On Thu, 2010-07-22 at 20:22 +0200, Ralf Mardorf wrote: > On Thu, 2010-07-22 at 10:52 -0700, Fernando Lopez-Lezcano wrote: > > On Thu, 2010-07-22 at 14:01 +0200, Ralf Mardorf wrote: > > > On Thu, 2010-07-22 at 01:04 +0200, Arnold Krille wrote: > > > > We are not talking about 5.1 or 7.1 here. These suck big time. > > > > > > > > We are talking about ambisonics vs. binaurals vs. simple stereo here! > > > > > > Ok, I noticed this. > > > > > > Fon's AmbDec is the player for the files from > > > http://www.ambisonia.com/?! > > > > > > I guess a friend who lives near to my home has at least 8 outputs for an > > > Envy24 sound card and at least a JBL 5.1 setup, so the 5.1 speakers > > > could be used for a minimalist ambisonics. > > > > Yes. Fons ships an ambdec configuration for playing in a 5.1 setup (it > > is not optimal because the back speakers in a 5.1 setup are too far > > apart but it works - I use it at home). Of course it assumes that the > > 5.1 setup is correct. This link has a diagram of the speaker angles: > > > > http://de.wikipedia.org/wiki/5.1 > > > The speakers of the 5.1 system should just be used, because they are 5 > of the same type and because there are equal amps for the speakers. > There's no need to keep > http://upload.wikimedia.org/wikipedia/de/thumb/4/4e/ITUKreis_Ruhnke.jpg/300px-ITUKreis_Ruhnke.jpg, > if the speakers should really be placed correctly for 5.1 at the friends > living room at the moment.
I'm not sure I understand. The 5.1 ambisonics decoder in Ambdec can decode to that arrangement and it is pretty good. You could try that before moving the speakers around. > If possible I would prefer to replace them in a way that's good for > ambisonics. > ... > IIUC 4 speakers could be set up in a quadrate with "front" at positiv-x > direction and the listener has to be in the middle of the quadrate. Yes, you could move them into a square, use only four and use the square decoder. A 5.1 setup can be used to play up to second order ambisonics, a 4 channel square can only play first order ambisonics. Most of the recordings in ambisonia.com are first order (but I think there are a few higher order as well). See this for another example of ambisonics at home: http://stackingdwarves.net/public_stuff/linux_audio/ambi_at_home/joern_nettingsmeier-ambisonics_at_home.pdf -- Fernando > Maybe there will be 8 similar speakers and amps, but regarding to the > sound card the limit is 8 channels. I guess somewhere on the ambisonics > website there will be some text and graphic about such setups. _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev