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- This is the README file for the Lemur 3.0.1 distribution package from the
- University of Illinois CERL Sound Group. (Those of you who have read
- several of these already may skip to the bottom to see what's new.)
-
- Lemur was written by Kelly Fitz and Bill Walker at the University of
- Illinois CERL Sound Group. It is based on MQAN, a tool written by Rob
- Maher and Jim Beauchamp at the Computer Music Project of the
- University of Illinois School of Music.
-
- Lemur is a sinusoidal analysis and synthesis program based on the
- McAulay-Quatieri technique. It analyzes AIFF sample files to produce
- an intermediate representation (a Lemur analysis file), and uses these analysis
- files to synthesize AIFF sample files. Time scaling, frequency scaling, and
- frequency shifting are possible. Lemur will run on any Macintosh with a
- floating point copressor (68881 or 68882) running system 6.0.7 or later.
-
- LemurEdit is a graphical editing/displaying tool for the Lemur analysis files,
- written by Bryan Holloway, also at the CERL Sound Group. LemurEdit displays
- the analysis files generated by Lemur, and can create new analysis files
- from selected components of existing ones. It also makes beautiful pictures,
- suitable for framing.
-
- If you use Lemur and LemurEdit, please, oh please send us email and tell us
- about it. We are always interested in hearing about how Lemur is being used
- and by whom. Bug reports are also appreciated, and any suggestions for new
- features (except ports) will be considered.
-
- lemur-301.hqx is a BinHexed self-exctracting Compactor archive containing
- the Lemur and LemurEdit programs, documentation for each, and some AIFF
- sample files to play with.
-
- Please let us know if you are using these programs. Lemur and LemurEdit are shareware. If you like them, please send $15 US (or some other amount) to
- Kelly Fitz or Bryan Holloway at the address below. We will use it to buy more
- coffee so that we can write more software. Even if you don't feel like sending us
- money, we'd like to know that people are using the programs, so at least send us
- some email or a postcard or a gumwrapper or anything else that you can spare.
-
- Thanx.
-
- Kelly Fitz (k-fitz@uiuc.edu)
- Bryan Holloway (homey@uiuc.edu)
- Bill Walker (walker@cs.uiuc.edu)
-
- 252 ERL
- 103 S. Mathews
- Urbana IL 61801
-
-
- WHAT'S NEW:
-
- The most obvious differences between Lemur 3.0.1 and 2.7 (or 3.0 for those of
- you that got a copy of that unreleased version) are cosmetic. I don't need to
- describe those changes, they should be obvious.
-
- The Lemur analysis file no longer contians explicit phase data for every peak.
- We now keep the same information, but store it as frequency data in the analysis
- files. This makes them easier to read, write, and interpret with programs other
- than Lemur and LemurEdit. It also speeds up synthesis, at the expense of slowing
- down analysis just a bit.
-
- The newest Lemur file format uses no 12 byte floating point numbers. These
- were really unnecessary on the disk, and were difficult to read and write for
- folks using anything other than C or C++. Version 2.7 did away with most of
- them, but there were a few hangers-on in the analysis file header. They have
- now been eliminated.
-
- Lemur also contains some new danger options! These are part of ongoing research
- here at the U of I, and their use is not particularly recommended. These include
- the SOS synthesis option and the noise pre-filtering option. They are described
- briefly in the Lemur manual. Contact us for more information about them.
-
- The last new thing about these programs is that we finally put a shareware fee
- on them. Your support is greatly appreciated, but not required.
-
- That's the bulk of it. Any questions? Don't hesitate to call (email).
-
- -kel
-