnosis.
Studio / mastering
Spectral balance without the room's influence, mono/phase compatibility, and loudness (LUFS) and True Peak control.
Broadcast / streaming
Verification of deliverables against loudness criteria (BS.1770 / EBU R128 style).
Education
Teaching electroacoustic measurement with rigorous fundamentals and clearly distinguished units.
Forensics / documentation
Level history and exportable reports (PDF/CSV) as technical backing.