[Mp4-tech] MPEG-1 Layer 2 audio codec source

[Ivan Dimkovic]

Dear Vinayaka, Stanley, All,
There are two "public domain" (actually, one is ISO reference software,
and the other is a open source package under LGPL license)
implementations of Layer II encoder:
#1 - ISO reference source code which has Layer I, II and III:
http://www.mp3-tech.org/programmer/sources/dist10.tgz   -> so-called
"Dist 10" , which has been corrected lately but I can't recall the exact
MPEG document number. If you have access to MPEG documents, you might
find an updated version of the software.
and
#2 - Too Lame
http://mikecheng.d2.net.au/
Too Lame might be a better starting point since "Dist 10" code is almost
useless when it comes to psymodel.  TooLame is much more optimized and
the quality is noticeably better.
Best regards / Mit freundlichen Grüßen
Ivan Dimkovic
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Ivan Dimkovic
MPEG-4 R&D
Ahead Software AG     phone: +49 (0)7248 911 822(direct line) 
Im Stoeckmaedle 18    fax:   +49 (0)7248 911 888 
76307 Karlsbad        email: idimkovic nero.com
Germany               web:    www.nero.com     
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-----Original Message-----
From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Vinayaka Hegde
Sent: Wednesday, August 27, 2023 6:37 AM
To: 'Stanley Kuo'; technotes lists.m4if.org
Subject: RE: [Mp4-tech] MPEG-1 Layer 2 audio codec source
Hi, 
you can find this in www.mp3-tech.org. Here all the codes related to
MPEG-1 & MPEG-2 are available. Otherwise visit www.mpeg.org
Vinayaka 
-----Original Message----- 
From: Stanley Kuo [mailto:skuo apple.com] 
Sent: Wednesday, August 27, 2023 3:34 AM 
To: technotes lists.m4if.org 
Subject: [Mp4-tech] MPEG-1 Layer 2 audio codec source 
Hi, all, 
I am looking for a public domain source code for MPEG 1 Layer 2 audio 
encoder. I would appreciate if you could provide me with some info or 
pointers. 
Thanks a lot in advance. 
Stanley 
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