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Subject: Re: [motm] modcan 19a wavetable "oscillator"

From: J G Wong <adaaxs@...>
Date: 2001-02-28

Ken Stone Just sent me six boards that hold the table roms and then use
another vco. The trick her is if you have decent collection of VCOs you
can design some nice sounds.

The tracks file is still up at Sasami

g Wong

norman fay wrote:
>
> I seem to remember some mention of this a few weeks ago, and a
> listmember has emailed me privately to ask about it, so here's a little
> bit of info. The module is not an oscillator in itself, but needs to be
> driven by a square/pulse wave. there are 64 digital waveforms available,
> divided up thusly: a switch selects one of two groups, each group
> contains 4 banks, and each bank contains 8 waveforms. The waveforms
> are genrally interesting, synthetic sounding, and work well with filters
> - high resonance picks out interesting harmonics! The banks and waves
> can be selected by pushbutton, or by a trigger input. it does ∗not∗ do
> wave table sweeps like a ppg or wiard waveform city. The 19a divides
> the driving pulse wave by the number of steps in the waveform. I didn't
> check too carefully, I'm embarrased to admit, but I think its /16 IE 4
> octaves down. It will track right down into the LFO range, so you can
> get weird pattern lfo sweeps, or even sequencer effects with a little
> fiddling. There are 2 things I haven't tried yet. One of them is
> driving it from a MOTM VCO - the modcan vco's square and saw outs are
> +ve going only, as opposed to MOTM's bipolar waves, but I don't forsee
> any problems. The other thing is the "sync" socket. this works like
> the sync socket on a regular VCO, but one sweeps the driving oscillator
> to get the effect. I'm guessing that on receiving a "leading edge", the
> module resets the wave to its start. I'll test both these things on
> wednesday, and report.
> Now, there was some mention of a larry h motm format panel for this,
> IIRC, and also IIRC, I believe that someone mentiones that paul s wasn't
> panning a wavetable module? Please correct if I'm wrong. Of course,I
> had to ask modcan's bruce duncan if he'd be willing to supply an ultra-
> basic stripped down vesion of the modcan wavetable oscillator, so
> (larry) could possibly produce panels for it.
>
> his reply....
>
> "Maybe...If enough people were interested I could modify the design to
> suit
> I need to find a supply for the 2732 non cmos eeprom that the wavetable
> uses as my current supply is getting low.
> Tell the guy to contact me and perhaps we can arrange something."
>
> So, I'm wondering what the interest would be, and if larry would be up
> for it? Oh, the power requirements are compatible with MOTM, although
> the connector on the wavetable pcb is a three-pin version of the MOTM
> connector, with only one (centre) ground wire.
>
> I should point out that I wouldn't be up for a stooge panel for my 19a
> module, as I ∗really∗ like modcan's graphics, and I'm building MOTM and
> Modcan systems up in parallel (score so far - motm 10, modcan 6), in
> seperate cases...however.....I know a lot of you are motm-format only
> types...
>
> best etc.
> --
> NoRMaN FaY
> check out my /<-r/-\/> new band!!!
> www.blueappleboy.co.uk
> (no pics of me there yet!)
>
>
>
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