Channel Mixer (foo_channel_mixer) Options

[uberneko]

Hey I love really awesome sounding speakers, but unfortunately I don't have a really awesome speaker set up and no ability to get new ones. I was just wondering, I have an SB Audigy 2 and Logitech X-530 5.1 speakers. What is the best way to get the most out of these speakers?

[skipyrich]

Do I need the matrix mixer?

Hm... Probably, the answer is 'No' at this moment. MM, instead of CM is pure matrix mixer without some 'cool' features of CM - bass redirect, delays, etc...

I wish this plugin could automatically skip sources that are already 6-channel.

If you does not apply stereo expansion, then the only LP/HP filters will be applied to the channels.
I can add a very special checkbox to bypass processing at this very special case, but I don't want to overdose a interface/code, that is already too monstrous... CM is almost dead. MM is the future.

[Rozzo]

[quote name='skipyrich' date='Oct 30 2008, 20:27' post='596543']
[quote name='sandeep108' post='595828' date='Oct 27 2008, 08:52']CM is almost dead. MM is the future.
[/quote]

MM is numeric. I know how to move a cursor left or right, but to get the thing working with numbers and arithmetic calculations is somehow too specialistic. Maybe we'll need son MM presets.
Ys
Rozzo

[elenhil]

I wish this plugin could automatically skip sources that are already 6-channel.

If you does not apply stereo expansion, then the only LP/HP filters will be applied to the channels.

But I do apply it.

BTW, what's that special about MM that makes it superior to CM?

[skipyrich]

Maybe we'll need son MM presets.

Some matrices may be borrowed from http://en.wikipedia.org/wiki/Dolby_Pro_Logic
But note, that there is no phase shifting implemented, therefore use only numeric values.

BTW, what's that special about MM that makes it superior to CM?

Nothing special at this moment, but it will be very special and very customizable

[njnitehawk]

i have been trying to see if all my speakers can play at the same time

not just 2 spaekers

have 7.1 creative lab p7800

someone mentioned foobar2000 with the plungin-channel mixer

but i tried all the steps and it does not appear to work

os-vista 32

realtek sound card
on board a gigabyte m/b

i would like to show a snip of what it states

[Borisz]

I like the Matrix Mixer, though I hope it will have some kind of preset support in the future. I want it to redirect the bass from my stereo tunes to the subwoofer (for a 2.1 setup), but leave alone everything that has more than 2 channels.

Also, how to apply those numbers on the prologic wiki page?

[HexagonSun]

Simply fantastic plugin, perfectly done.

Does anyone know how I could set a shortcut key to open the Channel Mixer panel? I access it so often it would be rather helpful to bind the window to a key.

[blahdy]

Also, how to apply those numbers on the prologic wiki page?

btw, for those looking for some presets for MM, you can use the matrix mixer to upmix stereo to surround yourself (though you don't have the phase shifting ability). I use following values and the real channels fill up quite nicely:

CODE

      FL       FR
FL    1         0
FR    0         1
FC   0.7      0.7
LFE   1         1
BL   0.866   -0.5
BR   -0.5     0.866

EDIT: oh and also, I have Normalize checked OFF with above values..

yet another awesome plugin

This post has been edited by blahdy: Dec 5 2008, 03:07

[Borisz]

>LFE 1 1

wouldn't that add too much volume to the LFE? When I do that (as bass redirection), the vu meter freaks out and I get quite a lot of bass.

[blahdy]

>LFE 1 1

wouldn't that add too much volume to the LFE? When I do that (as bass redirection), the vu meter freaks out and I get quite a lot of bass.

You're probably right, in that case, may be best to turn LFE down. I don't use bass redirection myself so LFE being set to 1L 1R has no effect on me (I use dolby headphone).

[gizbug]

How do we use 4.1 with this plugin?
I see 4 or 5 channel option. Subwoofer is greyed out with 4, and if I select 5, I get an error " Unrecoverable Playback error: Could not open device: unsupported data format: 44100 Hz/16-bit/5channel

[gizbug]

Does no one use this anymore?

[skipyrich]

gizbug, if your soundcard does not mix down from 5.1, I have no answer... Try the Matrix Mixer...

[gizbug]

gizbug, if your soundcard does not mix down from 5.1, I have no answer... Try the Matrix Mixer...

Ok. Using an Auzentech Prelude 7.1. Should downmix.

[IronFly]

i have a strange problem with MM that i don't have with channel mixer.

