[Gllug] [OT] Sound processing.

[James Courtier-Dutton]

On Dec 29, 2011 7:22 PM, <dave.lambley at gmail.com> wrote:
>
> A finite impulse response (
> FIR) filter is what you want to apply to the audio. To implement one you
store the last n samples, multiply each by a particular coefficient and sum
the result to produce the output sample.
>
> So far so straight forward. The hard part is calculating the
coefficients, though recipes for common filters can probably be found in
the right textbook. Generating them from a 3D model is beyond what I know,
but one thing you can do is measure a real life object (such as a
cathedral) and simulate the acoustic behaviour of that digitally.
>

Ok. I understand FIR, i have used those recently for something else.
I need to find out how to get from 3d model to FIR coefficients, and the
reverse. I.e. For a given source and destination waveform, can i determine
the shape of the tunnel?
The possible shape of the tunnel will be constrained.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.lug.org.uk/pipermail/gllug/attachments/20111230/2c52df4f/attachment.html>
-------------- next part --------------
--
Gllug mailing list  -  Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug