Re: morphing sounds was LOOPING a DRY CLEANING SHOP

[Rainer Straschill <moinsound@googlemail.com>]

Am 03.10.2011 19:57, schrieb andy butler:
> "every linear system can be seen as a combination of delays, adders 
> and amplifiers"
> is only true if time invariance does hold.
As usual, you nitpicked right; I stand corrected and rephrase.

"Every linar system can be seen as a combination of delays, adders and 
amplifiers, and in case of time-variant systems, control signal sources 
which can affect the parameters of the delays and amplifiers." (the 
adders being seen as trivial).

(I once had this discussion with a teacher at university - Prof. 
Terhard, some of you might be familiar with him, e.g. for the concept of 
virtual pitch - where I claimed that every time-variant system can be 
seen as a time-invariant system with additional input ports for the 
control signals. However, this in generality turns a linear system into 
a nonlinear one, and the whole discussion moot. Luckily, I discovered 
that before him ;).

           Rainer

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