DSP chain:
Resampler SOX 96000hz
EQ

upmixing to 5.1 from stereo

with channel mixer every channel is perfectly working
with matrix mixer center and LFE are completly muted if both activated.

others channel no problems at all.

asus xonar D2x latest drivers and latest stable release of Foobar.

[skipyrich]

IronFly, I have 4.0 system, so I can't completely test the MM, but I see (using Peakmeter) that all channels are present if the matrix looks like:
L R
L 1 0
R 0 1
C 0.5 0.5
LFE 0.5 0.5
BL 1 0
BR 0 1
so, C & LFE is out from foobar as expected. The only difference between MM and CM in this case, that MM use the new fb2k 0.9 api to mark channels (L,R,BL,etc...), unlike of CM.

(I said too many words but no idea what's happening on your system)...

[IronFly]

i use peakmeter too and the signals are present but i can't have output on Central and LFE, it's very strange.

i used a similar preset to test the 5.1; maybe it's some problem with the xonar d2x.

i will investigate better.


EDIT:

L R
L 0 0
R 0 0
C 0.5 0.5
LFE 0.5 0.5
BL 0 0
BR 0 0

if you use just this two values, you can hear sounds on C and LFE?

This post has been edited by IronFly: Apr 12 2009, 08:49

[year98]

I have a question. My config is like below.
output channel-6 upmix,downmix-off use subwoofer-subwoofer channel bass redirection-full redirection
As you know, this config is for 2.1 channel. Sound is pretty good. I am satisfied with this config.
By the way, do you know ac3filter's bass redirection? My other media players use ac3filter's config with same channel mixer's crossover frequency.
But foobar's bass amout is difinitely differnt from ac3filter's.
So I adjusted channel mixer's subwoofer volume to 2. I dare say two volume same now.
In addition, I tried subwoofer volume to 2 in the upmix tab too. Too much bass...

For same bass amout compared to ac3filger, which tab's subwoofer volume do need to be set to 2?
I want as much as bass without extra gain(distortion).
Does adjusting all to 1 guarantee best sound, or what?

Sorry for my poor English.
Thank you for everything.

[hdamiani]

Hi, I've been checking this thread at some time, and waiting eager for a version to use with my 7.1 channel set. Since I installed the OS Vista I have lost my subwoofer sound. now with this plugin I was able to get that back again, but the side effet is that I lost my 2 channel at middle.

Let me now if there'll be any change that you would build a version that I can full appreciate my 7.1 set?

[sandeep108]

Hi. I was using this plugin, working very well to give me 5.1 ch sound for my mp3s. I changed my PC to an inbuilt Realtek HD Audio on-board solution. In the process I also updated fb2k to latest 9.6.8 from earlier 9.5.6. I have got it to work, but I am getting crackling / distortion from the rear speakers. This also happens when I adjust the sliders. I have tried changing to sound bits from default 16 to 24 and back, but no difference.

If I disable the CM and go back to using default 2>4 in fb2k dsp manager, all 4 speakers work fine, but then I lose on the sub/center.

Is it a problem with CM? Or with the Realtek drivers (v2.26)? Please help. I like the new 9.6.8 and my config with UI panels was quite complicated with 9.5.6. I am not too sure how I can get it all back again.

Is there any other way to use my 5.1 speakers when listening to music?

[skipyrich]

sandeep108, do you use KS? Try DS instead.

[sandeep108]

Thanks for your response. No I deliberately did not install KS (though I was earlier using it in my old PC - not that it appeared to make any difference). I am using the primary sound driver, which would be the DS, I presume?

[sandeep108]

I think the problem I have resolved in the following manner:

1. Set the speaker system to 8ch and now you can actually select rear for the rear. The sound certainly fills out a lot more than setting the rears as sides.

2. The crackling seemed to disappear with disabling and re-enabling DES with the latest Realtek drivers. Possibly disabling the CPU throttling also helped. Since I cannot now notice it, I am not sure whether the latest drivers fixed it or the DES. Most likely the DES, since when I disabled it, there was a brief crackle. Maybe I would need to do this on each boot if it recurs.

But still no native speaker fill option in the realtek sound manager, even in 8ch mode.

[Dragoon123]

1) adding option about "2.1 channel"

General->Output channels: 6
Upmix->Mode: Off
Subwoofer->Use subwoofer: check
Subwoofer->Bass redirection: check

Enjoy

What would I set this to for 4.1?