Re: [LAU] jamin (was: Albums under a label recorded and/or mixed with Linux)

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From: <fons@...>
To: <linux-audio-user@...>
Date: Sunday, October 3, 2010 - 4:21 pm

On Sun, Oct 03, 2010 at 12:31:59PM +0200, Philipp Überbacher wrote:

> Afaik, -3dB == cutoff frequency, at least with those passive electronic

They are second order, using biquads. With first order this problem
wouldn't exist as 1/(1+s) + s(1+s) = 1.

> So If I understand that and read the

What you see is not the shape of each filter, but how they combine.

The lowpass is of the form 1/(1 + d s + s^2), the higphass is
s^2/(1 + d s + s^2), s = j f / fxover, d > 0.

The nominator of the sum doesn't have any term in s, and the two
others cancel at the xover frequency where s = j. Hence gain is
zero at the xover frequency.

> I also wonder a bit why the 3kHz dip is at 3.1kHz..

Just a small gain difference in the compressors. If you
bypass them the dip is at exactly the set frequency.

Ciao,

--
FA

There are three of them, and Alleline.

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Messages in current thread:
Re: [LAU] jamin (was: Albums under a label recorded and/or m..., Philipp Überbacher, (Thu Sep 30, 5:55 pm)
Re: [LAU] jamin, fred, (Thu Sep 30, 6:54 pm)
Re: [LAU] jamin (was: Albums under a label recorded and/or m..., Philipp Überbacher, (Wed Sep 29, 9:33 pm)
Re: [LAU] jamin (was: Albums under a label recorded and/or m..., Philipp Überbacher, (Sun Oct 3, 10:32 am)
Re: [LAU] jamin (was: Albums under a label recorded and/or m..., , (Sun Oct 3, 4:21 pm)