history.html

LAME uses the MPGLIB decoding engine, from the MPG123 package, written by: Michael Hipp (www.mpg123

  <li> Mark Taylor:&nbsp; scalefactor band 22 info (masking(=ATH),&nbsp;
noise and energy) now displayed in frame analyzer.</li>
  
  <li> <font color="#ff0000">VBR code ATH tuning was disabled by accident
in 3.81, now fixed.</font></li>
  
  <li> <font color="#000000">Mark Taylor:&nbsp; lame --decode will produce
.wav files.&nbsp; (oops - size is off by a factor of 4)</font></li>
 
</ul>
  
<h3> LAME 3.82beta&nbsp;&nbsp; May 11 2000</h3>
  
<ul>
 
  <li> Robert Hegemann:&nbsp; Fixed bug in high bitrate joint stereo encodings.</li>
  
  <li> <font color="#3366ff">Naoki Shibata:&nbsp; new long block MDCT routine</font></li>
 
</ul>
  
<h3> LAME 3.81beta&nbsp; May 8 2000</h3>
  
<ul>
 
  <li> all ISO code removed!</li>
  
  <li> <font color="#3366ff">Takehiro Tominaga and Naoki Shibata:&nbsp; new
window subband routines.</font></li>
  
  <li> <font color="#000000">Naoki Shibata:&nbsp; Bug fix in mpglib (decoding) 
lib:&nbsp; in some cases, MDCT coefficients from previous granule was incorrectly 
used for the next granule.</font></li>
  
  <li> <font color="#ff0000">ISO 7680 bit buffer limitation removed.&nbsp;
It can be reactivated with "--strictly-enforce-ISO"&nbsp; Please report any 
trouble with high bitrates.</font></li>
 
</ul>
  
<h3> LAME 3.80beta&nbsp; May 6 2000</h3>
  
<ul>
 
  <li> <font color="#ff0000">Takehiro Tominaga:&nbsp; more efficient and
faster huffman encoding!</font></li>
  
  <li> <font color="#ff0000">Takehiro Tominaga and Mark Taylor:&nbsp; much
improved short block compression!</font></li>
  
  <li> <font color="#000000">Tomasz Motylewski and Mark Taylor:&nbsp; MPEG2.5 
now supported!</font></li>
  
  <li> <font color="#000000">Mark Taylor: incorporated Takehiro's bitstream.c!&nbsp; 
bitstream.c used by default, but old ISO bitstream code can also be used.</font></li>
  
  <li> <font color="#ff0000">Scott&nbsp; Manley and Mark Taylor:&nbsp; good
resampling routine finaly in LAME.&nbsp; uses a 19 point FIR filter with
Blackman window.&nbsp; Very slow for non integer resampling ratios.</font></li>
  
  <li> <font color="#000000">Iwasa Kazmi:&nbsp; fixed SIGBUS error:&nbsp;
VBR and id3 tags were using data after it was free()'d.</font></li>
  
  <li> <font color="#ff0000">Robert Hegemann:&nbsp; Improved VBR tuning.&nbsp; 
#define RH_QUALITY_CONTROL and #RH_SIDE_VBR now the defaults.</font></li>
  
  <li> <font color="#000000">Robert Hegemann:&nbsp;&nbsp; LAME version string 
now added to ancillary data.</font></li>
  
  <li> Kimmo Mustonen:&nbsp; VBR histogram support for Amiga.</li>
  
  <li> Casper Gripenberg:&nbsp; VBR stats (but not histogram) for DOS verson.</li>
  
  <li> Robert Hegemann:&nbsp; rare VBR overflow bug fixed.</li>
  
  <li> Zack:&nbsp; -F option strictly enforces the VBR min bitrate.&nbsp;
Without -F, LAME will ignore the minimum bitrate when encoding analog silence.</li>
  
