convolution

[Simon Wood]

Yeah I also heard that the spark method was what audio professionals
used.

Re: popping balloons, someone on the Csound list mentioned that it is
~10dB louder if you use a balloon inflater to blow it up until it pops
as compared to bursting it with a pin.  And a few people did mention
that they got reasonably good results using the balloon method.

I was wondering how well a fire cracker would work myself... might have
to try it out I think.

Oh and here are a couple of sites that contain impulse responses:
http://pcfarina.eng.unipr.it/Public/Convolution/
http://wwwvms.utexas.edu/~fredrics/isrc.html



Cheers,
Simon



> -----Original Message-----
> From:	Don Tillman [SMTP:don at till.com]
> Sent:	Friday, October 29, 1999 12:39 AM
> To:	martin.czech at intermetall.de
> Cc:	synth-diy at mailhost.bpa.nl
> Subject:	Re: convolution
> 
>    From: Martin Czech <martin.czech at intermetall.de>
>    Date: Thu, 28 Oct 1999 14:24:36 +0200 (MET DST)
> 
>    But how can I obtain a impulse response if I don't have anything
> that
>    makes such a impulse. I could clap in my hands (not very
> reproduceable)
>    or use two pieces of wood etc...
> 
> How about a gun? :-)  
> 
> Somewhere back in my memory I seem to think that when acoustic
> professionals do this they use an electric spark.  Practically I guess
> that would mean the largest capacitor in your collection, or burning
> up a small piece of wire with the AC line or a 12-volt car battery.
> (Hey, this is why you got into electronics in the first place!)
> 
>   -- Don