Hi Dave.
The followign is from the CDEX manual. Basically, don't use Joint Stereo
unless you're dealing with very low bit rates like 128kbps. For these files
joint stereo will do some messing with the file to try and enhance the
stereo image of the music.
With the LAME encoder, you can specify how the file is encoded. The default
stereo option is recommended, but at lower
bit-rates, the Joint-stereo or Forced stereo can yield better sound quality.
Stereo: In this mode, the encoder makes no use of potential similarity
between the two input channels. It can,
however, negotiate the bit demand between both channels, i.e. give one
channel more bits if the other contains
silence.
Joint stereo: In this mode, the encoder will make use of a correlation
between both channels. The signal will be
matrixed into a sum ("mid") and difference ("side") signal. For quasi-mono
signals, this will give a significant gain in
encoding quality. This mode does not destroy phase information like IS
stereo that may be used by other encoders.
This setting can be used to encode DOLBY ProLogic surround signals.
force joint stereo: This mode will force MS joint stereo on all frames.
It's faster and it uses some special mid and
side masking threshold.
Mono: This option will forcibly generate a mono file; if the input file is a
stereo file, the input stream will be read as a
mono by averaging the left and right channels.
Kevin
E-mail: [EMAIL PROTECTED]
----- Original Message -----
From: "Dave Marthouse" <[EMAIL PROTECTED]>
To: "PC audio discussion list. " <Pc-audio@pc-audio.org>
Sent: Thursday, May 24, 2007 5:14 PM
Subject: Joint Stereo Question
>I was just playing around with AudioGrabber and saw a term that I am not
>familiar with. That is joint stereo. What is the difference between joint
>stereo and standard stereo? Any information would be appreciated.
>
>
> Dave Marthouse
> [EMAIL PROTECTED]
>
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