Hi, I am not a piano technician (wish I were...) but I don't think the coupling of the two keyboards ( sensors on one commanding solenoids on the other) would work and be unnoticed. I have a disklavier and real-time midi (or whatever) is quite impossible without a noticeable delay, because the software has to compensate for the delay due to differences in midi velocity. That is : the timing and speed (ie volume or midi velocity) of the "reproduced" note depends on how fast the key is moved. If for example you would play simultaneously a FF note and a PP one, the timing recorded would be the same, but on the reproducing piano, the software has to compensate it by pressing the PP note a little sooner so that both "bottoms of the keys" - and thus hammer strike - will be reached simultaneously. A disklavier (or solenoid piano as such) doesn't react like a synthesizer or sampler keyboard : those can go lightning fast, and synchronize easily because they deal with electronics only. The only limit is the accumulation of midi delays and that's 2ms each. But on a disklavier you have a real action, very slowly reacting compared to a mere " estimate time and velocity" sensor. The yamaha sensors, for example, will detect the speed of the individual hammer a few millimeters from the strike point. Then the software has to compute the exact timing of the "pressing the key", depending on the hammer's speed (this delay being smaller with fff notes...) Am I right or could there be a way to do what I was unable to do with my disklavier and master keyboard - that is having a musician hidden somewhere playing the master keyboard connected to the disklavier, and so having the disklavier onstage, "magically" accompanying a spectator singing whatever he or she would like, and reacting "live" with the public ?... Jean Debefve Le 2 janv. 2011 à 19:28, Ron Nossaman a écrit : > On 1/2/2011 10:05 AM, James Grebe wrote: >> So what is with the organ pipes inside?. They do not appear to be winded. > > No, they're eyewash like the rest of the thing. The New Zealand kid actually built his piano. It looks like this guy stuck two existing pianos together and did some furniture work. As usual with this kind of thing, there's no real information such as whether the stringed thing at the back is actually functional in any way, or just there to add length. With sensors under the keys in front, and solenoids in the rear, it could be made to play in tandem. But no one bothered to find out and report it. > > Oh, and it'll play in in a few years, and sound better. > Ron N
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