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18.05.2006 Angelo Farina
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Conclusions
§Traditional methods for measuring “spatial
parameters” proved to be
unreliable and do not provide complete information
§The 1°-order
Ambisonics method can be used for generating and recording sound with a limited amount of
spatial
information
§For obtaining better spatial resolution,
High-Order Ambisonics can
be used, limiting the spherical-harmonics expansion to a reasonable order (2°, 3° or
4°).
§Experimental hardware and software tools have been developed (mainly in France, but also in USA),
allowing to build
an inexpensive complete measurement system
§From the
complete matrix of measured impulse responses it is easy to derive any suitable subset,
including an highly accurate
binaural rendering over head-tracked headphones.