This product started from a simple observation : too much ambient noises pollute our daily activities when you are at home... Street noises, wheather, vacuum cleaner, appliances... Inspired by the shape of an overthrown speaker, symbol of silence, as a "mute mode". The circular shape allows to better capture and disseminate sound waves. How does it work ? DSP (Digital Signal Processor) technology is used in noise cancellation headphones. The inverse frequency of the ambient noise is emitted. Noise is cancelled. First : the ambient noise is received by the microphone, then, information is transmitted to DSP processor and finally the speakers emit the reverse frequency (the inverted signal). Noise is reduced. This product can be used within 1 to 2 meters around you in order to create your own silence bubble. It could be useful when you want to rest or when you are working in a noisy area to get concentration. It works with a battery that you can load via USB on any device.