Paired tones or clicks are defined by an inter stimulus interval (ISI) between pairs of stimuli and the time between the first and second audio stimulus (ISI12). The ISI may be randomized while the time between the first and second audio stimulus is fixed and can not be randomized.
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In Pulsar the inter stimulus interval and the randomization of the interval can be set. The time set for the randomization is added to the inter stimulus interval. The total time between two subsequent stimuli is the sum of the duration of the tone, the ISI and the randomization time. […]
The shape of the tone can be set in Pulsar. Available parameters are the duration, fade in (rise) and fade out (fall) time and the frequency. All time related parameters are set in ms while the frequency can be changed in steps of 5 Hz.