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foo_dsp_downmix, downmix AC3/DTS etc to stereo, for use with PL2/FS/etc
pro_optimizer
post Feb 21 2007, 12:31
Post #1





Group: Developer
Posts: 99
Joined: 6-June 06
Member No.: 31515



Hi, here is once again a new DSP for your pleasure.

The purpose of this plugin is to downmix your 5.1 files to matrix-encoded stereo so you can send them to an external PL1/PL2/etc. capable receiver or just if you have to save quite a deal of harddisk space (you know, the compression ratio between dts and downmixed mp3 is nearly 1:10!). In the latter case I would use foo_dsp_fsurround for decoding (trust me smile.gif).

What is the difference to the available downmixers?
- Optional phase shifting. Necessary to handle both AC3 and DTS.
- Very good frequency response for the surround channels (55-24000 Hz @ +/- 0.005db, -3db @ 22Hz)
- Full control over the mixing matrix. Just know what coefficients are used, if it's standards conformant, PL1/PL2 or CS compatible. Customize it if necessary.

Get the plugin here.
You also need libfftw for this.

This post has been edited by pro_optimizer: Aug 12 2008, 03:36
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Posts in this topic
- pro_optimizer   foo_dsp_downmix   Feb 21 2007, 12:31
- - Matyas   Now this is awesome. But to understand it right: T...   Feb 21 2007, 16:28
- - tebasuna51   1) Propossed controls for left panel 'Mixing c...   Feb 21 2007, 19:20
- - pro_optimizer   QUOTE (Matyas @ Feb 21 2007, 16:28) Now t...   Feb 21 2007, 19:50
|- - tebasuna51   QUOTE (pro_optimizer @ Feb 21 2007, 20:50...   Feb 21 2007, 20:34
|- - pro_optimizer   QUOTE (tebasuna51 @ Feb 21 2007, 20:34) Q...   Feb 21 2007, 20:53
- - Matyas   QUOTE When I do the comparisons via headphones, ea...   Feb 22 2007, 09:35
|- - pro_optimizer   QUOTE (Matyas @ Feb 22 2007, 09:35) Why d...   Feb 22 2007, 11:17
- - Matyas   @EQ: Thanks for the link. @SSRC: the question is n...   Feb 23 2007, 09:27
|- - pro_optimizer   QUOTE (Matyas @ Feb 23 2007, 09:27) @EQ: ...   Feb 23 2007, 16:50
- - Hancoque   I have found a strange behaviour when downmixing s...   Apr 25 2007, 17:18
- - klez   For any Reason, this Plugin doesnt Work here... It...   Mar 17 2008, 22:11
|- - pro_optimizer   QUOTE (klez @ Mar 17 2008, 23:11) For any...   Aug 12 2008, 03:33
- - -Tiziano-   Dear Friends Tod S indicated me in this topic: ht...   Dec 31 2009, 10:41
|- - 2E7AH   QUOTE (-Tiziano- @ Dec 31 2009, 10...   Dec 31 2009, 10:47
|- - -Tiziano-   QUOTE (2E7AH @ Dec 31 2009, 10:47) QUOTE ...   Dec 31 2009, 12:00
- - 2E7AH   PL2XDLL.dll and libfftw3f-3.dll in main foobar fol...   Dec 31 2009, 12:18
|- - -Tiziano-   QUOTE (2E7AH @ Dec 31 2009, 12:18) PL2XDL...   Dec 31 2009, 15:13
- - lvqcl   You need PL2XDLL.dll for foo_dsp_pl2, not for foo_...   Dec 31 2009, 16:36
- - -Tiziano-   Yep, thank you really very much 2E7AH has helped ...   Jan 1 2010, 20:32
- - 2E7AH   Do you want to upmix or downmix? You can use matr...   Jan 2 2010, 11:58
|- - -Tiziano-   QUOTE (2E7AH @ Jan 2 2010, 11:58) Do you ...   Jan 2 2010, 12:13
- - 2E7AH   OK, you can try with ffdshow and use downmix to DP...   Jan 2 2010, 12:29
- - 2E7AH   I tried downmixing 8ch with ffdshow Dolby Prologic...   Jan 2 2010, 19:55
|- - -Tiziano-   QUOTE (2E7AH @ Jan 2 2010, 19:55) I tried...   Jan 2 2010, 20:39
- - 2E7AH   I don't know if phase shifting is needed as re...   Jan 2 2010, 21:11
- - Sylph   This needs to get updated for the latest version.   Jul 21 2010, 15:22
- - CoRoNe   It seems the downloadlink in the first post is dea...   Feb 11 2012, 22:03
- - romor   Links are dead. It wasn't trivial to find it, ...   Jun 16 2012, 15:58


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