Channel Mixer (foo_channel_mixer) 0.2 alpha is out.

This plugin allows to (up|down)mix between 1-6 channels.

http://skipyrich.siteburg.com/store/foo_channel_mixer.zip


Post your suggestions and bugreports here.
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crashes at end of song when used with "gap killer", although, skip silence dsp works with it
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crashes at end of song when used with "gap killer", although, skip silence dsp works with it
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There seems to be a minor bug when playing back silence (division by zeros or rounding errors somewhere, perhaps). This might be related to the gap killer problem. The track I noticed this problem with is The Atari's song, "Eight of Nine": there is a long period of silence at the end of the track. Playing that back with the channel mixer enabled results in 100% CPU usage when I reach the silent part (the channel mixer is the only DSP enabled at that point).
Edit: this seems to only appear with "use subwoofer" and "bass redirection" both enabled.
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Interestingly enough though, playing back silence://10 (for example) doesn't result in this CPU usage spike. I can post a FLAC of the ending of the song if it would help.
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I use these two options, because without it, the low frequencies are too powerful--while I'm not familiar enough with this sort of thing to be able to know exactly why, I'm guessing it's because the audio is getting copied to 5 channel instead of just 2, and since each channel still contains a bass component, the speaker's crossover is taking bass from each of the 5 channels--making it louder than it should be.  If anyone can shed more info on this, I'd appreciate it though.
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sub = (left+right)/2 * sub_volume
.....

sub = lowpass( (left+right)/2 ) * sub_volume
left = highpass(left)
right = highpass(right)
.....

Using noise dithering seems to increase CPU usage by a lot--but this could be because foobar has to dither several channels at once though.
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The only way now is to switch to 6ch mode and switch on "Use subwoofer". But when I play a 2ch source with those settings I get the double amount of bass (like zetafunction).
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Thanks for your great work!

I'm going to try it out tonite with my Abit NF7-S v2.0 motherboard. 
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Version: 0.4 alpha

- changed: moved some controls
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Thanks for your great work!

I'm going to try it out tonite with my Abit NF7-S v2.0 motherboard. 
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Why do you wanna do that? Soundstorm converts all sound sources to AC3 in realtime.
I'ts just a matter of pluging in the cable and you'll have sound in all 6 speakers.
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Thanks for your great work!

I'm going to try it out tonite with my Abit NF7-S v2.0 motherboard. 
[a href="index.php?act=findpost&pid=261355"][{POST_SNAPBACK}][/a]

Why do you wanna do that? Soundstorm converts all sound sources to AC3 in realtime.
I'ts just a matter of pluging in the cable and you'll have sound in all 6 speakers.
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negative, I am using the newest drivers, with z-680's with the soundstorm, (Abit-NF7-s V2.0) with the optical cable and with DD live setting you only hear sound on the channels foobar is using, so with channel mixer you can play with 2 to 5.1 sound, without it and with no hardware acceleration its 2 channels, with hardware its 4. 

The plugin lets me (turning hardware acceleration off) up mix to 5.1, turn set the center channel to 0, play with the front and reat channels settings, and play with the bass, my music has never sounded better.

And the only difference between the 5.1 setting snd 5.1 DD live setting is that 5.1 all the channel mixing is done by my 680's and with 5.1 DD live its foobar doing the channel mixing since hardware acceleration is off.
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Thanks for your great work!

I'm going to try it out tonite with my Abit NF7-S v2.0 motherboard. 
[a href="index.php?act=findpost&pid=261355"][{POST_SNAPBACK}][/a]

Why do you wanna do that? Soundstorm converts all sound sources to AC3 in realtime.
I'ts just a matter of pluging in the cable and you'll have sound in all 6 speakers.
[a href="index.php?act=findpost&pid=262230"][{POST_SNAPBACK}][/a]

negative, I am using the newest drivers, with z-680's with the soundstorm, (Abit-NF7-s V2.0) with the optical cable and with DD live setting you only hear sound on the channels foobar is using, so with channel mixer you can play with 2 to 5.1 sound, without it and with no hardware acceleration its 2 channels, with hardware its 4. 

The plugin lets me (turning hardware acceleration off) up mix to 5.1, turn set the center channel to 0, play with the front and reat channels settings, and play with the bass, my music has never sounded better.

And the only difference between the 5.1 setting snd 5.1 DD live setting is that 5.1 all the channel mixing is done by my 680's and with 5.1 DD live its foobar doing the channel mixing since hardware acceleration is off.
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Hmm.. Soundstorm does AC3 encoding realtime. (No other soundcard does that.)
I'm not sure thats what you're doing.

Well, I also have an optical cable between my computer and my Home Cinema Receiver (Yamaha RX-V596RDS).
Works like a charm.

My brother have the same setup, he recently bought a Yamaha RX-V650 Reciever (and some new speakers), and voilá..
No matter what sound is playing, windows, Winamp, Foobar, MPC, WMP, PVR-250 (TV-Card) whatever.. Sound in all 5.1 (7.1+2 in his case) speakers.
All sound is digital in AC3.

Maybe its something funky with your speakers? 

Edit: I have the exact same mobo as you aswell.
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I only get full 5.1 with everything on when I have my output set to 5.1 in NV Mixer and have my z-680's set to PL Movie or PL Music.

If you look at the NV mixer you'll see what channels are being output by Soundstorm, you and your brothers recievers are mixing and decoding, because, with creative desktop 5.1 with digital coax out and with Logitech Z680's optical I have gotten the same results.......sound storm will not up mix stereo sound to 5.1 unless you tell it to with hardware acceleration, and if you reghack NV mixer to all add a center channel (if none exists in the source)

Yes it may do AC3 encoding in realtime however that doesnt mean that the out put is in 5.1 sound. Secondly SS only does 5.1 sound so the fact that your brothers get 7.1 +2 sound means that his reciever is take the source audio and upmixing.......