ASA 126th Meeting Denver 1993 October 4-8

4pPP2. Perception of just-noticeable time displacement of a tone presented in a metrical sequence at different tempos.

Anders Friberg

Dept. of Speech Commun. and Music Acoust., Royal Inst. of Technol., Box 70014, S-100 44 Stockholm, Sweden

Johan Sundberg

Royal Inst. of Technol., Stockholm, Sweden

The jnd for a perturbation of the timing of a tone appearing in a metrical sequence was examined in an experiment, where 30 listeners of varied musical background were asked to adjust the timing of the fourth tone in a sequence of six, such that they heard the sequence as perfectly regular. The tones were presented at a constant interonset time that was varied between 100 and 1000 ms. The average jnd was found to be about 10 ms for tones shorter than about 240-ms duration and about 5% of the duration for longer tones. Subjects' musical training did not appear to affect these values.