On 13/11/2014 03:52, Adam Somers wrote:
Still, I've yet to find a solution for b-to-binaural which is as convincing
as some of the BRIR-based object-sound spatialization packages (e.g. DTS
HeadphoneX and Visisonics Realspace). I think what's primarily lacking is
externalization, which perhaps can be 'faked' with BRIRs.
I'm thinking of
a 'virtual listening room' where the b-format recording is played through
BRIRs instead of anechoic HRTFs. Anyone have experience with that?
I can work fine, it did for me.
I did it this way:
https://www.dropbox.com/s/ta5s993akghhtjq/Ambisonic-AudioMulch.png?dl=0
It worked better for natural B-format recordings than anechoic or
rendered source.
The IRs were made by feeding the HOLMimpulse sweeps into an Ambisonic
decoder and HT receiver as W,X and Y, and recording wth a dummy head.
They were in a square about 1 metre from speaker to ear. The speakers
needed to be placed to better than 1cm. or the image suffered.
I am afraid all the files have been deleted when there was no interest.
I only have a direct recording of ambisonic playback of mainly John
Leonard's http://www.ambisonia.com/ aircraft recordings, from a direct
recording (not convolved) including extraneous noises, like the HT
relays clicking, and people moving about..
https://www.dropbox.com/s/feum9ks7pay5ohq/Ambisonic%20binauiral%20aircraft.flac?dl=0
The Z input was not used, left unwired, or dummy IRs used in these
cases. I later found an improvement from using Z, even without an
appropriate playback system. KCS75 recommended for playback,
particularly if you want to compare with speakers without removing the
earpieces.
http://www.amazon.com/Koss-KSC75-Portable-Stereophone-Headphones/dp/B0006B486K
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