ACTIVE NOISE CANCELLATION (ANC) Headphones

ACTIVE NOISE CANCELLATION (ANC) Headphones for Defense/Military Application

In high Integrity electronic products which  caters  the need of  military and civil aerospace application unwanted environmental noise can cause distraction and can amount to loss of human resources as well as  major economic losses .  The unwanted sound can be reduced by using passive noise cancellation also known as noise isolation  or by using  active noise cancellation (ANR) /Active noise reduction (ANC) headphones.

Passive noise isolation fundamentally tries to block the offending sound wave by creating physical obstruction between the ears and the sound. In-ear canal and closed back headphones are few examples of headphones which are successful in reducing ambient noises by 8 to 12 dB.

Active noise-cancelling headphones uses two fundamental blocks that is the block which captures the sound and a speaker to amplify and play the sound in phase reversed form so that the the unwanted noise cancels out. ANR is the most effective defense against low-frequency noise like noises generated by engines, blowers, motors, fans, vacuums, pumps, generators and other similar devices are typically dominated by low frequencies —frequencies that cannot be stopped by passive earmuffs.

Argus Systems Designed and developed revolutionary ANR headphones caters to this niche aerospace domain and can also be utilized for any noisy industrial area.

Features:

• Revolutionary Active Noise Reduction (ANR) headphone system reduces annoying low frequency sound in noisy environment.

• The chip measure external ambient noise using ANC circuitry with its built-in microphone and synthesizer with a sound in the opposite phase to reduce significant background noise

• Typically reduces 15-20 dB for a tonal noise at 200 Hz frequency.

• Ear cup pivot points that tilt for optimum comfort and efficiency.

• Stainless steel headband distributes weight for low-pressure fit.

• Lightweight adjustable headband provides superior fit Full-size ear cups.

• Low power consumption

 

Specifications
Noise Reduction Bandwidth 20Hz to 600Hz.
Decibel Reduction 15-20dB active noise attenuation at 100 to 400Hz (tonal noise).
Compatibility 300 ohm impedance audio system
Weight Adds approximately 3ounces to original headset weight.
Power input: 9Volt DC power supply, +/- 5%
Power consumption 500 mA (max.)
Temperature/Humidity
Operation
-20°C to +70°C

Argus offers complete electronic product design servicesdesign analysis servicesPCB fabrication services ,PCB assembly services and testing services.

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