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From: "Dr. Thomas Tensi" <t.tensi@gmx.de>
To: sox-users@lists.sourceforge.net
Subject: SOX mcompand crossover algorithm?
Date: Wed, 24 Jul 2019 21:26:15 +0200
Message-ID: <39b6bf68-3a02-451c-e994-e197f2dd29a3@gmx.de> (raw)
In-Reply-To: <22dd29a2-219a-3fb3-7c0f-2eb2b2e2b4da@gmx.de>

Dear all,


sorry, I am too dumb for digital filters!

The Linkwitz-Riley 4th order filter is not
a 4th order butterworth filter, but a
cascade of two second order butterworth
filters.

Hence I must not take the coefficients of a 4th
order butterworth, but convolve the 2nd order
coefficients instead.  This is correctly done
in sox.

Sorry about the false alarm.


            Best regards,

                   Thomas


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-23 19:44 Dr. Thomas Tensi
2019-07-24 19:26 ` Dr. Thomas Tensi [this message]

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