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Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Reflecting on Reflections - June 2014
Quiet Thoughts on a Deafening Problem - May 2014
AES Convention Papers Forum
Spherical Sound Source for Acoustic Measurements
A spherical sound source for acoustic measurements is proposed, consisting of a pair of coaxial loudspeakers and a pair of compression drivers radiating into a common radially expanding horn in full 360-degree horizontal plane. This horn‚Äôs vertical radiation pattern is defined by the enclosures of the LF arrangement. The LF membranes radiate spherically the 50 to 500 Hz band, whereas their HF components complete the horizontal horn reference ellipsoid-like diagram in both vertical directions to a spherical one. The assembly has axial symmetry, thus perfect horizontal polar pattern. The vertical pattern is well within ISO 3382 specifications, even without any ‚Äúgliding.‚Äù Comparative measurements against a purposely built typical dodecahedron revealed superior directivity, sound power capability, and distortion performance.
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