Predicting the Future

[Dr S Grainger]

>
>It's a fundamental problem: A square wave does only carry the 
>information of the discrete time of its zero crossing. So there is
>no way to predict the next zero crossing when the frequency changes.
>Therefore every correction of the SAW ramp time comes too late.
>
>
>JH.
>
>
>
	This is a good point from JH. It is noticable on the Juno
	106 that if you introduce a sudden rise in pitch (say from
	the pitchbend lever) that there is a momentary rise in the
	sawtooth amplitude.

	This is corrected on the next cycle that the S/Hs are updated
	with new integrator input voltages.

	Perhaps this is the reason the 106 has no modulation waveforms
	with 'instantaneous edges' ?

	Steve Grainger


Dr. Steve Grainger
MiB Centre Manager
School of Engineering and Advanced Technology
Staffordshire University
Beaconside 
Stafford 
Staffs
ST18 0AD
Tel: +44 (0) 1785 353322	Mobile: 0973 832122
Fax: +44 (0) 1785 353551