The VideoLAN Forums

Hi,

an option which mixes the .1 LFE channel into the two front channels when listening to 5.1 sound on 5 speakers (no subwoofers) would be very nice to have.

Regards
Olaf

Does anybody know what the current VLC version does with LFE when in analog 4 speaker mode? (without a subwoofer)

I have been running 4 speaker mode and have NOT noticed lack of bass. Is it possible that the current version already downmixes the low freqs into all speakers????

cheers.

Hi,

an option which mixes the .1 LFE channel into the two front channels when listening to 5.1 sound on 5 speakers (no subwoofers) would be very nice to have.

Regards
Olaf

I am new to vlc. I use 4 floorstanders wothout a sub and would love to be able to mix the lfe over all 4 channels not only the fronts. This works really well in zoomplayer with ac3filter and being able doing the same with vlc would be great as it plays some hd ts files I cant get to work with zp very well.

peter

Hi,

an option which mixes the .1 LFE channel into the two front channels when listening to 5.1 sound on 5 speakers (no subwoofers) would be very nice to have.

Regards
Olaf

I'm using VLC on a Mac with a Terratec Phase 26 USB sound card. For DVD viewing this soundcard can only be connected to my amplifier over the 6-channel analog connection (ac3 passthrough over sp/dif is not supported by the soundcards firmware).
As I don't own a subwoofer, but a rather good 5 channel speaker setup with two large front speakers and small center/surround speakers, an option in VLC to mix the LFE-channel to the two front channels would definitely be a huge improvement for me.

Or even better: it would be great beeing able to mix arbitrary output channels to specific speakers. Another requirement would be to have the same output channel added to different speakers. Is there any chance this may get implemented?

Regards,
McBrown

I have been running 4 speaker mode and have NOT noticed lack of bass.

This does not mean that the LFE channel is mixed with others. It just means that you are listening to something where the LFE channel carries little if any signal.

You see, the LFE channel does not carry all bass frequencies. Bass frequencies are carried by their respective channels. Just effects are carried through LFE (LFE=Low Frequencies Effects). Often, the LFE is just empty.

Due to my audio speaker system I also miss the option to add the LFE Signal to the 2 front speakers.

That would be very nice =)

Regards
Dahlen

I would also very much like to see this feature. Vlc works and sounds great for 6 channel files, but when I play 4 or 2 channel files I essentialy loose all bass and the center channel (also the rear channels if 2 channel file). Thanks and best regards.

For me, it's the only option that's missing and would really love to have this, but seeing how old this thread is, we can't really hope much, can we? I'd pay for the option!

Yeah I know what you mean. I remeber when I was using PowerDVD and it had this option but is has been awhile so I don't thinks of using it anymore. Why is that CloudStalker?

Second(ed)

Ok, we need someone to code the audio filter.

Does the Audio Device "2 Front 2 Rear" not effectively do the same thing (minus the center), or does that just drop the center and LFE channels?

Arite.

Not quite. I think that the "2 Front 2 Rear" option only spits a stereo signal 4 ways whereas LFE (Low-Frequency Effect) will take the subwoofer signal and mix it with the 2 front channels (not recommended for small speaker though).

I tried the "2 Front 2 Rear" on a 5.1 sample and it outputted the SL, FL, FR and SR channels in the correct speakers, however didn't output the LFE (or at least from what I could tell). Perhaps it uses the "trvial.c" mixer plugin which just drops the unwanted channels.

Arite.

This post is 3 years in the making? Wow.

So what's the verdict? LFE goes where at this point?????

Anybody know? Thanks!

AFAIK the issue hasn't changed. Currently there isn't any downmix/upmix matrix available that users could configure.

Almost 5 years since my original post, still hoping for the implementation

Code it !

Did you try 1.1 ?

hate to drag up a very old thread but it would be awesome to have some kind of custom matrice options
with xp/vista i used WMP + ffdshow, which seams (at least to me) to make WMP as flexible as vlc, and in some ways even more so
ffdshow's great but unfortunately it doesn't work so well under Win7
one thing i loved about ffdshow was custom audio matrices (think that's what they're called) which let me downmix 6ch's to 4 (L,C,R,LFE), which sounds so much fuller than plain ol' stereo
*finger's crossed*

it would be awesome to have some kind of custom matrice options

Indeed.
+1

this is the only think witch is keeping me from using vlc over boxee as my main media player

Have you tried to enable downmixing in your sound driver? I tell my VLC to make an 5.1 output and the Realtek software does the downmixing to my 4.0 quadrophonic setup quite fine, as it should be. Surely, such a feature in VLC would be useful but in my opinion not the "proper" way as this downmixing would be only for one application and not the hole system.