Information about Active Noise Control Products

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About Active Noise Control Products

Active noise control products use electro-acoustical sound field modification or cancellation to attenuate or eliminate unwanted sound. By contrast, passive noise control products use materials to absorb sound. Active noise control products include controllers, sensors, actuators, and other electro-acoustical products for limiting or canceling noise or vibration. In a typical active noise control system, sensors are used to detect unwanted sound when it occurs. A controller and speaker are then used to create a sound field that is a twin of the unwanted sound, but inverted, so that it is a mirror image of the sound to be eliminated an anti-sound.

Products & Services Related to Active Noise Control Products

Acoustic Enclosures

Acoustic enclosures are full chambers, enclosures, or rooms designed to attenuate or minimize acoustical noise.

Industrial Silencers and Mufflers

Industrial silencers and mufflers absorb and attenuate noise levels from machinery and other sources for environmental amelioration and regulatory compliance.

Noise Control Products

Noise control products passively control vibrations or noise through absorption or dampening (e.g., mufflers, silencers or baffles).

Sound Level Meters and Noise Dosimeters

Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement.

Soundproofing and Acoustic Materials

Sound proofing and acoustic materials are used to attenuate, deaden, or control sound and noise levels from machinery and other sources for environmental amelioration and regulatory compliance.

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Articles By Author \| Machine Design Active filtering reduces supply output ripple and noise in the QPO-2 System-in-a-Package (SiP) by over 30 dB from 1 to 500 kHz.
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