  <li> Shawn Riley:&nbsp; User can now specify a compression ratio (--comp
&lt;arg&gt;) instead of a bit rate.&nbsp; Default settings based on a compression
ratio of 11.0</li>
  
  <li> Mark Taylor:&nbsp; free format bitstreams can be created with --freeformat, 
and specify any integer bitrate from 8 to 320kbs with -b.</li>
  
  <li> Mark Taylor: lame be used as a decoder (output raw pcm only):&nbsp;
lame --decode input.mp3 output.pcm</li>
 
</ul>
  
<h3> LAME 3.70&nbsp;&nbsp; April 6 2000</h3>
  
<ul>
 
  <li> "LAME 3.69beta becomes LAME 3.70 "stable"</li>
 
</ul>
  
<h3> LAME 3.69beta&nbsp;&nbsp; April 6 2000</h3>
  
<ul>
 
  <li> "spahm":&nbsp; default mode selection bug fixed.&nbsp; In some cases,
lame was defaulting to regular stereo instead of jstereo when the user did
not specify a mode.</li>
 
</ul>
  
<h3> LAME 3.68beta&nbsp; April 4 2000</h3>
  
<ul>
 
  <li> Mark Taylor: mono encoding bug in DLL fixed.</li>
  
  <li> Ingo Saitz: bug in --cwlimit argument parsing fixed.</li>
  
  <li> <font color="#ff0000">Scott Manly: bug in 4-point resample code fixed.</font></li>
 
</ul>
  
<h3> LAME 3.67beta&nbsp; March 27 2000</h3>
  
<ul>
 
  <li> <font color="#ff0000">Robert Hegemann:&nbsp; jstereo now enabled for
MPEG2 encodings</font></li>
  
  <li> Mark Taylor: old M/S stereo mode which used L/R maskings has been
removed.</li>
  
  <li> Mark Taylor: Xing MPEG2 VBR headers now working.</li>
  
  <li> <font color="#ff0000">Mark Taylor:&nbsp; When quantized coefficients
are all 0 in a band, set scalefactors to 0 also to save a few bits.</font></li>
  
  <li> <font color="#000000">Ingo Saitz:&nbsp; Problems with framesize calculation 
when using -f fast-math option fixed.</font></li>
 
</ul>
  
<h3> LAME 3.66beta March 21 2000</h3>
  
<ul>
 
  <li> Bug fixes in BladeEnc DLL, possible click in last mp3 frame, VBR historgram 
display, byteswapping option, ASM quantize routines work for both float and
double.</li>
 
</ul>
  
<h3> LAME 3.65beta&nbsp;&nbsp; March 17 2000</h3>
  
<ul>
 
  <li> Enabled ASM version of quantize_xrpow() - accidently disabled in lame3.64.</li>
 
</ul>
  
<h3> LAME 3.64beta&nbsp; March 16 2000</h3>
  
<ul>
 
  <li> Don Melton:&nbsp; id3v1.1 tags &amp; id3 bugfixes</li>
  
  <li> <font color="#ff0000">Gabriel Bouvigne:&nbsp; L/R matching block type
fix</font></li>
  
  <li> <font color="#ff0000">Bug fixed which was allowing quantized values
to exceed the maximum when not using -h</font></li>
  
  <li> <font color="#3366ff">Mark Taylor: Fitlers based on polyphase filterbank.&nbsp; 
should be slightly better since the responce is independent of the blocktype, 
and they are slightly faster.</font></li>
  
  <li> Mark Taylor: API:&nbsp; the API changed slightly - and this should
be the final version. There is a new routine: lame_encode_buffer() which
takes an arbritray sized input buffer, resamples &amp; filters if necessary, 
encodes, and returns the mp3buffer.&nbsp; There are also several new #defines, 
so it is possible to compile a simple encoding library with no decoding or
file I/O or command line parsing.&nbsp; see the file API for details.</li>
  
