Re: [LAU] ABX test invite

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To: <linux-audio-user@...>
Date: Saturday, April 6, 2013 - 12:44 am

On Fri, 2013-04-05 at 22:50 +0000, Fons Adriaensen wrote:

And you found a procedure to select 4 matching mics? IMO finding more
than 2 mics that match is nearly impossible. A stereo pair for sure must
not be that perfect. I believe that you find a procedure to select mics
by measurements, but I have doubts that there is a capsule vendor that
is that good, that you can find 4 double sided large-membrane capsules
that match. If you limit the characteristics, IOW if only one side is
important, or you use electret condensors and in addition without tubes,
this might be possible, but IMO selecting double-sided large-membrane
tube microphones can be done best by listening and only for stereo
pairs. Resp. you can find 20 mics that match, it's just a question of
time and money ;).

For private home recording IMO it's possible to get relatively good
results with elCheapo mics that don't match. But that's home recording,
nothing you can sell.

I'm thinking about microphony because any thing in a sound chain, e.g. a
codec, could cause panorama issues. If there's a little bit loss, it
could be that the sounds of the instruments still do sound equal, but
when you listen by headphones the lossless mix might surround you, while
loss that is inaudible for the instruments, could cause that the sound
of the recorded room doesn't surround you anymore, but seems to come
e.g. more from the front above. I'm not talking about 2D or 3D, but
profan stereo recordings, that involuntary become 2D or 3D by loss.

FWIW I'm only experienced with stereo, not with 2D or 3D and I guess
most engineers are inexperienced with 2D and 3D, however, assumed MP3
can be used for stereo, it would be interesting to know, if MP3 or
another codec with inaudible loss, is able to keep the mix for a real 2D
or 3D recording. I don't know how data reduction does work, but I guess
there's an effect similar to a compressor (the effect app or device).
You can link the compression for the left and right channel and you can
compress the left and right channel individually.

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Messages in current thread:
[LAU] ABX test invite, Peder Hedlund, (Wed Apr 3, 11:01 am)
Re: [LAU] ABX test invite, James Stone, (Fri Apr 5, 7:27 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Fri Apr 5, 11:24 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Fri Apr 5, 9:48 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Fri Apr 5, 9:43 pm)
Re: [LAU] ABX test invite, Fons Adriaensen, (Fri Apr 5, 10:50 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 12:44 am)
Re: [LAU] ABX test invite, Peder Hedlund, (Sat Apr 6, 1:03 am)
[LAU] Definition of "sound quality", Ralf Mardorf, (Sat Apr 6, 2:32 am)
Re: [LAU] Definition of "sound quality", Charles Z Henry, (Sat Apr 6, 2:14 pm)
Re: [LAU] Definition of "sound quality", Ralf Mardorf, (Sat Apr 6, 1:19 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 1:22 am)
Re: [LAU] ABX test invite, Peder Hedlund, (Wed Apr 3, 7:07 pm)
Re: [LAU] ABX test invite, Thomas Vecchione, (Fri Apr 5, 5:26 am)
Re: [LAU] ABX test invite, Raffaele Morelli, (Fri Apr 5, 6:26 am)
Re: [LAU] ABX test invite, Peder Hedlund, (Fri Apr 5, 9:02 am)
Re: [LAU] ABX test invite, Thomas Vecchione, (Fri Apr 5, 11:44 am)
Re: [LAU] ABX test invite, Ralf Mardorf, (Fri Apr 5, 1:50 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Fri Apr 5, 2:57 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Fri Apr 5, 6:11 pm)
Re: [LAU] ABX test invite, Felix Homann, (Sat Apr 6, 7:24 am)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 8:53 am)
Re: [LAU] ABX test invite, Peder Hedlund, (Sat Apr 6, 12:01 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 1:06 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Sat Apr 6, 1:56 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Fri Apr 5, 11:51 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 1:43 am)
Re: [LAU] ABX test invite, Ralf Mardorf, (Sat Apr 6, 1:42 am)
Re: [LAU] ABX test invite, Chris Bannister, (Sat Apr 6, 12:05 pm)
Re: [LAU] ABX test invite, Florian Paul Schmidt, (Fri Apr 5, 2:03 pm)
Re: [LAU] ABX test invite, Thomas Vecchione, (Fri Apr 5, 5:06 pm)
[LAU] Fair use laws - Was: ABX test invite, Ralf Mardorf, (Fri Apr 5, 2:11 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Fri Apr 5, 12:43 pm)
Re: [LAU] ABX test invite, Thomas Vecchione, (Fri Apr 5, 5:05 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Fri Apr 5, 5:46 pm)
Re: [LAU] ABX test invite, Paul Davis, (Fri Apr 5, 12:20 pm)
Re: [LAU] ABX test invite, Thomas Vecchione, (Fri Apr 5, 5:04 pm)
Re: [LAU] ABX test invite, Raffaele Morelli, (Wed Apr 3, 11:55 am)
Re: [LAU] ABX test invite, Ralf Mardorf, (Wed Apr 3, 12:42 pm)
Re: [LAU] ABX test invite, James Stone, (Wed Apr 3, 3:14 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Wed Apr 3, 4:11 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Wed Apr 3, 1:28 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Wed Apr 3, 1:35 pm)
Re: [LAU] ABX test invite, Ralf Mardorf, (Wed Apr 3, 3:25 pm)
Re: [LAU] ABX test invite, Peder Hedlund, (Wed Apr 3, 12:29 pm)
Re: [LAU] ABX test invite, Raffaele Morelli, (Wed Apr 3, 12:40 pm)