Disklavier

You're certainly welcome, Mike.

A couple of clarifications . . .

I was not advocating listening to the DKV at the the highest tolerable 
volume setting, but rather pointing out that the errors of reproduction 
do vary with note velocity.  Any interesting performance will encompass 
a range of note velocities; each note across that range will be 
reproduced with varying accuracy depending somewhat upon its individual 
velocity.  There is little you can do about that unless you happen to be 
the author of the file.  If you, as originator of the file, are having 
trouble reproducing trills and soft notes, for example, try increasing 
those note velocities.

The choice of the Volume setting is a whole other story, depending upon 
whether you're seeking the most accurate reproduction of the original or 
  just comfortable listening.  For critical auditioning of a performance 
recorded on a Mark II, set the Volume to "0" (and realize that there are 
still some inaccuracies in the reproduction).  For casual listening, set 
the Volume to a comfortable level; by doing so, you may sacrifice the 
original sound power and the dynamic range, but you will be able to 
enjoy the music.

For the record, I didn't state that "the Disklavier solenoids are 
serially activated".  Sixteen solenoids might well be driven in 
parallel.  I am reasonably certain that the keyboard and hammers are 
serially scanned, however.

It would be interesting to make measurements on both a Mark III and Pro 
and compare their accuracy of reproduction with the Mark II.

-- Bob Welcyng





mcgregor2play wrote:

> Dear Robert and Winfried,
> 
> 
> Thank you so much for your thoughtful answers to my questions about 
> MIDI limitations.  Who would have thought that answers would have 
> originated from both the "frozen north" and from the tropics.  Lest 
> I give offense, I hasten to add that I have not visited either spot, 
> and also that I have heard glowing reports about life in both places.
> 
> I am quite satisfied with the performance of my Disklavier, but I 
> also am aware that (at least the non-pro models) do not capture all 
> of the nuances of the original performances, and wanted to know more 
> about the limitations. I will try listening at a louder volume and 
> see if I detect a difference. (Generally, louder playback gives one 
> a different, and usually more favorable, impression of audio 
> recordings, so I suppose I will have to guard against that.)
> 
> I would like to mention one piano roll piece that contains a great 
> number of chords that have many notes - the Duo-Art emulation of "An 
> American In Paris."  The chords seem to be struck exactly at the 
> same time.
> 
> Again, thanks for satisfying my curiosity.  One of the most 
> significant new facts that I learned is that the Disklavier 
> solenoids are serially activated. So making the inputs parallel 
> would not fix everything.  
> 
> The Mark III solenoids are supposedly more powerful than those of 
> the Mark II.  I wonder if that would make a difference.  (Mine is a 
> Mark II.)
> 
> Mike McGregor
> 
> 
> 
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-- 
Robert Welcyng
Anchorage, Alaska