Disklavier

Carl,

There are 2 issues:

--the ability of a particular Disklavier to record and playback.

--the data used to store the recorded performance

The Mark IV has improved sensors and, especially, improved playback  
solenoids. That means that it can do a better job of playing back the  
data that has been given to it.

So, a Mark IV can play loud passages louder and software passages  
softer than previous non-Pro Disklaviers. However, it does not  
generate the extra bits of data that the Pro does during recording  
and it does not respond to the extra bits of Pro data (called XP data).

The record and playback of the standard Mark IV is extraordinary.  
Most people would not notice the difference between it and a Pro.  
However, it is true that the Pro offers greater resolution during the  
recording and better playback.

Regards,
PianoBench

On Nov 13, 2006, at 1:44 PM, Carl Youngblood wrote:

>
> I think John Q. Walker said earlier when he went to look at some  
> early Mark IVs that they had a much more sensitive method of  
> measuring velocity and playing it back, especially on soft  
> passages.  I think he also said that they used 16-bit values for  
> velocity.  I am surprised to hear that this is not the case.  John,  
> is my memory mistaken?
>
> Thanks,
> Carl
>
> On Nov 13, 2006, at 11:24 AM, George F. Litterst wrote:
>
>> Good afternoon, everyone.
>>
>> Carl, the standard Mark IV measures velocity on the normal MIDI scale
>> of 0-127. All Disklavier Pros (from the Mark IIXG version to the Mark
>> III and Mark IV), however, measure velocity on a scale of 0-1023. The
>> extra bits of resolution are stored in various MIDI controllers
>> (controllers which are otherwise undefined in the current MIDI spec).
>> All of the extra MIDI data is transmittable over MIDI cables.
>>
>> Regards,
>> PianoBench
>>
>> TimeWarp Technologies
>> "changing the tempo in music software"
>> www.timewarptech.com
>
>