Disklavier

There are quite a few wave to midi programs on the web that are designed
to tackle polyphonic music--such as a piece recorded on the piano. There
some more web address at the bottom of my email. Sadly none of them
works that well (and I have tried at least demo versions of all of
them). For my money, the best of the bunch is Akoff's Composer 2.0. But
I wouldn't buy one without trying a demo version first.

Converting wave to midi is a very difficult computational problem. If
you play middle C on the piano, you not only get the frequency of middle
C, but also several harmonics--a softer C an octave above, a still
softer G above that, C two octaves above and a few more minor
vibrations. Play a simple three-note chord of C and there will be well
over a dozen different frequencies. The main problem for the computer is
sorting out softly played notes from these harmonics. The programs have
different ways to doing this, but basically if you turn up the
sensitivity to capture more right notes you also get a lot of wrong
ones. Turn the sensitivity down and you lose a lot of right notes. There
are also other problems, such as the difficulty all the programs have in
detecting bass notes. If you want to get a feel for some of the problems
the Audiotomidi program is one of the better ones, and it is free.

The Official alt.music.midi FAQ has list of programs and a rather
pessimistic view of the area. A couple of years ago the only wave to
midi programs around were monophonic--they could only tackle single
notes. Personally I think the programmers have made tremendous progress
since then.

Anyway that's enough waffle: here's a few websites. Good luck.
http://www.intelliscore.net/ 
http://www.pluto.dti.ne.jp/%7Earaki/amazingmidi/
http://www.btinternet.com/~irshatwell/WaveGoodbye/software.html
http://andreenk.chat.ru/english/widi.htm
http://www.asahi-net.or.jp/~ri7h-obt/htdocs/soft/e_gama.html
http://www.midi.ru/audiotomidi/ (This is freeware)
And the Official alt.midi.music. faq are at http://home.sc.rr.com/cosmog
ony/ammfaq.html  

Mick Hamer

 Carol Beigel <carolrpt@...> writes
>Someone inquired a while back about converting MIDI generated files from 
>their Disklavier to wave files so they could put them on CD.  I was cruising 
>the www.sharewaremusicmachine.com site (click on Notation) and found 3 
>interesting programs that might interest this list.
>
>TiMidity++ v2.10.2 is a MIDI to WAVE converter and player that uses Gravis 
>Ultrasound-compatible patch files to generate digital audio data from 
>General MIDI files.  This program is freeware.
>
>AmazingMIDI 1.60 transcribes WAV to MIDI. (REad the text file to make sure 
>your .wav are sampled correctly)  Let's you save a 30-second MIDI file using 
>the demo, but the full version only costs $29.
>
>Akoff Music Composer 2.0 - is music recognition software which performs WAV 
>to MIDI conversion on polyphonic music.  Full version costs $29.
>
>None of this software works perfectly without editing, so learning how to 
>edit scores would be most useful.  I understand the full version of Cakewalk 
>ScoreWriter on costs $39 these days, but make sure the soundcard on your 
>computer is at least 32-bit. (16-bit soundcards will crash your computer 
>using ScoreWriter!)
>
>Carol Beigel
>
>
>
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-- 
mick hamer