Abstract: System for producing a substantially noise-free signal of an acoustic sound, and for producing a sound, the sound including a desired sound and an anti-phase noise sound, the anti-phase noise sound being in anti-phase relative to a noise, the system including an acoustoelectric transducer, a reference-acoustoelectric transducer and an audio controller coupled with the reference-acoustoelectric transducer and the acoustoelectric transducer, wherein the acoustoelectric transducer produces a noise bearing sound signal by detecting the acoustic sound and the noise, wherein the reference-acoustoelectric transducer produces the reference noise signal by detecting the noise in a noisy environment and wherein the audio controller produces the substantially noise-free signal, according to the reference noise signal and the noise bearing sound signal.

Abstract: System for producing multi-dimensional sound to be heard by an aircraft crew member, the multi-dimensional sound being respective of an input signal received from a source and associated with a respective indicated input signal position, the system comprising an aircraft crew member position system, detecting the aircraft crew member position, a memory unit, storing a plurality of spatial sound models, a processor, coupled with the aircraft crew member position system, the memory unit and with the source, the processor retrieving a selected one of the spatial sound models from the memory unit, according to the indicated input signal position and the aircraft crew member position, the processor applying the selected spatial sound model to an audio signal respective of the input signal, thereby producing a plurality of audio channels, and a plurality of head-mounted sound reproducers, coupled with the processor, each the head-mounted sound reproducers being associated with and producing sound according to a res