Any PC-based psychoacoustic tests?

[Andrew Simpson <andrew@xxxxxxxxxxxxxxxxxxx>]

We are carrying out some research on dyslexia in children.
This testing involves travelling to schools rather than asking
subjects to come to us; consequently we need reasonably portable
testing equipment.  We would like to include some simple
psychoacoustic tests and would like to know if anyone has done
something similar, has any software that we could use, or knows
of software around that would allow measurement of:

1) gap detection thresholds
2) frequency difference limens
3) frequency dls for fricative-like stimuli.

Thanks for any help/advice.

Andrew Simpson

Phonetics and Linguistics           |  Tel. +44 71 380 7777 x5004
University College London           |  Fax  +44 71 383 0752
Wolfson House, 4 Stephenson Way     |  E-Mail: andrew@phon.ucl.ac.uk
London NW1 2HE                      |