Abstract
A new IEEE-488 controlled experimentation set-op for psychoacoustic research
was put into use. Three devices of this set-up were our own developments,
si nce there were no suitable olles colllmercially available. The 'Parallel Timers'
and the 'Fourth-dB Attenuators' were developed to manipulate the stimuli present.
ed to the subjects. The first device is a set. of four timer modules which
produce programmable pldses to an accuracy of 0.1ms. They are used to enable
and disable audio switches and control events ill the stimulus presentatio n. The
'Fourth dB Attenuaton!' are used for a programmable attenuation of stimuli in
0.25dB steps to an accuracy of 0.1dB.
Another part of the set-up is the 'Reaction Recorder'. This is a device to
collect reactions, as well as reaction times, from subjects. A maximum of eight
subjects can be handled by one recorder.
Original language | English |
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Journal | IPO Annual Progress Report |
Volume | 124 |
Issue number | 128 |
Publication status | Published - 1988 |