Audio CDs do not have to contain any
descriptive info to know the difference between Frank Sinatra and Karen
Carpenter. This can be and is done via CDDB, when connected to Interenet. For
albums, track names are based on song length, track position,
and overall CD playing length.
I believe you are right on with MTC controlling the
CD! I am sending some MTC specs from my Mark III to MidiMagic to do his magic
analysis.
>This is a non-technical reply from someone who
knows zilch about audio CDs
except that they work.
except that they work.
Ah, but with great clarity that us technical ones
easily obfuscate.
Have a healthy New Year!
From: Carol BeigelAudio CDs are digital audio, meaning the operative
word here is digital. Whatever makes an audio CD different from a data CD
is something you guys know something about. It is in that difference that
makes PianoSmart work. The audio CD has data encoded so that it knows which
one it is; i.e. it knows if it is a Frank Sinatra CD from a Karen Carpenter
CD. Whatever this data is, the Yamaha CD player reads it. When the MIDI
information is recorded for the piano to play along with a specific audio
CD, it uses the MIDI Time Code (MTC), whatever that is! This MTC knows
exactly when to interface with the data on the audio CD and it can be done
either inYamaha'a production department, or on your own Disklavier with the
PianoSmart program installed.
In other words, the MTC is in the MIDI info on the floppy and not on the
audio CD. I not sure it would appear in a hex dump because it is a timer
thingy. There is a digital timer on the audio CD and a digital timer in the
MIDI information. All the MIDI has to do is sync with the CD timer.
That's probably why PianoSmart only works on Yamaha CD players.
Hope everyone has a happy and prosperous New Year!
Carol Beigel
----- Original Message -----
From: "fkagel"
To:
Sent: Tuesday, December 30, 2003 9:32 PM
Subject: [disklavier] Dissecting Sysex and/or MTC w/ PianoSmart
> Re: Mark III Series
> Recoding own accompaniment to CD
>
> Is there anyone in the group that has dissected the MIDI data when
> accompanying a CD? The system 'knows' which CD is supposed to be in
> place and will indicate that the wrong one has been inserted if that
> is the case.
>
> I've noted 3 SYSEXs at the beginning:
> F0 05 7E 7F 09 01 F7 - Turns on GM, but what is the 2nd Byte 05 mean?
> F0 08 43 10 4C 00 00 7E 00 F7 - XG on, but what does 2nd Byte 08 mean?
> F0 05 43 71 05 01 F7 - Don't know???
>
> Where is the MTC or what controls the CD sync? What should I be
> looking for in the hex dump?
>
> Between the 2nd and 3rd Sysex, I have a hex dump that someone is
> welcomed to look atd. Game, Midimagic?
>
> Fred Kagel
>
>
>
>
>
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> Todd's family web site was completely updated 012/22/03. It contains some
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>
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To Post a message to the group, send it to: disklavier@...
To Post a private message to Todd Muncy, the group's founder and moderator, send it to:
disklavier-owner@...
To reach our group's web site go to:
http://Yahoogroups.com/group/disklavier
Todd's family web site was completely updated 012/22/03. It contains some fun disklavier content and links to midi sites among many other things, The url is:
http://MuncyFamily.com
THINKING OF LEAVING THE GROUP?
If you are thinking of unsubcribing because you are getting too much mail, go the the web site and change your email delivery option instead. That will fix the problem, while maintaining your access to the group. If you insist on leaving us completely send a blank email to:
disklavier-unsubscribe@...
Know someone who wants to join? Have them send a blank email to:
disklavier-subscribe@... or give them this link:
http://Yahoogroups.com/group/disklavier/join
Yahoo! Groups Links
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