Loudspeaker array for enlarged sweet spot

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT FIG.
2 is a generalized block diagram of a specific embodiment of an audio reproduction system 10 according to an illustrated embodiment of the invention.
The audio system 10 provides means 20 for coupling one or more audio signals into audio processing circuitry (e.
g.
, computer algorithm) 30.
Processed audio signals are then coupled into loudspeaker frequency selective crossover networks 40, including a separate crossover network 42 for the left loudspeaker and a separate crossover network 46 for the right loudspeaker.
The left crossover 42 may be comprised of a low pass filter 43 to separate and route low frequency signals to left woofer 53, and a high pass filter 45 to separate and route high frequency signals to left tweeter 55.
Similarly, right crossover 46 may be comprised of a low pass filter 47 to separate and route low frequency signals to right woofer 57, and a high pass filter 49 to separate and route high frequency signals to right tweeter 59.
The collection of left loudspeaker 52 and right loudspeaker 56 are referred to as the loudspeaker array 50.
In this embodiment, two-way left and right loudspeaker systems are described, being the simplest embodiment of the invention, but it will be understood that three-way, or generally, multiway, loudspeakers may be accommodated, and the loudspeaker systems may be arrayed in other ways and in other numbers than the usual symmetric left-right pair, according to the invention.
Left loudspeaker 52 is comprised of a left woofer 53 and a left tweeter 55, and the right loudspeaker 56 is comprised of a right woofer 57 and a right tweeter 59.
The acoustically radiating elements, woofers 53 and 57 and tweeters 55 and 59, are arranged into a substantially horizontal array, for a normally-oriented listener's head.
(If a listener's head 60 is not oriented in a normal, upright, position, then the array 50 may be reoriented so as to maintain the same approximate geometrical relationship to the head of the listener, or the imaging circuitry 30 may be adapted accordingly