Re: [LAU] [Sort of OT] Ringing in filters

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To: <linux-audio-user@...>
Date: Wednesday, May 12, 2010 - 8:16 pm

On Wed, May 12, 2010 at 09:44:58PM +0200, Fons Adriaensen wrote:

Some time ago, Julien Claassen forwarded to me the
results of his exchange with Fons regarding reasonable defaults for
a three-band mastering network for Nama.

As Fons writes here, the sum of the bandsplitting filters
is unlikely to add up to the original signal, however
we did adopt what we believe to be a reasonable compromise,
with just a couple dB error.

I'm appending the default settings for the LADSPA effects
we are using. Each of the low/mid/high branches gets a compressor
and a spatialiser.

+-- low --+
mix ----> eq ---+-- mid --+-- boost ---> output
+-- high -+

You could create a similar network in Ardour or any other
sufficiently flexible software.

It might be worth experimenting with some A/B comparisons.
(Might be nice to have a program that can randomly cross
fade a couple signals with a beep indication. The listener does a
blind comparison, inputting his opinion at the keyboard.
Afterwards the program correlates the inputs with the
signals.)

eq: Parametric1 1 0 0 40 0.125 0 0 200 0.125 0 0 600 0.125 0 0 3300 0.125 0

low_pass: lowpass_iir 106 2

mid_pass: bandpass_iir 520 800 2

high_pass: highpass_iir 1030 2

compressor: sc4 0 3 16 0 1 3.25 0

spatialiser: matrixSpatialiser 0

limiter: tap_limiter 0 0

Regards,

Joel

--
Joel Roth
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Messages in current thread:
[LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Tue May 11, 9:43 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 11, 10:11 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Tue May 11, 10:36 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Tue May 11, 11:35 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 11, 11:19 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 1:16 am)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Wed May 12, 4:55 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 12:41 am)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 9:11 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 6:32 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 7:44 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 9:01 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 8:44 am)
Re: [LAU] [Sort of OT] Ringing in filters, Joel Roth, (Wed May 12, 8:16 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Thu May 13, 8:00 am)
Re: [LAU] [Sort of OT] Ringing in filters, Joel Roth, (Mon May 17, 9:14 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Mon May 17, 9:31 am)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Tue May 18, 8:55 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Folderol, (Tue May 18, 9:03 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Patrick Shirkey, (Mon May 17, 9:52 am)
Re: [LAU] [Sort of OT] Ringing in filters, Ken Restivo, (Wed May 12, 8:04 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Jörn Nettingsmeier, (Mon May 17, 9:55 am)
Re: [LAU] [Sort of OT] Ringing in filters, Garry Ogle, (Mon May 17, 8:13 am)
Re: [LAU] [Sort of OT] Ringing in filters, Erik de Castro Lopo, (Tue May 11, 11:46 pm)
Re: [LAU] [Sort of OT] Ringing in filters, Fons Adriaensen, (Wed May 12, 8:52 am)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 1:00 am)
Re: [LAU] [Sort of OT] Ringing in filters, Chris Cannam, (Wed May 12, 9:09 am)
Re: [LAU] [Sort of OT] Ringing in filters, Chris Cannam, (Thu May 13, 7:47 am)
Re: [LAU] [Sort of OT] Ringing in filters, Mark Knecht, (Wed May 12, 3:05 pm)