From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: James Spencer Newsgroups: gmane.comp.audio.sox Subject: (no subject) Date: Tue, 20 May 2014 15:41:23 +0100 Message-ID: Reply-To: sox-users@lists.sourceforge.net NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============9173947984638650872==" X-Trace: ger.gmane.org 1400597389 17461 80.91.229.3 (20 May 2014 14:49:49 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 20 May 2014 14:49:49 +0000 (UTC) To: sox-users Original-X-From: sox-users-bounces@lists.sourceforge.net Tue May 20 16:49:43 2014 Return-path: Envelope-to: gcas-sox-users@gmane.org X-ACL-Warn: X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-type; bh=PTBBwYWMskEfDWe54x+bLnKGL0FUo/p2kX319EXdgQw=; b=WogLdnTkuDe98xGQos6rqwVdAYc8nfOyF4NDZSHBzrVSF2R3s2SZBGYTggNn6rZ7jR 98msph7hz1+tbMcHPd4HYDU2NTym9K7LfVqmbYK63blVxGLgHnddzJIZL4v8AY0lRP7y PMBUz1TCM0RNJzL4LcJDdGXydboYbbMAyCUwDzLbSyujuzmRJONWQvZLrBXB+jAEbG9u lG9POf+xDTal7JeMoZFCwnFv/PLopVK3UKOaUHv0v1ZN0EinSS5wIWYM+5Um39EFTP0j IVwp1s3fQKb40nn9uPwF9lDjUXHQOPoPoQJu0MgxZIEJ2niWWtdeZt4x5v+8hcrQmwok 9JmQ== X-Gm-Message-State: ALoCoQk0qHHVwnJijJja7iEn0MoXmNYU60XF4EuowAjiDUiBbWDwDxLX/k7X/RfMKRchREiWOn3C X-Received: by 10.224.92.197 with SMTP id s5mr21570424qam.93.1400596903839; Tue, 20 May 2014 07:41:43 -0700 (PDT) X-Spam-Score: 0.9 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 1.0 HTML_MESSAGE BODY: HTML included in message -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1WmlLy-0000Jc-Sh X-BeenThere: sox-users@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: sox-users-bounces@lists.sourceforge.net Xref: news.gmane.org gmane.comp.audio.sox:5545 Archived-At: Received: from lists.sourceforge.net ([216.34.181.88]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WmlMG-0001PR-KM for gcas-sox-users@gmane.org; Tue, 20 May 2014 16:49:36 +0200 Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WmlM5-0001g2-HM; Tue, 20 May 2014 14:49:25 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WmlM3-0001fw-Gv for sox-users@lists.sourceforge.net; Tue, 20 May 2014 14:49:23 +0000 Received: from mail-qc0-f174.google.com ([209.85.216.174]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WmlLy-0000Jc-Sh for sox-users@lists.sourceforge.net; Tue, 20 May 2014 14:49:23 +0000 Received: by mail-qc0-f174.google.com with SMTP id x13so866020qcv.19 for ; Tue, 20 May 2014 07:49:13 -0700 (PDT) Received: by 10.96.21.229 with HTTP; Tue, 20 May 2014 07:41:23 -0700 (PDT) --===============9173947984638650872== Content-Type: multipart/alternative; boundary=089e01538686ed5f8a04f9d5e099 --089e01538686ed5f8a04f9d5e099 Content-Type: text/plain; charset=UTF-8 So I am speculating this happens because of using Ogg Vorbis. I don't know if the effect is intriduced while mixing the 6-channel file (I doubt that), or only when playing it back AFAICT it is introduced when mixing the 6 channel file (FWIW ffmpeg exhibits the same behaviour). In a freshly merged 6 channel file, I've tried remixing the channels into a different order with the result that both the original LFE channel and the new one sound "filtered" and have lost data. Remixing a 7 channel file down to 6 channels also introduces the effect on the 6th channel. -- ----------------------- James Spencer p.ota.to --089e01538686ed5f8a04f9d5e099 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 

So I am speculating this happens because of using Ogg Vorbis.
I don't know if the effect is intriduced while mixing the
6-channel file (I doubt that), or only when playing it back

<= /div>
AFAICT it is introduced when mixing the 6 channel file (FWIW ffmp= eg exhibits the same behaviour).

In a freshly merg= ed 6 channel file, I've tried remixing the channels into a different or= der with the result that both the original LFE channel and the new one soun= d "filtered" and have lost data.

Remixing a 7 channel file down to 6 channels also intro= duces the effect on the 6th channel.

--
=
-----------------------
James= Spencer
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