[Don Pearce]

On 27 Apr 2007 11:23:18 -0400, (Scott Dorsey) wrote:

Mark wrote:

You can't fix a time issue with a frequency fix. It's like pushing
down a ping pong ball into a bucket of water with your thumb, it just
keeps rolling around it. Someday the minds of dsp will realize this.

Time response and frequency/phase response are just two orthogonal
views of the same thing. For every frequency/phase response, there is
one and only one time response that is associated with it.

No. This is only true in a minimum phase system. Rooms and speakers
are not minimum phase. Electronics usually are, though.
--scott

Speakers are generally minimum phase. Each resonance is a mass and a
compliance (equivalent to an L and a C in electronic terms) and can be
individually corrected with electronic components or DSP.

Rooms are generally not resonant, apart from a single Helmholz
frequency related to room volume and a doorway.

d

--
Pearce Consulting
http://www.pearce.uk.com