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
>> >
>> >>
>>
>>
>>
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