Disklavier

You did not state whether you are connected to the Disklavier's MIDI 
connectors or to the "To Host" connection.

It sounds as though you are experiencing loopback.  Do you have two MIDI 
cables connected between your Disklavier and computer?  If so, 
temporarily disconnect the MIDI cable from the "Out" connector at the 
Disklavier.  If the chattering stops, loopback was the problem.

Here is how loopback occurs:

A. Your computer sends a MIDI messaage to the Disklavier's "In" connector.

B. The Disklavier returns the same message to the computer.

C. The computer returns the same message to the Disklavier, etc., etc.

Check the documentation for Cubase.  You should be able to set that 
software to NOT send back received MIDI signals.  In Cakewalk, it is 
called "Echo Mode".  If you are using the "To Host" connection, you can 
stop the chattering only by killing the software's echo mode.

I have had the same problem using Cakewalk.  When the program is 
launched, it is set by default with the "Echo Mode" in "Auto".  It needs 
to be set to "None".  It was often catching me off guard and requiring 
me to mouse through menus to turn it off. To preclude that problem, I 
built a simple switchbox that allows me to open or close either of the 
two MIDI lines.  Through forgetfulness, I still occasionally get 
chattering, but, to stop it, I need only reach over for the switch.

As for getting a 20-second note, you have probably tried to use the 
sustain pedal to accomplish that and you may not wish to have all the 
strings undamped.  That maximum note length function is surely buried in 
a control program in ROM.  It is extremely unlikely that Yamaha would 
share the code with you or burn a custom PROM.  In principle, through 
reverse engineering, that probably could be done on your own at great 
expense.


cdman1232001 wrote:
> Hi everyone, here's my problem :
> I am triggering the piano from within a PC with Cubase, i am sending 
> very little information at a time for example if i send only 1 Note 
> On (and velocity) and a sustain pedal down message (c64 127(i've 
> tried lower values like 95 to no avail)), the sustain pedal will 
> randomly start clanking very fast (i'm french for lack of a better 
> word the analogy would be it sounds like someone that hits their 
> teeth very fast), sometimes it does it sometimes it doesnt you can 
> hear the mechanical part sound when it's working right it's like a 
> humm but as soon as the clanking begins you can't hear the sustain 
> pedal mechanics anymore, if i look in the piano i can see the whole 
> section that goes down when a sustain pedal goes down going up and 
> down at a very high rate of speed about 2 times per second, it does 
> it gently but still loud enough so that you can hear it.
> 
> I've tried different midi configurations with same results, i'm 
> thinking this is mechanical and either part of or the motor 
> controlling the pedal is damaged or there's a problem with the 
> disklavier controler.
> 
> Anyone ever get this problem, is there a special midi trick to this 
> or is this purely mechanical ?
> 
> also, is there any way around the 16 second note length lock on the 
> piano ? i'd reall like to be able to get 20 seconds....
> 
> Thx guys
> Franky.
> 
> 
> 
> 
> 
> 
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-- 
Robert Welcyng
Anchorage, Alaska