home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Ian & Stuart's Australian Mac 1993 September
/
September 93.iso
/
Archives
/
Sound
/
Analysis & Editing
/
Lemur™ 3.0.1 Distribution
/
lemur-301-README
next >
Wrap
Text File
|
1993-09-03
|
4KB
|
78 lines
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