[LAU] OT - impulse response recording

[Hartmut Noack]

Am 30.01.2011 13:22, schrieb Arnold Krille:
> On Sunday 30 January 2011 11:34:31 Hartmut Noack wrote:
>> Am 28.01.2011 13:23, schrieb fons at kokkinizita.net:
>>> 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

I dont really believe in the built-in speakers. Especially if we talk 
about frequencies below 150Hz ;-)

> 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.

I´d be very interested in such a usage-scenario. I got an old 
Sharp-MD-recorder that came with a quite usable mini-mic...

>
> Have fun,
>
> Arnold
>
>
>
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user