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I was looking at the stream properties on my copy of Foobar2000 and noticed that there's a difference in my 128kbps MP3 stream compared to another station streaming at the same bitrate. On my stream, the stereo mode was listed as joint stereo. I understand that that can save bits and still sound pretty good. The other station I looked at and found their stereo mode was set to stereo. I can't honestly say I hear any difference. But if a big goal of Breakaway audio processing is to be clean and pure, would the negligible difference between joint and regular stereo be worth sounding "that much" better?
My related question is are these finer settings accessible in an .ini file or something?
PS: Yes, I know this is quite nit-picky, so…
Joint stereo saves space by masking off (mono) any signal which is L-R identical, so you only hear the differences as true stereo. In theory, there should be no difference (except space and bandwidth savings), but the purists will insist that both channels should contain all the data, including that which is duplicated in each channel.
I found if you set your encoder to Custom, you can directly edit the lame.exe command line. This allows you to modify the arguments, like -q 0 to enable the highest quality setting, where the default is -q 3. You can also use the -m switch to change the stereo/joint stereo mode. You also get a gain control slider if you'd like to adjust that. One thing I found is you need to leave the existing arguments there, -r and the -s and -b items. I had to remove -x as it was only outputting static. This has something to do with endian and little endian bytes.
Unless something is wrong with the encoder, joint stereo should either do nothing, or it should free up more bits to be used for encoding the audio. Which means…. joint stereo either makes no difference, or it potentially is audibly BETTER than not using it.
Nothing more I can say about that. 😉
So yeah, you should probably be using joint stereo, unless you want to leave audio quality on the table, sometimes a LOT of audio quality.
Please, need help.
I need a stream MP3 64Kbps 44100 MONO.
What is te correct "custom" for this?i have
ENCODER=lame.exe -r -s %samplerate% -b %bitrate% -x – –
MIME/TYPE=audio/mpeg
BITRATE=64
SAMPPLE RATE = 44.100Thanks.
http://ecmc.rochester.edu/ecmc/docs/lame/switchs.html
Look at the first note under the grid: For WAV and AIFF input files, using "-m m" will always produce a mono .mp3 file from both mono and stereo input.
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