The clicks are because you are trying to run about 100Hz sampled DC as a control voltage to a VCA. You cannot do this. A S&H is used *mainly* for controlling a VCO. Try this patch: S&H Out >> 1V/Oct in on a VCO (or on a VCF) This will randomly move the VCO/VCF's center frequency to a different point with each samle pulse. The 'classic' S&H patch is to feed a saw or triangle into the S&H and use the output into a VCO. This will make arpeggiated "runs" and you can vary the 'tune' it plays by ever-so-slightly changing the input frequency. Low frequency input waves (<20Hz) are best for this. If you want to use the S&H output into a VCA control input, you will have to place a slew limiter on the S&H output first (a VC limiter is in design now). Otherwise, the vca "pops" which is what you are hearing. Paul S. -----Original Message----- From: mark scetta <n0nspaz@...> To: motm@onelist.com <motm@onelist.com> Date: Wednesday, October 06, 1999 3:38 PM Subject: [motm] Re: motm-100 q's >From: mark scetta <n0nspaz@...> > >paul, i am still hearing a click that varies in amplitude on most or all of >the samples. MOTM-100 is set to HOLD, speed & level are at 10. > >my audio signal path is: > >jp6 arpegg. in --> +15v preamp (set at 3:00) -->Y-split--> motm-100 IN & >motm-110 VCA IN --> VCA out to mixer > >my CV path is: > >motm 100 OUT --> motm 110 CV with CV mod pot at 10 and GAIN pot in the >BIAS region > >the clicks aren't loud, sort of like footsteps running along with the signal. > >i have verified that the switch is wired correctly. > >any further help is appreciated. >mark > > > > >>Message: 2 >> Date: Sat, 25 Sep 1999 15:17:42 -0500 >> From: "Paul Schreiber" <synth1@...> >>Subject: Re: motm-100 q's >> >>1) What is it that you are sampling? Also, be sure the switch is in HOLD, >>not TRACK >>(be sure the switch is wired correctly. >> >>The output of a S&H is *always* a CV, not audio. The input can be audio, but >>*not* the output. >> >>2) No, it is fixed at 7Hz. >> >>Paul S. >> >>-----Original Message----- >>From: mark scetta <n0nspaz@...> >>To: motm@onelist.com <motm@onelist.com> >>Date: Saturday, September 25, 1999 2:20 PM >>Subject: [motm] motm-100 q's >> >> >> >From: mark scetta <n0nspaz@...> >> > >> > >> >is is normal that the s&h, when sampling an external kb like my jp6, >> >produces highly audible clicks on every sample? >> > >> > >> >is it possible to vary the frequency of the vibrato? it seems to be fixed, >> >and the external clock doesn't seem to CV it. >> > >> >regards from providence >> >mark >> > >> >> >> >> >> >>__________________________________________________________________________ _ >>____ >>__________________________________________________________________________ _ >>____ > >>
Message
Re: Re: motm-100 q's
1999-10-06 by Paul Schreiber
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