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  2. Liquid sound - Wikipedia

    en.wikipedia.org/wiki/Liquid_sound

    Remann performed initial experiments with light and sound technology in 1986 at the so-called "Frankfurt Underwater Concert" in what was at that time the Central Municipal Indoor Swimming Pool (today, the "Wave" in the Hilton Hotel in Frankfurt) as an artistic performance. One of the participating musicians, among others, was Alfred Harth. [3]

  3. 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 ...

  4. Acoustic quieting - Wikipedia

    en.wikipedia.org/wiki/Acoustic_quieting

    Sound reflections: by limiting the reflection using many methods, e.g. by using acoustic absorption (deadening) materials, trapping the sound, opening a "window" to let sound out, etc. By analyzing the entire sequence of events, from the source to the observer, an acoustic engineer can provide many ways to quieten the machine.

  5. Acoustic foam - Wikipedia

    en.wikipedia.org/wiki/Acoustic_foam

    Acoustic foam tiles are suited to placing on sonically reflective surfaces to act as sound absorbers, thus enhancing or changing the sound properties of a room. [ 11 ] This type of sound absorption is different from soundproofing, which is typically used to keep sound from escaping or entering a room rather than changing the properties of sound ...

  6. Absorption (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Absorption_(acoustics)

    Soundproofing aims to absorb as much sound energy (often in particular frequencies) as possible converting it into heat or transmitting it away from a certain location. [ 3 ] In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators - absorbing most sound, whereas dense, hard, impenetrable materials (such as ...

  7. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Besides noise control, acoustical engineering also covers positive uses of sound, such as the use of ultrasound in medicine, programming digital synthesizers, designing concert halls to enhance the sound of orchestras [2] and specifying railway station sound systems so that announcements are intelligible.

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  9. Pool equipment - Wikipedia

    en.wikipedia.org/wiki/Pool_equipment

    Pool equipment may refer to: Cue sports equipment, sporting goods used for playing pool (pocket billiards) Sanitation and other general equipment for swimming pools;

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