| Name | Format | Duration | Size | Date | |
|---|---|---|---|---|---|
| centre.wav | Waveform Audio File Format | 34s | 379KB | 1995-08-02 | |
| corridor.wav | Waveform Audio File Format | 38s | 432KB | 1995-08-02 | |
| east.wav | Waveform Audio File Format | 36s | 405KB | 1995-08-02 | |
| west.wav | Waveform Audio File Format | 40s | 448KB | 1995-08-02 |