MOTM

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

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
>
>>

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
> >
> >>
>
>
>
>___________________________________________________________________________ 
>____
>___________________________________________________________________________ 
>____

I don't understand your signal path. "jp6 arpegg in" is an output? Is it
putting out audio or CV signals?

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...

>
> 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
>

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
>> >
>> >>
>>
>>
>>
>>__________________________________________________________________________
_
>>____
>>__________________________________________________________________________
_

>>____
>
>>