New at TechnoFirst: the French specialist of the ANR (Active Noise Reduction) has offered the month of April 2010, a wider range of hearing protectors for sale online directly on the corporate website of the company. Technology (ANR Active Noise Reduction) was invented and patented by the company CEO, Dr. Christian Carme, a researcher at CNRS, 20 years ago. TechnoFirst has developed several product lines using active noise reduction, a complex process that few companies in the world totally mastered. This is indeed sending a speaker in a wave of phase with the noise to cancel or greatly attenuate. To put theory into practice, the company uses complex algorithms to model and predict sounds. TechnoFirst has serious references. The company worked with the Navy to soundproofing submarines of the nuclear deterrent. The noise-canceling headsets TechnoFirst are used by pilots of helicopters and tanks of the French army. To date, more than 500,000 people worldwide would use the hearing protection system invented and patented in 1996 by TechnoFirst. This specialist also designs silent silent for active ventilation ducts and exhaust systems of trucks and planes propeller, bubbles of silence for business jets, and has even developed a lift muffler shop for a famous Champs Elysées ... Projects in collaboration with international groups no shortage of noise barriers to Vinci, the active noise control booths for Caterpillar construction vehicle cabs and locomotives Electro-Motive Diesel Inc. (EMD ) ...
How does the helmet TechnoFirst?
ANR technology uses a miniaturized electronic circuit board placed in the helmet shell. This device listens to the sound with a small microphone and a loudspeaker sends sound out of phase, which will create a zone of silence near the ear. Designed for noisy environments, headsets range Noisemater produce an attenuation which is between 30 and 45 dBA according to ambient noise. The attenuation at low frequencies from 15 dB in passive mode (without the electronic device) to 40 dB in active mode, and operates in an environment up to 120 dB. Low frequencies are most hazardous to the auditory sphere . Over time, exposure to noise can cause hearing loss and / or noise ghosts called tinnitus which already suffer from 10 to 15% of French. This type of helmet will be very useful to persons exposed to noise or construction machinery: stationery, factories, construction machine, gardening and tinkering with noisy equipment etc. ... Prices range from 349 euros to 489 euros HT HT. The headphones are available with normal arch or hoop used with a helmet. In options, it is possible to buy batteries deported (79 euros) and a Walkie-Talkie Icom IC-4008E NoiseMaster for communicating (306 euros). To carry all in complete safety, a carrying case is sold 140 euros HT. The online store to buy noise-canceling headphones TechnoFirst. TechnoFirst The company is publicly traded on the open market (Euronext Paris - France) under code MLFST - FR0010006429.
How does the helmet TechnoFirst?
ANR technology uses a miniaturized electronic circuit board placed in the helmet shell. This device listens to the sound with a small microphone and a loudspeaker sends sound out of phase, which will create a zone of silence near the ear. Designed for noisy environments, headsets range Noisemater produce an attenuation which is between 30 and 45 dBA according to ambient noise. The attenuation at low frequencies from 15 dB in passive mode (without the electronic device) to 40 dB in active mode, and operates in an environment up to 120 dB. Low frequencies are most hazardous to the auditory sphere . Over time, exposure to noise can cause hearing loss and / or noise ghosts called tinnitus which already suffer from 10 to 15% of French. This type of helmet will be very useful to persons exposed to noise or construction machinery: stationery, factories, construction machine, gardening and tinkering with noisy equipment etc. ... Prices range from 349 euros to 489 euros HT HT. The headphones are available with normal arch or hoop used with a helmet. In options, it is possible to buy batteries deported (79 euros) and a Walkie-Talkie Icom IC-4008E NoiseMaster for communicating (306 euros). To carry all in complete safety, a carrying case is sold 140 euros HT. The online store to buy noise-canceling headphones TechnoFirst. TechnoFirst The company is publicly traded on the open market (Euronext Paris - France) under code MLFST - FR0010006429.
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