On Sun, 16 Mar 2008 18:11:50 -0500 "Charles Henry" czhenry@gmail.com wrote:
My interest in making an impulse train is to make the impulses, which will have subtle deviations about a central frequency, and process them through a filter (formant).
Would be useful. It's certainly common, saw this recently looking at engines. A petrol engine is timed by the spark, but the sputter you get with a desiel engine seems to come from the ignition being a thermodynamic property of the compression, sometimes its a bit early or late in the cycle, but the chance of being very early or late falls off rapidly around a point.