A High Performance Approach to Local Active Noise Reduction in Noisy Cabins

Spacecraft cabin is noisy and uncomfortable. Sometimes, the noise level can exceed 80 dBA. There are 2 challenges to meet the above needs. One is to generate an anti-phase (180 deg out of phase) signal in real-time to reduce the loud cabin noise in a small area. Another one is to minimize the spillover of the anti-phase signal to other places. We propose a novel and high performance approach to suppressing background noise in noisy cabins. Our system utilizes a patent pending adaptive algorithm that can generate anti-phase signals in real-time to suppress background noise. Our system is portable and easy to set up. Most importantly, our system can suppress background noise in a small area and will not spill the anti-noise signal to other places.

Our proposed technology can be extremely useful for spacecraft and, ISS where noise levels can exceed 80 dBA. A quiet environment will allow astronaut to rest well. Our approach creates a quiet environment while still allows astronauts to communicate among themselves.

Our proposed active noise reduction systems can be used for pilots and maintainers working in aircraft carriers, naval ships, tanks, and aircraft. The military market size will be 5 million dollars based on a 10,000 units with a unit price of 500 dollars.

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