The Yamaha AN1x Synthesizer mailing list

No man we're all learning from you...thanks !  Don't stop.
Met Vriendelijke Groet / With Kind Regards,

Bastiaan van de Werk
----- Original Message -----
From: Bruce Wahler <bruce@...>
To: <AN1x-list@yahoogroups.com>
Sent: Saturday, March 10, 2001 4:10 PM
Subject: Re: SV: SV: [AN1x-list] FM synthesis (long post)


> Jim,
>
> >I still need to wrap my head around the syncing of vc01 and vc02, why one
> >would chose one over the other for master-slave..
>
> In principle, it doesn't matter which wave is the slave for syncing, but
in
> practice, once a VCO is selected, the waveforms of the two VCOs can be
> pruned to include only the most musically useful ones.  It may simplify
the
> design, which usually translates into a cost savings.
>
> >One thing especially...when some of the algorithms have an option called
> >"fixed" does that effectively turn the option off...out of the picture?
>
> Fixed doesn't turn syncing off; it just fixes the frequency of the slave
> oscillator.  If we look at how syncing works, the master oscillator
'says,'
> "Look, the slave oscillator can do anything it likes, frequency-wise, but
> every time I reach the start of my waveform (0 degrees), I'm going to
force
> the slave back to 0 degrees, too."  This is a kind of modulation, and like
> other modulation types, results in a wave that has frequency components of
> both the carrier and modulator.  IMHO, fixed-frequency syncing is less
> musically interesting than variable-frequency syncing, just like a sine
> wave is less musically interesting than a sawtooth -- but that's a
> generalization.  Both sines and fixed syncing have their use, musically.
>
> >I assume you've been here longer, and know about the list...but for the
> >short time I've been here I have seen mail form other novices and I can't
> >believe they would want to miss out on this kind of good explanation of
> >theory, about one of the central modules.
>
> Actually, I've only been on the list for about 2 1/2 weeks.  My advantages
> are:  a) I'm an electrical engineer whose specialty is analog electronics;
> and b) I was fortunate enough to go to a college in the mid-70s where I
had
> access to a Minimoog, a Putney VCS3, and a Buchla.  The access to
> non-programmed, analog synths means that I had to learn how to do things
> from scratch, rather than depend on a library of sounds created by the
> manufacturer.  A pain in the butt then; a clear advantage now.  When I
> first got the AN1x, I spent a week of, "Wow!  You mean you can sync the
> VCOs to LFO1, and still have VCO2 left over???" and such.
>
> >I certainly can take it off line...but isn't the purpose of this list to
> >discuss exactly this kind of thing? Have most of the people here already
> >been through this?
>
> A good question for the group:  Was my explanation to Jim useful to
others,
> or was it a case of, "Oh no!  Not another round of synth theory!"  I'm a
> relative newbie here, so a poll might be in order.
>
> >(by the way..any idea of the number of listers?)
>
> ~400
>
>
> Regards,
>
> -BW
>
> --
> Bruce Wahler
> Design Consultant
> Ashby Solutions"
> www.ashbysolutions.com
> CloneWheel Support Group moderator
> 978.386.7389  voice
> 978.776.0096  fax
> bruce@...
>
>
>
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