Export Acoustic Measurements

CSV, WAV, JSON, FRD — compatible with REW, Smaart, EASE

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CSV.csv

Comma-separated values with ISO-standard column headers. Universal compatibility with Excel, MATLAB, Python.

SPL MeterRT60STITransfer Function
Column details
SPL: Timestamp, LAeq, LAFmax, LAFmin, LCeq, LZeq, 1/3 octave levels
RT60: Frequency band, T20, T30, EDT, r², C50, C80
STI: STI, CIS, per-band MTF, ambient noise levels
TF: Frequency, Magnitude (dB), Phase (deg), Coherence, Group Delay (ms)
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WAV.wav

48 kHz / 24-bit mono WAV with BWF metadata. Import directly into DAWs, REW, or MATLAB for further analysis.

Impulse ResponseSweep Recording
{}

JSON.json

Full measurement session as structured JSON with schema version, device info, calibration state, and all parameters. Machine-readable for API consumers.

All Measurements
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FRD.frd

Frequency Response Data format — frequency, magnitude, phase. Compatible with REW, ARTA, Smaart, VituixCAD, and speaker design tools.

Transfer Function

Compatible Software

REW 5.x
Room EQ Wizard — FRD, WAV import
Smaart v8/v9
Transfer function FRD import
EASE
Impulse response WAV import
ARTA
FRD and WAV measurement files
MATLAB/Python
CSV and JSON data analysis
Excel/Sheets
CSV spreadsheet analysis

How to Export

1

Measure

Run your measurement using any SonaVyx tool (SPL, RT60, STI, Transfer Function)

2

Select Format

Click the Export button on any measurement page and choose CSV, WAV, JSON, or FRD

3

Download

Your file downloads instantly — processed client-side with WASM, no server upload required

SPL Meter
Measure & Export
Impulse Response
Measure & Export
RT60 Calculator
Measure & Export
STI Measurement
Measure & Export

Professional Acoustic Data Export

SonaVyx processes all measurement data client-side using WebAssembly compiled from Rust, meaning your acoustic measurements never leave your device. When you click Export, the file is generated instantly in your browser and downloaded directly — no server upload, no cloud processing, no data privacy concerns.

CSV Export with ISO-Standard Headers

Our CSV exports use column headers that follow international standard conventions, making them immediately compatible with analysis software. SPL exports include time-stamped A-weighted, C-weighted, and Z-weighted equivalent levels alongside full 1/3-octave band spectra. RT60 exports provide per-band T20, T30, EDT, and regression r-squared values that allow you to verify measurement quality per ISO 3382-1 requirements.

WAV Export for Impulse Responses

Impulse responses are exported as 48 kHz / 24-bit mono WAV files, providing over 144 dB of dynamic range. These files can be loaded directly into Room EQ Wizard (REW) for further analysis, imported into convolution reverb plugins for auralization, or processed in MATLAB and Python for custom acoustic research.

FRD Format for Speaker Design

The Frequency Response Data (FRD) format exports frequency, magnitude, and phase in a simple text format compatible with REW, ARTA, VituixCAD, and other speaker design and measurement tools. This format is the standard interchange format for loudspeaker frequency response data in the pro audio industry.

JSON for Automation and Integration

The JSON export includes the complete measurement session with schema versioning, device information, calibration state, measurement parameters, and all result data. This machine-readable format is designed for integration with building management systems, automated commissioning workflows, and custom analysis pipelines.