🧪 Experimental Tools
Documentation for tools that are functional but still evolving. Interfaces and file formats may change between releases.
Contents
- Export to MATLAB
- WAV Viewer
- Standalone Setup — running ObieWebApp offline or from a local server (self-documenting, opens its own guide)
Export to MATLAB
ExperimentalConverts FRF files from your Data Folder into a single .mat file that MATLAB can open directly. Supports TRF, AvC, and AvR formats. Complex FRF data is preserved for AvC files so phase information is available in MATLAB.
In Explore and Convolve, .mat FRF files can be loaded directly. Coherence data (if present in the yspec variable) is shown automatically as a dotted overlay in Explore.
Quick start
- Click 📁 Data Folder to select your measurement folder.
- Check the boxes next to the files you want to export.
- Click Export .mat. The file downloads immediately.
Output variables
Each selected file contributes a set of variables named after the file stem (special characters replaced with underscores). For a file named H01.trf:
| Variable | Contents |
|---|---|
| labels | 1×N cell array of all dataset names |
| H01_freq | Column vector of frequencies (Hz) |
| H01_mag_db | Column vector of magnitude (dB) |
| H01_H | Column vector of complex FRF — AvC files only |
Supported formats
| Format | Notes |
|---|---|
| .trf / .trv | Magnitude only |
| .avc | Complex FRF + magnitude; exports _H variable |
| .avr | Magnitude only |
WAV Viewer
ExperimentalLets you browse the raw WAV captures saved by Acquire and inspect the time-domain waveforms and computed FRF for any individual hit. Useful for diagnosing trigger problems, checking for double-hits, and verifying channel assignment.
Quick start
- Click 📁 Data Folder to select your Acquire data folder.
- Select a
.wavfile from the list on the left. - The hammer and microphone time-domain plots update immediately.
- The FRF computed from that single hit is shown in the lower plot.
Plots
| Plot | Description |
|---|---|
| Hammer | Time-domain signal from the impact channel. The trigger threshold is shown as a dotted line; the hammer cutoff as a vertical green line. |
| Microphone | Time-domain signal from the mic channel with its cutoff line. |
| FRF | H1 estimate computed from this single hit, overlaid with coherence. |
Settings
Click Settings in the toolbar to adjust the trigger threshold, pre/post trigger window lengths, and channel swap (hammer on left vs. right input). These settings are shared with Acquire.