ComputerVoltageSources

Tell me more about the timing requiremetns.  In looking at 
metronomes, "highly accurate" is described as +/- 1%.  The PSIM is 
better than that.  In a 5 minute musical piece, 1% accuracy would be 
3 seconds.  0.1% would be 300 mS.  I don't know the exact accuracy 
of the PSIM since I don't know the resonator used but it is probably 
well less than the 1%.

Is this something that MIDI timing clocks could be used for?  If 
MIDI could be used as a master clock, it would be easy to build a 
reference timebase.  My first MIDI code implemented an interrupt 
routine for input.  I later adopted to the HSERIN command which 
buffers the data.  Going back to my original code, I could use real 
time nature of the interrupt to implement a real time clock.  I have 
no relevant experience with MIDI clock and synchronization. It would 
be simple to add and implement, though.  Multiple PSIMs would be 
synchronized to the same MIDI reference.  In fact, an AVR2313 with a 
crystal and two resistors could be used to generate such a 
reference.  Might be a nifty accessory.

Dave

--- In ComputerVoltageSources@yahoogroups.com, "Gary Chang" > The 
length of Psim Madness is not long in terms of music duration -
> any typical piece of music is much longer than that.  Honestly, a 
high
> school music student has a better sense of time than the PSIM.  
> 
> INHO, ability to slave the PSIM is essential.
> 
> If these devices can't play 16 bars together with something else, 
it's
> pretty much useless as a sequential pitch source....  except for a
> phasing minimalist piece (such as PSIM madness).
> 
> 
> gary