Thanks for the comment. You shouldn't have much trouble finding ("out there") the original clip that I used as a guide for this. It had a sequence of multiple chirps that were mostly slightly different from each other, and I figured that would be the best because someone could always just cut out one or three (or whatever) for isolated use. I don't remember now how many synthesis tricks I had to pull to get similar-sounding chirps, but as you might guess, a lot of it was just manually comparing the reference sound's spectrum to what I was coming up with. I had to synthesize a suitably-close chirp-like noise to start with, duplicate it to match the beat of the original, and then do lots and lots of noise shaping, lots of filtering and so on. I do recall that a characteristic part of this (and many other ST:TOS sounds, to a lesser extent) is a rather strong band-pass filtering. But one of the advantages of recreating these from scratch is that you end up with something that is truly clean and pure, as you have noted.
This is really nice. clean and Optimal. I have heard a lot of commutator chirps around, and most seem to be badly recorded clips from the old show, and others are pretty far off. Yours is the best I've heard.
Thanks for the notification and the offer! I put this pack together only recently and it hasn't gotten much usage yet. By contrast, the Wood Destruction pack is probably the oldest stuff I have here, and those sounds have been listed in many productions visible on the WWW. It's actually very surprising to me, to see what people find useful, versus what I *think* people will find useful. :-)
Hey, pigeonamondo, thanks for the notice here... I would never have imagined someone using it like that. If I didn't know what I was listening for, I would never guessed that the complex backdrop included this sound. But I can tell it's there since you told me. :-)