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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

    is the noise temperature (K, kelvin) Thus the noise temperature is proportional to the power spectral density of the noise, /. That is the power that would be absorbed from the component or source by a matched load. Noise temperature is generally a function of frequency, unlike that of an ideal resistor which is simply equal to the actual ...

  4. How to Reduce Noise Pollution in Your Yard

    www.aol.com/news/2010-05-27-how-to-reduce-noise...

    Several "green" solutions exist that, when combined, can reduce the perception of noise. Here are some things you can do. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.

  5. Acoustical measurements and instrumentation - Wikipedia

    en.wikipedia.org/wiki/Acoustical_measurements...

    Here, examples include tweaking an automobile door latching mechanism to impress a consumer with a satisfying click or modifying an exhaust manifold to change the tone of an engine's rumble. Aircraft designers are also using acoustic instrumentation to reduce the noise generated on takeoff and landing.

  6. 5 Smart Home Upgrades that Can Make Every Day a Tiny ... - AOL

    www.aol.com/5-smart-home-upgrades-every...

    2. Smart Climate Control. If you tend to wake up in the middle of the night because it's too cold or hot, consider a smart ventilation system or smart thermostat.A climate control system adds both ...

  7. 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 ...

  8. Acoustic quieting - Wikipedia

    en.wikipedia.org/wiki/Acoustic_quieting

    Electronic noise control: Electronics, sensors, and computers are also employed to cancel noise by using phase cancellation which matches the sound amplitude with a wave of the opposite polarity. This method employs the use of an active sound generating device, such as a loudspeaker to counteract ambient noise in an area.

  9. ASHRAE 55 - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_55

    When measuring environmental data from the Building Automation System, sensor placement must align with the recommended criteria for physical measurements. Temperature sensors should achieve an accuracy of ±0.5°C (±1°F) and humidity sensors ±5% relative humidity. The trending capabilities require data to be recorded at intervals of no more ...

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