linuxaudio.org

On Sun, Dec 23, 2012 at 02:48:09PM -0500, Gene Heskett wrote:
> Filters that sharp ring unavoidably. 
That 'ringing' is a complete misnomer. It's *not* the same

thing as would be produced by e.g. a high Q resonance. 
Even if the waveform looks like oscillating before and

after the transient, that does not mean that any energy

at that frequency is actually present. And in in fact it

is *not* present. The 'ringing' you see is the difference

between the full-bandwidth signal and the filtered one.

In other words, it's the part of the signal that was

***removed*** by the filter.
Ciao,
--

FA
A world of exhaustive, reliable metadata would be an utopia.

It's also a pipe-dream, founded on self-delusion, nerd hubris

and hysterically inflated market opportunities. (Cory Doctorow)
_______________________________________________

Linux-audio-user mailing list

Linux-audio-user@lists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-user