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  2. Lenovo Yoga 2 Pro - Wikipedia

    en.wikipedia.org/wiki/Lenovo_Yoga_2_Pro

    The Yoga 2 Pro's backlit AccuType keyboard. The Yoga 2 Pro is an Ultrabook-class device. It weighs 3.1 lb (1.4 kg), is 0.61 inch thick and has tapered edges, giving it an appearance more like a conventional ultrabook laptop vs the earlier model's "book-like" symmetrical design.

  3. Motorboating (electronics) - Wikipedia

    en.wikipedia.org/wiki/Motorboating_(electronics)

    In electronics, motorboating is a type of low frequency parasitic oscillation (unwanted cyclic variation of the output voltage) that sometimes occurs in audio and radio equipment and often manifests itself as a sound similar to an idling motorboat engine, a "put-put-put", in audio output from speakers or earphones.

  4. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    Since a conventional speaker is similar in construction to a dynamic microphone (with a diaphragm, coil and magnet), speakers can actually work "in reverse" as microphones. Reciprocity applies, so the resulting microphone has the same impairments as a single-driver loudspeaker: limited low- and high-end frequency response, poorly controlled ...

  5. Audio feedback - Wikipedia

    en.wikipedia.org/wiki/Audio_feedback

    Block diagram of the signal-flow for a common feedback loop [1]: 118 . Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation that may occur when an acoustic path exists between an audio output (for example, a loudspeaker) and its audio input (for example, a microphone or guitar pickup).

  6. Electrostatic loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Electrostatic_loudspeaker

    Dave Wilson of Wilson audio, used JansZen tweeters in his famous, WAMM, Wilson Audio Modulator Monitor. That speaker sold for $220,000 a pair when it was discontinued. The developers of the Tri-Ergon sound-on-film sound film system had developed a primitive design of electrostatic loudspeaker as early as 1919.

  7. Laptop - Wikipedia

    en.wikipedia.org/wiki/Laptop

    Clockwise from top left: A 2021 MacBook Pro by Apple Inc.; a 2019 Microsoft Surface Pro 7 with detachable hinge (left) and a 2018 Dell XPS 15 9570 with 360 degree hinge (right); a 2014 ThinkPad Helix by Lenovo with detachable screen; and a 2014 Acer Chromebook 11. A laptop computer or notebook computer, also known as a laptop or notebook, is a ...

  8. Diaphragm (acoustics) - Wikipedia

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

    Microphone diaphragms, unlike speaker diaphragms, tend to be thin and flexible, since they need to absorb as much sound as possible. In a condenser microphone, the diaphragm is placed in front of a plate and is charged. [2] In a dynamic microphone, the diaphragm is glued to a magnetic coil, similar to the one in a dynamic loudspeaker.

  9. Magnetostatic loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Magnetostatic_loudspeaker

    Magnetostatic speakers provide good sound quality, and may be very thin, but for producing also lower frequencies with good enough sensitivity, their height and width dimensions must be rather large. [1] Magnepan is the main producer of magnetostatic loudspeakers for high fidelity home audio.