Re: [SurroundSound] Playing 5.1 in a 4.0 setup

I don't know about your soundcard, but most creative cards give 4.0 as
an option in speaker setups. Also, while I don't know how well it
works, VLC give the option to output 2front/2rear on all 5.1 audio.
S

On 1/27/11, Peter Cawthron <peter_cawthron@yahoo.co.uk> wrote:
> Hi Alejandro,
>
>
>
> I do the same as you - nearly all my quad listening is from a PC into a
> Sansui QRX-9001 receiver.
>
>
>
> Most of the time I use foobar with the Matrix Mixer add-in. For 5.1 material
> I usually send 0.5 of the C to both LF and RF, and I send 0.25 of LFE to
> each of LF, RF, LR, RR.
>
>
>
> When you ask about an 'automatic' method you could use a DirectShow filter
> like AC3Filter or ffdshow - although I lost track of what players these work
> with - but all that means is that someone else has chosen the default
> matrix. In AC3Filter the default for its '2/2 - quadro' output is:
>
>
>
> LF comprises L=0.4531 + C=0.3204 + LFE=0.2265
>
> RF comprises R=0.4531 + C=0.3204 + LFE=0.2265
>
> LR comprises LR=0.4531 + LFE=0.2265
>
> RR comprises RR=0.4531 + LFE=0.2265
>
>
>
> You can change the default values in AC3Filter. Something very similar is
> done in ffdshow with a customisable matrix.
>
>
>
> Regards,
>
>
>
> Peter
>
>
>
> From: surroundsound@googlegroups.com [mailto:surroundsound@googlegroups.com]
> On Behalf Of Alejandro Valdez
> Sent: 27 January 2011 3:47 PM
> To: surroundsound@googlegroups.com
> Subject: [SurroundSound] Playing 5.1 in a 4.0 setup
>
>
>
> Hi group, I've a homemade 4.0 quad setup (cheap, but does the job) connected
> to a PC to play my files (DVD-A, FLAC, anything...).
>
>
>
> When listening to 5.1 mixes I found that I'm loosing an important part of
> the audio track, sometimes the voice goes in the center channel of the 5.1
> mix and is missing in the front channels.
>
>
>
> I discovered that using a matrix mixer (a kind of DSP in your media player
> of choice) I can redirect any amount of the center channel to the front
> channels, that works but:
>
>
>
> 1) I don't know if I'm getting the right mix (how much of the center and sub
> channels should I send to the front channels?)
>
>
>
> 2) I would like a player that can convert on-the-fly the 5.1 tracks to a 4.0
> output without any changes in the configuration (I mean automatically).
>
>
>
>
>
> I guess that I'm not the only one in this situation, so how do you solve
> this kind of issues?... any player/plugin suggestions?
>
>
>
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