Thanks for the responses! I get it now. Buffering refers to
matching inputs and ouputs electrically. Make sense...
--- In motm@yahoogroups.com, "Roger Rossen" <mididood@a...> wrote:
> Larry writes:
> I think (someone correct me if I am wrong) that buffer is
> generically used as a term to describe a unity gain amp.
>
> This is one way to put - as it took me a long time to
> understand 'buffering', (way back in the dark ages) I offer my 1
> cent: its probably good to also look at it as a way to impedance
> match. "Impedance" just being "resistance" of AC signals - as
> buffering is everywhere in synth design - its just a way to get a
> signal out of one circuit and into another, with minimal signal
loss
> or having the I/O impedance of one circuit, affect the other...
>
> This is why op-amps are so great for audio - very hi input
impedance
> and very low output impedance (in most cases). This is how you
> couple circuits together without signal loss or s/n issues.
>
> This is a quick and dirty explanation. Personally, I feel that
> anyone doing synth design, or even the occasional mod, should
really
> get to know how opamps work, its not hard, and will provide you
with
> a lifetime of knowhow, to design all your own stuff!
>
> Rog
> (can ya tell I got some spare time this morning?)