Head diffraction simulation

[Enigma[_2_]]

Hi to all!
For a school project, I must implement a filter that simulates a head
diffraction.
Precisely, my sound is a voice, and I must simulate the diffraction
due to the head. The sound is emitted by the head.
I'm searching a simple filter.
Anybody can help me, with links, papers, or other?
Thanks!

[[email protected]]

On Jul 29, 11:53 am, Enigma > wrote:
> Hi to all!
> For a school project, I must implement a filter that simulates a head
> diffraction.
> Precisely, my sound is a voice, and I must simulate the diffraction
> due to the head. The sound is emitted by the head.
> I'm searching a simple filter.
> Anybody can help me, with links, papers, or other?

Search for "HRTF" or "head-related transfer function".

[Enigma[_2_]]

On 29 Lug, 18:02, wrote:

> Search for "HRTF" or "head-related transfer function".

Thanks for the help, but I'm not sure that this is what I'm searching.
My source is a head, in front of my, and from this source come a sound
(a voice).
I would implement a filter that simulates the voice diffraction due to
the head (source) position (for example if I rotate the head).
So I'm searching for a diffraction filter where the obstacle is the
head (if is back-face me).
Thanks!

[[email protected]]

On Jul 29, 1:05 pm, Enigma > wrote:
> On 29 Lug, 18:02, wrote:
>
> > Search for "HRTF" or "head-related transfer function".
>
> Thanks for the help, but I'm not sure that this is what I'm searching.
> My source is a head, in front of my, and from this source come a sound
> (a voice).
> I would implement a filter that simulates the voice diffraction due to
> the head (source) position (for example if I rotate the head).
> So I'm searching for a diffraction filter where the obstacle is the
> head (if is back-face me).
> Thanks!

Then try the following, which I got froma search of the
phrase "speech directivity". It'll get you started.

http://pcfarina.eng.unipr.it/Public/Papers/203-AES118.pdf
http://www.acoustics.hut.fi/asf/bnam04/webprosari/papers/o11.pdf
http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel4/5518/14820/00674415.pdf?temp=x
http://www.teachernet.gov.uk/_doc/6422/BB93%20STI%20Web%20document%20v1.0.pdf
http://www.acoustics.hut.fi/publications/files/theses/halkosaari_mst/halkosaari_mst.pdf

None of them have a filter spec, per se, but all have data from
which one could curve-fite a filter.

Check especially the references and citations in each: there
is a rich collection from which to draw.

Good luck.