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  2. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    Industrial noise control is a subset of interior architectural control of noise, with emphasis on specific methods of sound isolation from industrial machinery and for protection of workers at their task stations. Sound masking is the active addition of noise to reduce the annoyance of certain sounds, the opposite of soundproofing.

  3. Noise temperature - Wikipedia

    en.wikipedia.org/wiki/Noise_temperature

    For instance, assume an amplifier has a noise temperature 870 K and thus a noise figure of 6 dB. If that amplifier is used to amplify a source having a noise temperature of about room temperature (290 K), as many sources do, then the insertion of that amplifier would reduce the SNR of a signal by 6 dB.

  4. Soundproofing - Wikipedia

    en.wikipedia.org/wiki/Soundproofing

    A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...

  5. Soundproofing Against Outdoor Noise - AOL

    www.aol.com/news/2010-08-02-how-to-beat-outdoor...

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  6. Sound transmission class - Wikipedia

    en.wikipedia.org/wiki/Sound_transmission_class

    Outside the US, the ISO Sound Reduction Index (SRI) is used. The STC rating very roughly reflects the decibel reduction of noise that a partition can provide. The STC is useful for evaluating annoyance due to speech sounds, but not music or machinery noise as these sources contain more low frequency energy than speech. [1]

  7. Your Room Temperature Could Be Impacting Your Sleep ... - AOL

    www.aol.com/room-temperature-could-impacting...

    Experts say the best room temperature for sleep is approximately 65 to 67 degrees Fahrenheit. Here’s how sleeping in a cool room impacts your circadian rhythm.

  8. Noise pollution - Wikipedia

    en.wikipedia.org/wiki/Noise_pollution

    The CityLink sound tube in Flemington, Melbourne, Australia, is designed to reduce roadway noise without detracting from the area's aesthetics. A man inserting an earplug in his ear to reduce the noise exposure. The Hierarchy of Controls concept is often used to reduce noise in the environment or the workplace. Engineering noise controls can be ...

  9. Vibration isolation - Wikipedia

    en.wikipedia.org/wiki/Vibration_isolation

    Vacuum: Some isolators can be used in a vacuum environment. Air isolators may have leakage problems. Vacuum requirements typically include some level of clean room requirement and may also have a large temperature range. Magnetism: Some experimentation which requires vibration isolation also requires a low-magnetism environment.

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