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
_______________________________________________
Sox-users mailing list
Sox-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/sox-users
prev parent reply index
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]
Reply instructions:
You may reply publically to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.sourceforge.net/lists/listinfo/sox-users
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=39b6bf68-3a02-451c-e994-e197f2dd29a3@gmx.de \
--to=sox-users@lists.sourceforge.net \
--cc=t.tensi@gmx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
sox-users@lists.sourceforge.net unofficial mirror
Archives are clonable: git clone --mirror https://public-inbox.org/sox-users
Newsgroups are available over NNTP:
nntp://news.public-inbox.org/inbox.comp.audio.sox
nntp://ou63pmih66umazou.onion/inbox.comp.audio.sox
nntp://news.gmane.org/gmane.comp.audio.sox
note: .onion URLs require Tor: https://www.torproject.org/
AGPL code for this site: git clone https://public-inbox.org/ public-inbox