linuxaudio.org

Am 28.01.2011 13:23, schrieb fons@kokkinizita.net:

quoted text
> On Fri, Jan 28, 2011 at 01:40:00AM -0500, Michal Seta wrote:

>

>> A friend of mine would like to record some impulse response of various

>> spaces.  I don't know the details nor the ultimate goal of this undertaking

>> but the problem was about the bst equipment for such recordings.  I know a

>> loud signal is needed (she has a starter gun for that purpose) but unclear

>> about what kind of microphones should be used.  Any tips?  Ideas?

>> experiences?

>

> Starter guns, electric sparks, exploding balloons or preservatives,

> etc. are not the best way to do this. You get a much more accurate

> result and a much better S/N ratio using a sine sweep and deconvolution

> instead.

This is true if you want perfectly exact, high fidelity, realistic

response-files of real rooms.
But if you just want files, that produce interesting sounding

reverb-effects, enything that fits, fits.
I use to record rooms using my mobile-phones puny videofunction, the

built-in micro and finger snapping ;-)

Not hi-fi at all and I would distribute these files claiming they would

be something like tools to reproduce the original rooms. But I like,

what I hear, if I load them into a convolver....
> Aliki (available on my website) can do this. See

quoted text
>   for an introduction.

> The actual application does not have all the features explained in

> the paper but it will do the basic IR measurement.

>

> As for the microphones, this depends on the intended use of the

> IR. For acoustic analysis you'd use a measurement mic, for reverb

> whatever mic type provides the format you require.

>

> Ciao,

>

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