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  2. Limit switch - Wikipedia

    en.wikipedia.org/wiki/Limit_switch

    A limit switch mounted on a moving part of a bridge. In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system, as a safety interlock, or as a counter enumerating objects passing a point.

  3. List of discontinued Bose headphones - Wikipedia

    en.wikipedia.org/wiki/List_of_discontinued_Bose...

    The Bluetooth Headset was criticized for having poor call quality, a lack of features and a high price tag. Bluetooth Headset Series 2. The "Bluetooth Headset Series 2" was sold from 2011 until 2015. Compared with its predecessor, the Series 2 included A2DP and a revised ambient noise sensing system. The Series 2 model was judged a "solid ...

  4. Aircraft engine controls - Wikipedia

    en.wikipedia.org/wiki/Aircraft_engine_controls

    Ignition switch - Activates the magnetos by opening the grounding or 'p-lead' circuit; with the p-lead ungrounded the magneto is free to send its high-voltage output to the spark plugs. In most aircraft the ignition switch also applies power to the starter motor during engine start. In piston aircraft engines, the battery does not generate the ...

  5. Sony - Wikipedia

    en.wikipedia.org/wiki/Sony

    Sony is a major audio products manufacturer and one of the active noise control technology leaders. Sony's high-end microphones and headphones for professional use are produced at Sony/Taiyo Corporation, a designated special subsidiary at which 67% of employees have a disability, in Ōita Prefecture, Japan. Video

  6. Wideband audio - Wikipedia

    en.wikipedia.org/wiki/Wideband_audio

    Wideband audio, also known as wideband voice or HD voice, is high definition voice quality for telephony audio, contrasted with standard digital telephony "toll quality". It extends the frequency range of audio signals transmitted over telephone lines, resulting in higher quality speech. The range of the human voice extends from 100 Hz to 17 ...

  7. Advanced Audio Coding - Wikipedia

    en.wikipedia.org/wiki/Advanced_Audio_Coding

    Advanced Audio Coding is designed to be the successor of the MPEG-1 Audio Layer 3, known as MP3 format, which was specified by ISO / IEC in 11172-3 ( MPEG-1 Audio) and 13818-3 ( MPEG-2 Audio). Blind tests in the late 1990s showed that AAC demonstrated greater sound quality and transparency than MP3 for files coded at the same bit rate.

  8. Opus (audio format) - Wikipedia

    en.wikipedia.org/wiki/Opus_(audio_format)

    Features Possible bitrate and latency combinations compared with other audio formats. Opus supports constant and variable bitrate encoding from 6 kbit/s to 510 kbit/s (or up to 256 kbit/s per channel for multi-channel tracks), frame sizes from 2.5 ms to 60 ms, and five sampling rates from 8 kHz (with 4 kHz bandwidth) to 48 kHz (with 20 kHz bandwidth, the human hearing range).

  9. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2] Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. [3] [4] Morse code is named after Samuel Morse, one of the early ...