Hello,
did anyone do a comparison between HarpexB, O3A Harpex Upsampler and
SPARTA COMPASS to see which produce a better and more precise output? Or
is it just a matter of personal taste and any engineer can choose
preferred one?
Personally I think upsampling is a great option, mainly for storage and
archiving, and since most of the Ambisonics recordings are made with a
FOA mic.
Thanks.
Emanuele
On 22/02/2019 18:15, Politis Archontis wrote:
Hi David,
These upmixing methods extract a lot of information from the FOA recording that is then
re-used to essentially “synthesize" the HOA signals, with a spatial resolution that
would not be possible with the FOA recordings. They are “active” in that sense, and
signal-dependent, compared to the “passive" classical ambisonic decoding. Their
success depends of course on how effective is their underlying model and how robustly
they are implemented.
In that sense there isn’t necessarily a large benefit in parametric upmixing
from FOA to 3rd-order, compared to parametric decoding for playback, since
these methods can also upmix directly from FOA to, say, 40 speakers or
headphones, with their maximum sharpness. However, the HOA upmixing could be
useful for people that are working with a HOA processing pipeline, and they
want to integrate FOA or lower-order material seamlessly.
Regards,
Archontis Politis
On 22 Feb 2019, at 19:45, David Pickett <d...@fugato.com> wrote:
At 02:37 22-02-19, Wilson Lim wrote:
ot sure if I have missed a discussion about upmixing with ambisonics on
Sursound.
Just wondering if anyone is willing to share some information on how to
implement upmixing algorithms from 1st Order Ambisonics A&B-format to 3rd
Order Ambisonics B-format.
I am curious to know what advantage there is to playing back 1st order upmixed
to 3rd order. Doesnt it still sound like 1st order, since there no information
is actually added? Or are the images expectated to be more stable on account of
more loudspeakers being involved, on the analogy of stereo played back through
three loudpeakers?
David
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