Question 1

How do I export an impulse response as a WAV file?

Accepted Answer

SonaVyx exports impulse responses as 48 kHz, 24-bit mono WAV files. After capturing an IR, click the export button and select WAV format. The exported file contains the raw impulse response time series, suitable for import into any audio software. The WAV format preserves the full dynamic range (144 dB with 24-bit resolution) and the exact sample rate. You can open the exported WAV in REW, Room EQ Wizard, ARTA, MLSSA, or any audio editor for further analysis. For auralisation, load the WAV into a convolution reverb plugin (such as Altiverb, Space Designer, or the free Convolver) to apply the room acoustics to any audio signal. SonaVyx performs all encoding in Rust WASM on the client side — no data is sent to the server.

Question 2

What is FRD format and which software can read it?

Accepted Answer

FRD (Frequency Response Data) is a plain-text format containing frequency, magnitude, and optionally phase data. Each line has: frequency_Hz  magnitude_dB  phase_degrees, separated by whitespace. FRD files are compatible with: REW (Room EQ Wizard) for analysis and EQ generation, VituixCAD for crossover design, ARTA/STEPS for loudspeaker measurement, Smaart for import and overlay, and many DSP plugin host applications. SonaVyx exports FRD from both transfer function measurements and FFT-derived frequency responses from impulse responses. The export includes a header with measurement metadata (date, sample rate, FFT size, smoothing). Import the FRD into your preferred tool for further analysis, crossover design, or comparison with other measurements.

Question 3

Can I import impulse responses from other measurement tools into SonaVyx?

Accepted Answer

SonaVyx currently supports WAV file import for impulse responses. Most measurement tools export IRs as WAV files: REW (File → Export → Impulse Response as WAV), ARTA (Export → Impulse Response), Smaart (Transfer → Save → WAV), MLSSA (Export IR), and Dirac (File → Export). Ensure the exported WAV is at a standard sample rate (44.1 kHz or 48 kHz) and contains the complete IR including the reverberant tail. SonaVyx will analyze the imported IR to extract RT60, C50, C80, D50, Ts, and other parameters. This lets you use SonaVyx as an analysis tool even if the original measurement was captured with different hardware or software. Drop the WAV file onto the IR analysis page to begin analysis.

Question 4

What is the JSON export format and what data does it include?

Accepted Answer

SonaVyx JSON export contains a complete measurement session with all computed parameters. The schema includes: a version field for forward compatibility, device information (browser, sample rate, microphone), calibration data if applied, measurement parameters (FFT size, window, sweep length, averaging), the raw frequency response arrays (frequency, magnitude, phase, coherence), impulse response metadata (length, sample rate, peak time), computed room acoustic parameters (RT60 per band, C50, C80, D50, Ts, G, STI), problem detection results, and any AI diagnostic findings. The JSON format is ideal for archiving measurements, importing into custom analysis tools, or generating reports in other software. All data stays on your device — export is performed entirely in the browser.

Question 5

How do I create an auralisation file from a captured impulse response?

Accepted Answer

Export the impulse response as a WAV file from SonaVyx. This WAV file IS the auralisation kernel — no further processing is needed. Load it into a convolution reverb plugin: in Logic Pro use Space Designer, in Pro Tools use TL Space, in Reaper use ReaVerb, in Ableton use Convolution Reverb, or use the free HybridReverb2. Route a dry audio signal (anechoic recording of speech, music, or test signal) through the convolution reverb with your IR loaded. The output will sound as if the audio were played in the measured room. For best results, use anechoic source recordings (recorded in a dead room or available from databases like the Openair library). SonaVyx also supports real-time convolution via the Web Audio API ConvolverNode for instant A/B listening within the app.

Question 6

What sample rate and bit depth should I use for IR export?

Accepted Answer

SonaVyx exports at 48 kHz / 24-bit by default, which is optimal for most applications. 48 kHz captures frequencies up to 24 kHz (Nyquist), covering the full audible range plus a margin. 24-bit provides 144 dB of dynamic range, more than sufficient for any room acoustic measurement. For convolution reverb plugins, 48 kHz / 24-bit is the standard format and will be accepted by all major DAWs and plugins. If your DAW operates at 44.1 kHz, most convolution engines handle sample rate conversion automatically. For archival purposes, 48 kHz / 24-bit preserves the maximum quality. Higher sample rates (96 kHz) offer no benefit for room acoustics because there is no useful acoustic information above 20 kHz. Lower bit depths (16-bit) reduce dynamic range to 96 dB, which may truncate quiet reverberation tails.

Question 7

Can I share my impulse response measurements with other users?

Accepted Answer

Yes. Export the measurement as a WAV file (for the impulse response) or JSON file (for the complete measurement session with all parameters). These files can be shared via email, cloud storage, or any file sharing service. The recipient can import them into SonaVyx or any compatible measurement tool. For professional reports, SonaVyx report generator creates a formatted document with measurement results, plots, and a unique certificate hash for verification. The public report link allows clients to view the report without logging in. All measurement data is processed locally on your device, so sharing is entirely under your control — SonaVyx does not store or transmit measurement data unless you explicitly use the cloud venue system.

Question 8

How do I export CSV data for use in a spreadsheet or report?

Accepted Answer

SonaVyx CSV export produces a standard comma-separated file that opens directly in Excel, Google Sheets, or any spreadsheet application. For impulse response data, the CSV includes: frequency (Hz), magnitude (dB), phase (degrees), and coherence for the frequency response, plus RT60 per octave band with T20, T30, EDT, and r-squared values. For SPL data, the CSV includes timestamp, LAeq, LAFmax, LAFmin, LCeq, LZeq, and 1/3 octave band levels. All CSV exports include a header row with column names and metadata comments (preceded by #) with measurement date, device, and settings. The data is formatted for easy import into report templates, compliance documentation, and academic papers.

Impulse Response Export: WAV, FRD, JSON, and CSV Formats for Analysis and Sharing

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