On Thu, 20 Jan 2005 03:28 pm, tone wrote:
> On 20/01/2005, at 12:08 PM, Matthew Palmer wrote:
> > On Thu, Jan 20, 2005 at 10:40:57AM +1100, tone wrote:
> >> I've had a search around and there doesn't seem to be anything
> >> available. If noone knows of any, can anyone point me in the right
> >> direction? I figure there must be some APIs out there that are
> >> suitable, and in terms of audio processing, it's a fairly simple task
> >> to perform (i *think* ;)
> > Don't let my nay-saying dissuade you from giving it a go, though --
> > it'd be
> > a fun project, involving all the best sorts of hacking around, but I
> > can't
> > see it being a particularly practical solution -- better off just
> > building a
> > little noise-proof cubby.
>
> someone has just pointed me to a good article on this exact problem,
> although after skimming it seems that it'll be a bit too intense for
> what little benefit it will provide in light of this and other advice
> about the problems of the positive and negative interference etc etc...
>
> (for those interested and for the benefit of the list archives the URL
> is: http://www.analog.com/library/analogDialogue/archives/34-02/noise/)
>
> I was, rather optimistically I'll admit, hoping that an API could
> reduce the problem to a few lines of code something like
>
> phase_shift(180, input);
>
> o well.. it was just a thought.. thanks anyway though :)
>
> --
> tone
You could do exactly that with a handful of components from Disk Smith or
Jaycar for <$10 (Do some googling on "op-amp" circuits :P). However, like
your line of code, it would suffer all the timing and phase problems Matthew
described earlier. Still it's a great piece of curiosity :)
Have fun!
James
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-- Martin Luther King, Jr.
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