On 7 January 2013 02:08, Chenrilin wrote:
>>Do you get the same problem if you playback through four loudspeakers, or
>
>>is it only after HRTF manipulation ?
>
>>* Does the decoding work on speakers (without HRTF) ?
>
> The mics are omnis. And it can work on speakers well. So I think
> X and Y
Hi,
Have you looked at any of Angelo Farina's recent work, which
essentially involves beamforming from an Eigenmike but without going
through the intervening step of spherical harmonics, which has some
advantages if you are looking at separating sound sources. A lot of
Angelo's work in the last f
t; Department of Music
> The University of York
> Heslington
> York YO10 5DD
> UK
>
> 'Ambisonics - Component Imaging for Audio'
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Chenrilin wrote:
> Hello, all
> I have designed an array of four microphones to get B-format signal.
...
> Then I decoded
> them to get the
> feeding signal for four loudspeakers, and used HRTFs to get the left and
> right signal for headphone.
>
> 1. Furthermore, the experiment is made that
mponents.
>
> Regards,
> Martin
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> Martin J Leese
> E-mail: martin.leese stanfordalumni.org
> Web: http://members.tripod.com/martin_leese/
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On Mon, Jan 07, 2013 at 03:12:26PM -0800, Aaron Heller wrote:
> Without more details, it hard to speculate about problems, but I'll note
> that subtracting the outputs of two omnis to get a fig-8 response will
> result in a frequency response that rises 6dB/octave with a 90 degree phase
> shift re
>The mics are omnis
It might be stating the obvious here but how would you get ANY directional
information out of four OMNI mics close together? :-)
Surely to get a fig-8 response you need two CARDIODS back to back (one of
which is polarity reversed obviously).
Mike Felton
On 7 January 2013 23
>Hi,
> Seems likely then that the problem is related to the usual "in
>head" problem that many (maybe even most) people people have with
>simple, non matched HRTF based systems, whether driven from decoded
>Ambisonic signals or from binaurally recorded (dummy head) material.
>There's been a
