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  2. Acoustic quieting - Wikipedia

    en.wikipedia.org/wiki/Acoustic_quieting

    Sound redirection: One of the obvious ways to reduce the received sound level of an observer is to place the observer out of the path of the highest amplitude sounds. For example, in the area around a jet engine , the sound power levels can be expected to be largest (i.e., loudest) directly in line with the jet's exhaust.

  3. Anechoic chamber - Wikipedia

    en.wikipedia.org/wiki/Anechoic_chamber

    The mechanism by which anechoic chambers minimize the reflection of sound waves impinging onto their walls is as follows: In the included figure, an incident sound wave I is about to impinge onto a wall of an anechoic chamber. This wall is composed of a series of wedges W with height H.

  4. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Noise control is a set of strategies to reduce noise pollution by reducing noise at its source, by inhibiting sound propagation using noise barriers or similar, or by the use of ear protection (earmuffs or earplugs). [20] Control at the source is the most cost-effective way of providing noise control.

  5. The 7 Best Wireless Surround Sound Systems for an Immersive ...

    www.aol.com/lifestyle/best-wireless-surround...

    Wireless surround-sound systems offer the opportunity to improve your home theater audio without the need to tear up floors or drill into walls. You're still likely to plug in a power cord or two ...

  6. Portsmouth I-95 sound walls: When they're coming, how ... - AOL

    www.aol.com/portsmouth-95-sound-walls-theyre...

    NH officials putting sound walls in Portsmouth explain decibels of noise reduction and timeline for project residents have wanted for many years. Portsmouth I-95 sound walls: When they're coming ...

  7. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    Using a combination of sound absorption materials, arrays of microphones and speakers, and a digital processor, a restaurant operator can use a tablet computer to selectively control noise levels at different places in the restaurant: the microphone arrays pick up sound and send it to the digital processor, which controls the speakers to output ...

  8. 7 Ways to Improve Your "Sleep Hygiene" & Get a Good Night's Rest

    www.aol.com/7-ways-improve-sleep-hygiene...

    There are ways to get a good night’s rest and avoid daytime sleepiness, from better sleep hygiene to regular exercise and putting screens away earlier. Talk to your healthcare provider .

  9. Sound baffle - Wikipedia

    en.wikipedia.org/wiki/Sound_baffle

    Sound baffles on the wall of a recording studio. A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing noise pollution or reverberation. An important type of sound baffle is the noise barrier constructed along highways to