HEMISPHERES

Brand	Owner	Address	Description
TWO HEMISPHERES	ZWEIFEL INTERNATIONAL	8967 Easterling Drive Orlando FL 32819	2 HEMISPHERES;advertising, namely advertising of parades, museums and events of general public interest by furnishing the original Barnum Two Hemispheres Circus Wagon for use or display at such events and by distributing promotional literature containing pictures or reproductions of the Two Hemispheres Circus Wagon for advertising of the events;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method of improving 3D sound reproduction is described, in which virtual sound sources to be positioned behind a listener 10 are filtered using an HF-cut filter in order to remove distracting high-frequency components caused by incomplete transaural crosstalk cancellation. Sound sources placed in the rearward hemisphere of reference sphere 30 are filtered by an amount dependent on the position of the sound source in order to provide a smooth transition between the filtered and unfiltered hemispheres. HF-cut filtering is at a maximum when the sound source is placed directly behind the listener, and is progressively reduced as the forward hemisphere is approached. The invention offers an advantage in that virtual sound images may be placed more effectively behind the listener, given improved realism of 3D effects.