Patent ID: 8483405

Claim:
An audio system for use with multiple listening positions, said audio system comprising: at least one source of audio signals; at least one respective array of speaker elements located at each of a plurality of the listening positions that receives the audio signals and responsively radiates bass frequency acoustic energy; wherein, for each first at least one array at a first listening position of the plurality of listening positions, a first pair of speaker elements receive a common said audio signal, a filter is disposed between the common audio signal and at least one of the speaker elements of the first array, wherein said filter processes the common audio signal and outputs a processed audio signal to the at least one speaker element, independently of application of the common signal to another of the pair of said elements of the first array, and the filter implements a set of coefficients for the filter to process audio signals to the at least one speaker element, and is optimized based on bass frequency acoustic energy radiated from the first array and detected at at least one listening position other than the first listening position, so that a ratio of magnitude of the bass frequency acoustic energy radiated by the first array to the plurality of listening positions other than the first listening position and magnitude of the bass frequency acoustic energy radiated by the first array to the first listening position results in greater acoustic isolation between the first listening position and the plurality of other listening positions than the acoustic isolation that would result if the signals applied to each of the first pair of speaker elements were equal in magnitude and opposite in polarity.