ARL STEP Support
User's Manual
The ARL STEP User Manual is available here.
Technical Details
- Conforms to the folowing testing methodologies ITU-R Recommendations
- BS.1116 (small impairments)
- BS.1534 (medium impairments)
- BS.1294 (general testing requirements)
- Performs Two-comparison forced-choice tests with 5- and 7-point grading scale.
- Performs A/B/X forced-choice comparison tests.
- Supports training of subjects for all test methodologies.
- "Evaluation" mode permits informal, fast and easy comparison of several systems
- Seamless switching between audio signals during presentation. Optionally, switching can
be with intervening muting.
- "Loop and Zoom" feature permits careful comparison of segments of audio signals.
- Automatic randomization of presentation on a per-listener and per-signal basis.
- Trial window captures listener responses to file.
- Subjective results can be loaded directly into a spreadsheet for data analysis.
- Supports mono, stereo and 5.1 channel signals.
- Supports 16, 24 and 32 bit word lengths.
- Compatible with all sound cards that provide
- Windows DirectSound driver support
- ASIO driver support
- Supports Microsoft WAV file format.
- Easy to create session file controls all aspects of presentation.
Minimum System Requirements
- 1 GHz Pentium 4 or compatible processor
- 256MB memory
- 1 MB of hard disk space
- Stereo or multichannel audio output card with DirectSound or ASIO support
- Microsoft Vista or Windows XP operating system
Compatible Audio Output Hardware
Audio I/O devices in this table are know to be compatible with STEP.
Column DS indicates whether the device has a Direct Sound driver.
Column ASIO indicates whether the device has an ASIO driver.
For technical assitance: