Ch 9: Temporal Organization in Auditory Perception and Music

Question 1

InterOnset Interval (IOI)

Answer 1

length of time between the onsets of two events

Question 2

Limits of sequence perception

Answer 2

• Sounds separated by more than 1.5 – 1.8 s are perceived as isolated (e.g. slowly dripping tap)
▫ Upper limit of sequence perception
• Sounds separated by less than 100 ms are perceived as a single,
continuous event (e.g. jackhammer)
▫ Lower limit of sequence perception
• Sounds separated by less than 25 ms are perceived as
asynchronous but unordered
• Sounds separated by less than 2 ms are perceived as simultaneous
• Between 25 ms and 100 ms IOI, order detection is possible in some circumstances but generally unreliable

Question 3

Duration

Answer 3

psychological correlate of a span of time

Question 4

Rhythm

Answer 4

pattern of relations among onsets, durations, and

accents of sound events

Question 5

Beat/pulse/tactus

Answer 5

perceived pulsation delimiting equal-duration

intervals, often expressed in inter-onset interval (IOI)

Question 6

Tempo

Answer 6

rate at which beats occur, often expressed in units of

beats per minute (BPM) or metronome marking (MM)

Question 7

Meter

Answer 7

grouping of beats into repeating patterns of accented and unaccented (strong or weak) beats