Patent ID: 8391499

Claim:
A method comprising: generating at a first transducer coupled to a sequencer a first pressure wave propagating in a first direction, said first pressure wave generated in response to a first excitation pulse having a first excitation pulse duration that can be selected to be long enough to provide a maximum amount of power and that can be selected to be short enough to provide less than a maximum amount of power, said first pressure wave adapted to interact with at least a first portion of a plurality of environmental objects and to be transformed into a first response audible to a user; generating at a second transducer coupled to the sequencer a second pressure wave propagating in a second direction, said second pressure wave generated in response to a second excitation pulse having a second excitation pulse duration that can be selected to be long enough to provide a maximum amount of power and that can be selected to be short enough to provide less than a maximum amount of power, said second pressure wave adapted to interact with at least a second portion of the plurality of environmental objects and to be transformed into a second response audible to the user; and causing additional iterations of the first and second pressure waves.