Sennheiser 500371 instruction manual NoiseGard Advance, Additional features

NoiseGard Advance

The NoiseGard Advance active noise compensation system is based on the principle of cancelling out sound using “anti-sound” (phase-inverted sound). Tiny microphones pick up low-frequency ambient noise (up to 1 kHz) near the ear. The NoiseGard Advance electronics use this noise to generate a sound wave which is the exact opposite (IE: at the same level but polarity reversed – 180° out-of- phase), the effect being that the polarity reversed signal cancels most of the outside noise.

Additional features

y Outstanding sound quality due to patented adaptive baffle damping and Duofol diaphragms

yOptimum protection against ambient noise due to NoiseGard Advance active noise compensation

yGreat for travel: comfortable, rugged and foldable headphone construction with single-sided cable

yDesigned for use with in-flight entertainment systems and audio, video and game consoles

yWithout the detachable audio cable, the head- phones can be used as passive hearing protectors

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