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  2. Line array - Wikipedia

    en.wikipedia.org/wiki/Line_array

    As a line source propagates sound equally in all directions in the free field, the sound propagates in the shape of a cylinder rather than a sphere. Since the surface area of the curved surface of a cylinder = 2π r h, where r is the radius and h is the height, every doubling of the radius results in a doubling of the surface area, thus the ...

  3. Output device - Wikipedia

    en.wikipedia.org/wiki/Output_device

    A speaker is an output device that produces sound through an oscillating transducer called a driver. The equivalent input device is a microphone . Speakers are plugged into a computer's sound card via a myriad of interfaces, such as a phone connector for analog audio, or SPDIF for digital audio.

  4. Line level - Wikipedia

    en.wikipedia.org/wiki/Line_level

    Line out provides an audio signal output and line in receives a signal input. The line in/out connections on consumer-oriented audio equipment are typically unbalanced, with a 3.5 mm (0.14 inch, but commonly called "eighth inch") 3-conductor TRS minijack connector providing ground, left channel, and right channel, or stereo RCA jacks.

  5. Electrical characteristics of dynamic loudspeakers - Wikipedia

    en.wikipedia.org/wiki/Electrical_characteristics...

    The electrical signal generated by the coil travels back along the speaker cable to the amplifier. Well-designed amplifiers have low output impedance so that this generated signal has minimal effect on the amplifier. Characteristically, solid state amplifiers have had much lower output impedances than tube amplifiers. So much so, that ...

  6. Audio power - Wikipedia

    en.wikipedia.org/wiki/Audio_power

    Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts.The electrical power delivered to the loudspeaker, together with its efficiency, determines the sound power generated (with the rest of the electrical power being converted to heat).

  7. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    Output power for amplifiers is ideally measured and quoted as maximum Root Mean Square power output per channel, at a specified distortion level at a particular load, which, by convention and government regulation, is considered the most meaningful measure of power available on music signals, though real, non-clipping music has a high peak-to ...

  8. 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]

  9. Sound card - Wikipedia

    en.wikipedia.org/wiki/Sound_card

    Analog line level audio output for the main stereo signal (front speakers or headphones) Output 3.5 mm minijack Arrow going out one side of a circle into a wave Orange: 157 C Analog line level audio output for center channel speaker and subwoofer: Output 3.5 mm minijack Black: Analog line-level audio output for surround speakers, typically rear ...