TIMING

• Temporal resolution of the ear is crucial.
  
  
• Two clicks are perceived monoaurally as one unless they are separated by at lest 2 ms.
  
  
• 17 ms of separation is required before we can reliably determine the order of the clicks.
  
  
• Sounds with onsets faster than 20 ms are perceived as "plucks" rather than "bows".
  
  
• Short sounds near the threshold of hearing must exceed a certain intensity-time product to be perceived.
  
  
• Humans do not perceive individual "phonemes" in fluent speech - they are simply too short. We somehow integrate the effect over intervals of approximately 100 ms.
  
  
• Humans are very sensitive to long-term periodicity (ultra low frequency) - has implications for random noise generation.