[PD] earplug~ or FIR~ for HRTF?
Nicholas Mariette
nicholas.mariette at limsi.fr
Thu Sep 4 16:44:59 CEST 2008
IEM's bin_ambi is a sophisticated binaural rendering system via higher
order Ambisonic spatialisation to virtual speaker arrays.
http://iem.at/Members/noisternig/bin_ambi
FIR~ is very CPU intensive for HRTF processing. It's much better to
use frequency domain convolution with fft~ & ifft~ which is the case
with bin_ambi.
I've listed some publicly available HRTF sets on my blog here:
http://blog.soundsorange.net/2005/11/09/hrtf/
Nick
http://soundsorange.net
On Sep 4, 2008, at 4:09 PM, Claude Heiland-Allen wrote:
> Hi all,
>
> I'm considering whether to use the earplug~ HRTF external or some
> alternative implementation of binaural spatialization.
>
> On the plus side, earplug~ seems quite easy to use.
>
> On the down side, earplug~ seems not to handle any sample-rate stuff
> at
> all, so I'm wondering which samplerate the impulse responses in the
> earplug_data.txt are sampled at (because obviously it would be
> somewhat
> weird to use them at another rate...).
>
> I don't really need the interpolation provided by earplug~ either,
> so I
> guess I could save some CPU by using FIR~ directly, but then I need to
> obtain some HRIR's (ideally both at 44100Hz and 48000Hz sample rates).
>
> So: has someone already made a binaural processing patch using FIR~
> and
> some set of impulse responses and would care to share it?
>
>
> Some context for the curious: I'm trying to auralize 4D space using
> 4D
> room simulation, with an "ear" made up of several co-solid listening
> points in the 4D space, each mapped to a 3D source point for binaural
> processing.
>
> Thanks for any tips,
>
>
> Claude
> --
> http://claudiusmaximus.goto10.org
>
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