On Sunday 30 January 2011 11:34:31 Hartmut Noack wrote: > Am 28.01.2011 13:23, schrieb fons@xxxxxxxxxxxxxxx: > > 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.... Using a mobile phone to play the sinus-sweep and record it with a small mp3- player should give you the ability to "measure" different source and target positions in the acoustic space :-) Gotta try that some day. Have fun, Arnold
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