From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugtrack@alsa-project.org Subject: [ALSA - lib 0000157]: Integration of Matrix Mixer (a GPL stereo --> 5.1/Dolby Surround/ProLogic upmixing filter) Date: Thu, 25 Nov 2004 14:05:47 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from bugtrack.alsa-project.org (gate.perex.cz [82.113.61.162]) by alsa.alsa-project.org (ALSA's E-mail Delivery System) with ESMTP id B4612166 for ; Thu, 25 Nov 2004 14:05:47 +0100 (MET) Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org A NOTE has been added to this issue. ====================================================================== ====================================================================== Reported By: djtm Assigned To: ====================================================================== Project: ALSA - lib Issue ID: 157 Category: mixer Reproducibility: sometimes Severity: feature Priority: normal Status: new ====================================================================== Date Submitted: 03-24-2004 16:04 CET Last Modified: 11-25-2004 14:05 CET ====================================================================== Summary: Integration of Matrix Mixer (a GPL stereo --> 5.1/Dolby Surround/ProLogic upmixing filter) Description: "MatrixMixer - is a DirectShow filter to upmix any stereo source to multiple speakers." It is published under the GPL2 and written in C++. Homepage: http://matrix-mixer.sourceforge.net. Source Download: http://belnet.dl.sourceforge.net/sourceforge/matrix-mixer/matrix_mixer_0_30b_src.zip It does a really good job on windows systems for movies as well as music. I think this is a big improvement for ALSA, as all people with any kind of surround sound or good headphones will love this. ====================================================================== ---------------------------------------------------------------------- djtm - 03-28-04 20:14 ---------------------------------------------------------------------- There should be no license problem, as the main part doesn't correlate with AC3 and it's all pubished under GPL and developed without using patented knowledge. The main part is upmixing any stereo source to 5.1 surround. And that means for example a stereo MP3 is upmixed to have 5.1 sound by cleverly distributing the sound over the 6 speakers. It also works for stereo AC3s but they are not decoded by the matrix mixer. tiwai - You probably confused it with AC3filter by the same author. ---------------------------------------------------------------------- djtm - 11-25-04 14:05 ---------------------------------------------------------------------- It has no correlations with AC3. Has someone found interest in porting it? If you need a motivation try it out on a windows system and see how well it works - both with good headphones or with a surround system. Issue History Date Modified Username Field Change ====================================================================== 03-24-04 16:04 djtm New Issue 03-24-04 20:10 djtm Issue Monitored: djtm 03-28-04 17:43 tiwai Note Added: 0000713 03-28-04 20:14 djtm Note Added: 0000714 11-25-04 14:05 djtm Note Added: 0002589 ====================================================================== ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/