Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: foo_dsp_downmix (Read 51814 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

foo_dsp_downmix

Reply #25 –
I don't know if phase shifting is needed as rear channels aren't downmixed or else

ffdshow is constantly developed. the latest is from dec.2009, but search other site not sourceforge

eac3to is also tool you may try for batch processing, for example:

eac3to 8ch.wav out.wav -down2 -phaseshift

foo_dsp_downmix

Reply #26 –
This needs to get updated for the latest version.

foo_dsp_downmix

Reply #27 –
It seems the downloadlink in the first post is dead and the only place I found so far with a working downloadlink is THIS one (version 0.2).
Perhaps I'm looking in the wrong place, but otherwise it may seem [a href='index.php?act=findpost&pid=473785']tebasuna51's post[/a], with some useful proposals, is completely ignored.

I was wondering... https://en.wikipedia.org/wiki/Matrix_decode...oding_.282:5.29 tells me the DPL2 matrix, which foo_dsp_downmix also seems to be using (except that √½ ≠ 0.7070), is as follows:
1   0   0.7071 (√½)   0.8165 (√⅔)   0.5774 (√⅓)
0   1   0.7071 (√½)   0.5774 (√⅓)   0.8165 (√⅔)
But https://en.wikipedia.org/wiki/Dolby_Pro_Log...coding_matrices tells me the DPL2 matrix is:
1   0   0.7071 (√½)   0.8718 (√19/25)   0.4899 (√6/25)
0   1   0.7071 (√½)   0.4899 (√6/25)    0.8718 (√19/25)

Which one is the right one?

Furthermore, is there a way to determine if Phase Shifting is necessary for DTS?
 

Re: foo_dsp_downmix

Reply #29 –
It seems plugin doesn't work with modern versions of foobar2000. No downmix is done.

Re: foo_dsp_downmix

Reply #30 –
Quote from: Rollin on
It seems plugin doesn't work with modern versions of foobar2000. No downmix is done.
Use channel mixer http://skipyrich.com/wiki/Foobar2000:Channel_Mixer
( in channel mixer general tab output select 6 channels & in Upmix tab select Mode Off)
before  foo_dsp_downmix in the chain and it will work.

Re: foo_dsp_downmix

Reply #32 –
From what I have understood  the plugin needs FL FR C LFE BL BR  for it to work.
So you need to map SL SR to BL BR.
Channel Mixer does the mapping.
You could also use the Matrix Mixer.