Disklavier

For Mark II DKVs capable of continuous sustain pedal, please be aware of 
this:

1) Continuous sustain pedal data directed to MIDI channel #1 will be 
interpreted as on/off.  That is, for data values 0 thru 63, the dampers 
will be completely lowered upon the strings; for data values 64 thru 
127, the dampers will be fully raised off the strings.

2) To obtain continuous sustain pedal movement, the sustain pedal 
continuous data must be directed to MIDI channel #3.  If you are sending 
the data from, say, a laptop to the MIDI In port, you must also set the 
DKV's MIDI IN to "CH=HP" in order for the DKV to respond with continuous 
sustain pedal motion.

In contrast, Mark III DKVs do appear to record and respond to continuous 
pedal data directed to MIDI channel #1.

Danny wrote:
> From: Walter Sharpe
> 
> Thank you Fred, Spencer and Piano Bench,
>      I will respond to your various comments (copied below) all at once rather
> than separately to make it easier for you all to follow. Maybe some others out
> there will benefit from some of the information here.
>      Since my response is rather lengthy, I have included it in an attached zip
> file along with some midi files that demonstrate some of my points. They sound
> very nice too so maybe those who are not that interested in the discussion will
> at least enjoy the music!
> -Walt
> 
> ***********
> 
> W: Also contained in the zip file is a file called "PEDAL THUMP TEST.mid". It
> contains nothing but pedal events so you can listen to the pedal action and any
> rumble of vibration pedal thump sets off in the strings. I created it with
> Cakewalk Home Studio. When you insert a pedal event in Staff view, Cakewalk
> writes in a 127 and a 0. (In other words, a down and an up.) On Track one, by
> going into the "Event List" view and changing the numbers, I was able to
> demonstate that my two year old MX500 Disklavier II interprets Controller 64
> values between 85 and 127 the same: pedal down with a thump. It treats values
> between 80 and 0 the same also: pedal up with another thump. It's going to be
> interesting to put this file on a floppy disk and try it on a few different
> Disklaviers on the show room floor.
> 
> D: Hi Walter
> 
> D: I've been following this thread with interest as I also have been
> experimenting with the 'Pedal Thump' problem for some time. I am using a Mark II
> XG Disklavier. When I change my controller 64 information so that I have a
> 'linear' type of pedaling, my sustain pedal follows in a somewhat linear
> fashion, and not responding in a hard 'on/off' fashion. Have you tried
> 'modulating' the controller 64 data, i.e., a series of 'timed' 'on/offs'
> gradually moving them apart in time? (A bit like PWM, pulse-width-modulation, in
> Engineering terms. I can get a bit more detailed if you need this info.) A
> mechanical motion takes time to respond from a stimulus. This *may* 'damp' the
> physical motion enough to produce a softer 'on/off' pedaling. (Of course, we
> don't know what Yamaha is doing internally when reading this MIDI data; i.e.,
> how it responds to varying controller data in real time.) It sure would be nice
> if we could figure out how different Disklavier models respond to the same
> pedaling data. We could put this info in a .PDF file similar to what Carol added
> in our 'files' section a while back showing differences between Disklavier
> models.
> 
> D: A also tried your "PEDAL THUMP TEST.mid" file on my Mark II XG. As shown in
> the first three measures of this file, you have an alternating 80 and 85, then
> you go to the alternating 0 and 127. My pedal goes down a small bit and stays
> there until measure 4.
> 
> D: I am attaching basically the same file with some controller 64 mods. When
> playing this MIDI file on my Disklavier, the thump quietens the most with a
> release value of 50. I can't hear much of a difference with the release values
> of 20 or 30. I was trying the 'on' values of 127 and 100, just for
> experimenting. The only time I hear the hard thump on my piano, is the releasing
> of the sustain pedal. How about yours?
> 
> D: Danny
> 
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-- 
Robert Welcyng
Anchorage, Alaska