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2. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer [1]: 597 that converts an electrical audio signal into a corresponding sound. [2]

3. Loudspeaker enclosure - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker_enclosure

   A passive radiator speaker uses a second passive driver, or drone, to produce similar low-frequency extension, or efficiency increase, or enclosure size reduction, similar to ported enclosures. Small [ 27 ] [ 28 ] and Hurlburt [ 29 ] have published the results of research into the analysis and design of passive-radiator loudspeaker systems.

4. Line array - Wikipedia

   en.wikipedia.org/wiki/Line_array

   Olson used line array concepts to develop the column speaker in which vertically aligned drivers in a single enclosure produced mid-range output in a wide horizontal and narrow vertical pattern. Line arrays have been around for over half a century but until recently most were voice range only.

5. 5.1 surround sound - Wikipedia

   en.wikipedia.org/wiki/5.1_surround_sound

   The left and right surround speakers in the bottom line create the surround sound effect. 5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full-bandwidth channels and one low-frequency effects channel (the "point one"). [2]

6. Audio and video interfaces and connectors - Wikipedia

   en.wikipedia.org/wiki/Audio_and_video_interfaces...

   Several generic digital data connection standards are designed to carry audio/video data along with other data and power: USB was designed as a single connector to support all needs, including any generic data, audio/video, power, and more; DisplayLink is its most successful Audio+Video protocol. Until the 3.0 revision, very low data rates ...

7. Voigt pipe - Wikipedia

   en.wikipedia.org/wiki/Voigt_pipe

   Its relatively low adoption in commercial speakers can mostly be attributed to the large resulting dimensions of the speaker produced and the expense of manufacturing a rigid tapering tube. The Voigt pipe was designed in 1934 by Paul G. A. H. Voigt and is also referred to as a tapered quarter-wave pipe (TQWP) or tapered quarter-wave tube (TQWT).