  <li> Mark Taylor: MSVC stuff:&nbsp; lame.exe (with and without the frame
analyzer) and the CDex lame_enc.dll</li>
  <br>
should compile under MSVC.&nbsp; The MSVC5 project files may need some tweaking.&nbsp;
In particular, <br>
you need to make sure LAMEPARSE, LAMESNDFILE and HAVEMPGLIB <br>
are defined.&nbsp; (and HAVEGTK for the GTK stuff).
</ul>
  
<h3> LAME 3.63beta&nbsp; February 20&nbsp; 2000</h3>
  
<ul>
 
  <li> Robert Hegemann:&nbsp; FPE with -h fixed?</li>
  
  <li> Mathey Hendry:&nbsp; FPE error catching for Cygwin, FPE fix for vbr
mode and output to /dev/null</li>
  
  <li> Jeremy Hall:&nbsp; Fixed problems with input files where the number
of samples is not known.</li>
  
  <li> <font color="#3366ff">Mathew Hendry:&nbsp; ASM quantize_xrpow() for
GNU i386</font></li>
  
  <li> <font color="#3366ff">Wilfried Behne&nbsp; quantize_xrpow ()for PowerPC 
and non-ASM</font></li>
  
  <li> <font color="#3366ff">Takehiro Tominaga:&nbsp; GOGO FFTs&nbsp; (not
yet used?)</font></li>
  <br>
&nbsp;
</ul>
  
<h3> LAME 3.62beta&nbsp;&nbsp; February 9 2000</h3>
  
<ul>
 
  <li> <font color="#000000">Iwasa Kazmi:&nbsp; frame analyzer short block
display of single subblocks (press 1,2&nbsp; or 3)</font></li>
  
  <li> <font color="#000000">Ingo Saitz:&nbsp; --help option added, with
output to stdout</font></li>
  
  <li> <font color="#ff0000">Alfred Weyers: short block AAC spreading function 
bug fixed</font></li>
  
  <li> <font color="#3366ff">Takehiro Tominaga:&nbsp; new scalefac data structure 
- improves performance!</font></li>
  
  <li> <font color="#ff0000">Lionel Bonnet:&nbsp; Bug fixed in MPEG2 scalefactor 
routine: scalefactors were being severly limited.</font></li>
  
  <li> <font color="#3366ff">Takehiro Tominaga:&nbsp; faster FFT routines
from.&nbsp; These routines are also compatible with the GOGO routines, in
case someone is interested in porting them back to LAME.</font></li>
  
  <li> <font color="#3366ff">Sigbj&oslash;rn Skj&aelig;ret, Takehiro Tominaga:&nbsp; 
faster pow() code.</font></li>
  
  <li> <font color="#ff0000">Joachim Kuebart:&nbsp; Found some unitialized
variables that were effecting quality for encodings which did not use the
-h option (now fixed).</font></li>
  
  <li> Mark Taylor: More modularization work.&nbsp;&nbsp; It is now possible
to use LAME as a library where you can set the encoding parameters directly 
and do your own file i/o.&nbsp;&nbsp; The calling program is now it's own 
mp3 output.&nbsp; For an example of the LAME API, see main.c, or mp3rtp.c 
or mp3x.c.&nbsp; These can all be compiled as stand alone programs which link
with libmp3lame.a.</li>
  
  <li> Felix vos Leitner:&nbsp; mp3rtp fixes.&nbsp; mp3rtp is a standalone
program which will encode and stream with RTP.</li>
  
  <li> Robert Hegemann:&nbsp; Information written to stderr displaying exactly 
which type of lowpass filter (if any) is being used.</li>
  
  <li> Iwasa Kazmi:&nbsp; mpglib (the mpg123 decoder) scsfi decoding fixes.</li>
  
  <li> Takehiro Tominaga:&nbsp; More mpglib scsfi decoding fixes.</li>
 
</ul>
  
<h3> LAME 3.61beta&nbsp; January 14 2000</h3>
  
<ul>
 
  <li> <font color="#ff0000">Mark Taylor: Fixed bug with lowpass filters
when using VBR with a 64kbs or lower min bitrate setting.</font></li>
  
