[sdiy] Substitute for pin matrixes? Probability list update 2.

[karl dalen]

sön 2010-01-24 skrev Neil Johnson <neil.johnson97 at ntlworld.com>:

> Sorry if these have been answered already, but here are
> some questions for you:

Thees are most valid questions!
They are also not the most easiest question to
answer since its a balance of all parameters.

> What is *YOUR* definition of "dead cheap'...?

Dead cheap are 3 fold:

1:to give people a hint not to start to start recommend obvious
expensive solutions like the Gillemetti matrix.
2: To force people to think outside the box.
3: Just that, Dead cheap as possible, why pay extra for nothing?... :)
 
> What is your budget?  -- either in terms of overall
> cost, or per interconnect.

Low, as low as it can be balanced to the performance of the
solution and liftime, in other words its not statically defined.

> What size matrix are you looking for?
it depends where its a matrix or divided into sub matrixed.

Estimate 640 interconnections are well enough but if less
are cheaper why not? Its a balance between connects and necessity,
with matrixes redundancy, duplication and usless connects 
becomes a part of the solution.

> What is the maximum permissible crosstalk level (in dB)?

Obviously low, but reasonable at 10 khz, it depends on what
type of signal one are using and to where it goes. According
to the old testament of JH, the divine god of Gillemetti matrixes,
matrix'es do not have particularly god crosstalk figures.
 
> What environment will this matrix be used in?

A Lfo sens a triangle square to a Cv of a VCO.
A vco sends a saw to a VCF etc, etc, the usual basic stuff really.
 
> How many times do you estimate making/changing
> interconnections?

Only the supreme being knows that! :)
Counter question, whats your favorite patch?

KD


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