Hi Troy
please subscribe to the users mailing list. I’ll send the following
request to the list right now:
Linux and MTC
Hi
because someone in the forum has got troubles with MIDI sync to external
equipment I tested it. Please keep in mind that I’ve got troubles with
Linux and MIDI sequencers, that’s why my test might be critical.
In the times of the C64 I was an assembler MIDI coder, so the following
information about MIDI is very old and might not fit to the actual MIDI
conventions.
I signed binary with ‘%’.
My notes for the C64:
Song Position Pointer %1111 0010 %0lll llll %0hhh hhhh
lll llll ist the low byte and hhh hhhh the high byte for the songposition
the songposition is noted by the sum of 1/16 notes from the start
position of the song
Information by Wiki:
MTC distinguishes between different fps only by the rate at which
timecode advances.
I tested it by connecting my ATATI ST to my Linux workstation, running
sequencers without sending any note events, I only made a visual test.
The setup was:
64 Studio 2.1 64-bit vanilla install running Rosegarden
ATARI ST Cubase 3.1 with dongle key, so there shouldn’t be any bug.
Cracks might have bugs.
What ever I tried, I wasn’t able to run Rosegarden as slave.
Running the ATARI as slave, everything seems to be fine.
The settings for Rosegarden as master were:
MIDI Clock and System messages: Send MIDI Clock, Start and Stop
MIDI Machine Control mode: Off
MIDI Time Code mode: MTC master
Automatically connect sync output to all devices in use: [x]
The settings for Cubase as slave were:
SYNC SOURCE
SMPTE SYNC: MTC
FROM INPUT: ATARI
FRAME RATE: 30 fps
TEMPO SYNC: MIDICLK
FROM INPUT: ATARI
I wonder if someone is able to run Rosegarden as slave?
Because of my own troubles with Linux, I have to check out other
settings, that’s why I can’t do much research for this, but I think this
is a serious issue.
Some days ago I asked for help with less information, maybe now someone
is interested in this. I guess there’s the need for Linux to have better
MIDI sync, to become a serious workstation for musicians using MIDI.
You can find the tread here: http://www.64studio.com/node/769
Cheers,
Ralf
* By Icemouse at 10/15/2008 - 15:17
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Linux and MTC
