Abstract: A system and method for delivering full-bandwidth sound to an audience in an audience space located in front of an acoustically reflective image screen such as a plasma, LCD, LED, or OLED screen. The sound delivery system provides for two separate and spatially displaced sound sources, namely, a high frequency loudspeaker for reproducing high frequency components of the sound associated with images displayed on the acoustically reflective image screen, and a separate low frequency loudspeaker for reproducing low frequency components of the image-associated sound.

Abstract: An arrayable loudspeaker (11) has at least one high frequency driver (39) mounted to a horn (37) and at least one pair of low frequency drivers (41) configured behind and in a closely spaced relationship to the horn to form low frequency side chambers (71) between the drivers and the horn from which acoustic energy produced by the low frequency drivers can propagate. Low frequency exit channels (77) above and below the horn are coupled to the low frequency side chambers (71). The configuration of the horn and low frequency drivers and the low frequency side chambers and low frequency exit channels is such that acoustical outputs of all drivers radiate coaxially from the loudspeaker with substantially constant wide beamwidth in the non-arraying plane. Signal processing can be added to enhance beamwidth control critical frequency ranges above crossover.

Abstract: An arrayable loudspeaker (11) has at least one high frequency driver (39) mounted to a horn (37) and at least one pair of low frequency drivers (41) configured behind and in a closely spaced relationship to the horn to form low frequency side chambers (71) between the drivers and the horn from which acoustic energy produced by the low frequency drivers can propagate. Low frequency exit channels (77) above and below the horn are coupled to the low frequency side chambers (71). The configuration of the horn and low frequency drivers and the low frequency side chambers and low frequency exit channels is such that acoustical outputs of all drivers radiate coaxially from the loudspeaker with substantially constant wide beamwidth in the non-arraying plane. Signal processing can be added to enhance beamwidth control critical frequency ranges above crossover.

Abstract: A loudspeaker system has a high frequency channel for driving a horn loaded high frequency transducer, and a low frequency channel for driving a low frequency transducer. A signal processing circuit is provided which has at least one first order and at least one second order cross-over circuit portion in the high channel and at least one first order and at least one second order cross-over circuit portion in the low frequency channel. These cross-over portions produce a cross-over frequency range for the loudspeaker system that is below the cut-off frequency of the horn. The signal processing circuit, including its cross-over circuit portions and in conjunction with the design of the expansion walls of the horn, extends vertical beamwidth control of the acoustic output of the loudspeaker system at the loudspeaker system's lower frequency range.

Abstract: A loudspeaker system has a plurality of relatively small transducer elements configured in a closely spaced transducer array such that their acoustic outputs combine to produce a focused beam of sound in front of the array that is substantially uniform about the beams radiation axis. The transducer array lies in a plane and has a perimeter that approximates a circle, and will have fill-factor with respect to a circle circumscribing the array of at least approximately 70%. In one variation of the loudspeaker system, the transducer array is constructed in smaller transducer array modules that are operatively fitted together to produce a larger array.

Abstract: A loudspeaker system has a plurality of relatively small transducer elements configured in a closely spaced transducer array such that their acoustic outputs combine to produce a focused beam of sound in front of the array that is substantially uniform about the beams radiation axis. The transducer array lies in a plane and has a perimeter that approximates a circle, and will have fill-factor with respect to a circle circumscribing the array of at least approximately 70%. In one variation of the loudspeaker system, the transducer array is constructed in smaller transducer array modules that are operatively fitted together to produce a larger array.