  <li> <font color="#ff0000">Takehiro Tominaga:&nbsp; more efficient huffman
encoding splitting.</font></li>
 
</ul>
  
<h3> LAME 3.60beta&nbsp;&nbsp; January 9 2000</h3>
  
<ul>
 
  <li> Mark Taylor: Distribution now comes with self test.&nbsp; Needs work
to be automated, see 'make test' in Makefile.</li>
  
  <li> <font color="#ff0000">Mark Taylor: AAC spreading function now the
default</font></li>
  
  <li> Gabriel Bouvigne: updated HTML docs</li>
  
  <li> Felix von Leitner: compute correct file length from Xing header (if
present) when input file is a mp3 file</li>
  
  <li> Felix von Leitner: mp3rtp (standalone) program now included.&nbsp;
Not yet tested.&nbsp; mp3rtp ip:port:ttl&nbsp; &lt;infile&gt;&nbsp;&nbsp;
/dev/null will stream directly to ip:port using&nbsp; RTP.</li>
  <br>
&nbsp;
</ul>
  
<h3> LAME 3.59beta&nbsp; January 4 2000</h3>
  
<ul>
 
  <li> Takehiro Tominaga:&nbsp; --noath option.&nbsp; Disables ATH maskings.</li>
  
  <li> Gabriel Bouvigne:&nbsp; updated HTML docs.</li>
  
  <li> Iwasa Kazmi:&nbsp; makefile fixes</li>
  
  <li> Mark Taylor:&nbsp; Fixed bug where first frame of data was always
overwritten with 0's.&nbsp; Thanks to 'gol'</li>
  
  <li> <font color="#ff0000">Mark Taylor:&nbsp; bug fixes in mid/side masking 
ratios (thanks to Menno Bakker)</font></li>
  
  <li> Mark Taylor:&nbsp; replaced norm_l, norm_s table data with formulas.</li>
 
</ul>
  
<h3> LAME 3.58beta&nbsp; December 13 1999</h3>
  
<ul>
 
  <li> <font color="#ff0000">Segher Boessenkool:&nbsp; More accurate quantization 
procedure!&nbsp; Enabled with -h.</font></li>
  
  <li> <font color="#3366ff">Mathew Hendry, Acy Stapp and Takehiro Tominaga:
ASM optimizations for quantize_xrpow and quantize_xrpow_ISO.</font></li>
  
  <li> Chuck Zenkus:&nbsp; "encoder inside" logo on web page</li>
  
  <li> Mark Taylor:&nbsp;&nbsp; a couple people have asked for this.&nbsp;&nbsp; 
Allow LAME to overide VBR_min_bitrate if analog_silence detected.&nbsp;&nbsp; 
Analog_silence defined a la Robert:&nbsp;&nbsp; energy&nbsp; &lt; ATH.</li>
  
  <li> An Van Lam: Valid bitrates were being printed for layer 2, not layer
3!</li>
  
  <li> Ethan Yeo:&nbsp; Makefile.MSVC updated</li>
  
  <li> Mark Stephens:&nbsp; updated all MSVC project files</li>
  
  <li> Robert Hegemann:&nbsp; lowpass and highpass filters can be enabled
with --lowpass, --highpass</li>
  
  <li> <font color="#ff0000">Mark Taylor:&nbsp; MS switching is now smoother: 
ms_ratio average over 4 granules</font></li>
  
  <li> <font color="#ff0000">Takehiro Tominaga:&nbsp; Scalefactor pre-emphasis 
fixed (and now turned back on)</font></li>
  
  <li> <font color="#ff0000">Takehiro Tominaga:&nbsp; Bug in M/S maskings:&nbsp; 
switch to turn on stereo demasking code was buggy.</font></li>
 
</ul>