On Mon, Dec 31, 2012 at 2:14 PM, Neil <djdualcore(a)gmail.com> wrote:
On Sun, Dec 30, 2012 at 8:28 PM, Fernando
Lopez-Lezcano
<nando(a)ccrma.stanford.edu> wrote:
Just a thought: a speaker with an extended
frequency response (ie: able
to
reproduce ultrasound) could sound
"better" because the high frequency
driver
is more linear and better behaved in the
_audible_ range, and not
because it
is able to reproduce sound above our hearing
limit...
Good point. I don't doubt at all that the speakers in question sound
great.
Neil
It's a simple reason if you have the math background: signals with compact
support in the time domain have infinitely long tails in the frequency
domain. By having more high frequency range, you improve the temporal
response of the transducer.
At the ends of the frequency range, the group delay becomes significant and
shifts some components of the signal more than others. A wide-band
transducer with high damping is better able to reproduce the signals that
you feed it, but also loses some of its capability to deliver power.