Sound reproduction system and method

Claim 1

A sound reproduction system for providing sound to a defined listening area, said system comprising a common audio input for a single channel electrical audio signal, first and second transducer means, each of which generates an acoustical output in response to the single channel electrical audio signal impressed on said audio input, each of which has a sound pressure distribution pattern characterized by a sound pressure lobe directed forwardly of said transducer means on a forward axis defined by the sound pressure maximum, and each of which is adapted to reproduce substantially the full audio frequency range of said sound reproduction system wherein the audio frequency range of said system includes at least a portion of the audio frequency spectrum above low frequencies, said first and second transducer means further being responsive to the single channel electrical audio signal to said audio input and being electrically connected in opposite phase polarities with respect to said common audio input so that the acoustical output of said first transducer means is substantially 180° out of phase from the acoustical output from said second transducer means, and structural means for supporting said first and second transducer means in a closely spaced, side by side, relation whereby the forward axes of the sound pressure lobes of said first and second transducer means have a substantial closely spaced, single channel component in the same direction.

Claim 12

A method of radiating sound to a listening area comprising the steps of directing to said listening area two closely spaced matched transducer means adapted to produce acoustical outputs over at least a portion of the audio frequency spectrum above low frequencies, and driving said match transducers means from a common, single channel, electrical audio signal such that the acoustical outputs thereof are 180° out of phase relative to each other for achieving a null at the listening area.

Claim 13

A method of radiating sound to a listening area comprising the steps of directing to said listening area two closely spaced matched transducer means adapted to produce acoustical outputs over at least a portion of the audio frequency spectrum above low frequencies, and driving said match transducers means from a common, single channel, electrical audio signal such that the acoustical outputs thereof are 180° out of phase relative to each other for achieving a null at the listening area.