[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Perception of rise/fall times

Actually, sounds with _fast_ onsets and _slow_ decays are judged as _less
loud_ than their time-reversed analogs.  The reverse is true of the inverse.
[Stecker & Hafter (2000) JASA 107:3358-3368]


At 03:31 PM 5/10/01 -0400, Dennis P. Phillips, Ph.D. wrote:
Hi Everyone:

I'd like to thank all who responded to my recent question about asymmetries
in the perceptual effects of rise and fall times.  The responses were
diverse, thoughtful, informative, and often pointed me to references which
I had not previously found.  This has been very helpful indeed. Again, many

For folks who are interested, a "potted" summary would go something like
this.  Sounds with fast onsets and slow decays are judged as louder than
their time-reversed analogs.  Sinusoids with exponential onsets (ramped
sinusoids) have a more tonal quality, and a less hollow, percussive one,
than their time-reversed counterparts (damped sinusoids).  Normal listeners
are more sensitive to switching transients at the onset of a tone than to
those at its offset.  Thresholds for amplitude decrement detection are
comparable to those for increment detection if the decrement is not too
short in duration.  Rise times (plucks and bows) are not perceived
categorically.  In general, these findings point to the perceptual
importance of stimulus onsets (or increments).  Below are a few of the