[sdiy] jitter analysis

harrybissell harrybissell at prodigy.net
Wed Jul 7 07:01:58 CEST 2004


Hi Fredrik

some questions...

1) How can you tell you are not seeing FM by power supply components ???

2) Can you tell if there are artifacts from refresh of S/H or A/D
converter

(I'm mostly thinking of ProOne here...)

H^) harry

Fredrik Carlqvist wrote:

> Hello all!
>
> I am proud to announce that some of the oscillator jitter measurements
> are complete! You can find it on
>
> http://www.minod.com/jitter/jitter.html
>
> Complete with pictures of distributions! The following VCOs has been
> measured:
>
> ARP Odyssey
>
> Control Synthesis Deep Bass 9
>
> Homebrew DCO
>
> Orgon Enigiser
>
> René Schmitz 4069VCO
>
> Roland SH-1000
>
> Sequential Pro-One
>
> Yamaha DX7
>
> I will add Moog Source and Roland SH-101 later but then I am out of
> physical synthesizers to measure on. Hopefully, some music store or
> someone living in my part of Sweden (Uppsala) have more machines for
> me.
>
> Thanks to Peter H for letting me use your machines and to Martin Czeck
> for valuable advice on the trigger circuit!
>
> Fredrik C
>



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