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  2. Acoustic panel - Wikipedia

    en.wikipedia.org/wiki/Acoustic_panel

    An acoustic board is a board made from sound absorbing materials, designed to provide sound insulation. [3] [4] Between two outer walls sound absorbing material is inserted and the wall is porous. Thus, when sound passes through an acoustic board, the intensity of sound is decreased. The loss of sound energy is balanced by producing heat energy.

  3. Soundproofing - Wikipedia

    en.wikipedia.org/wiki/Soundproofing

    The main focus of a residential sound program in existing structures is the windows and doors. Solid wood doors are a better sound barrier than hollow doors. [9] Curtains can be used to dampen sound, either through use of heavy materials or through the use of air chambers known as honeycombs. Single-, double- and triple-honeycomb designs ...

  4. Covox Speech Thing - Wikipedia

    en.wikipedia.org/wiki/Covox_Speech_Thing

    Covox Voice Master Junior – Later cheaper ($39.95) variant that plugs into Atari joystick port and contains an electret microphone for recording sounds for playback or recognition and a speaker. [31] [32] Also as described in a 1991 COVOX Company Profile: [33] Covox Sound Master – 1984 for Apple II, 1989 for MS-DOS; Covox Voice Master ...

  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. List of video connectors - Wikipedia

    en.wikipedia.org/wiki/List_of_video_connectors

    Male Mini-VGA plug on top of an Apple laptop, female port is second from right. Mini-VGA (used for laptops) Used for laptops, especially from Apple Computer and some from Sony. AV Multi (gold-plated male plug) AV Multi: Sony proprietary. Combines composite video, S-Video, RGsB/YP B P R (both use same pins) and stereophonic sound (two analog ...

  7. Laminated glass - Wikipedia

    en.wikipedia.org/wiki/Laminated_glass

    In geographical areas requiring hurricane-resistant construction, laminated glass is often used in exterior storefronts, curtain walls, and windows. Laminated glass is also used to increase the sound insulation rating of a window, because it significantly improves sound attenuation compared to monolithic glass panes of the same thickness.

  8. An Airplane’s Door Plug Popped off Mid-Flight—And ... - AOL

    www.aol.com/airplane-door-plug-popped-off...

    What’s the deal with 737 window plugs? The stretched 737 MAX-9 variant is the largest of three passenger-carrying 737 MAX models in service, with a maximum seating expanded to 221 passengers ...

  9. Sound transmission class - Wikipedia

    en.wikipedia.org/wiki/Sound_transmission_class

    Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. Outside the US, the ISO Sound Reduction Index (SRI) is used.