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  2. Keumyoung Group - Wikipedia

    en.wikipedia.org/wiki/Keumyoung_Group

    Kumyoung was first established as Namkyoung Industry, a manufacturer of video game arcade machine in Busan, South Korea in August 1983. The firm's name was changed to Kumyoung Industry in 1986 and later to Kumyoung Co. Ltd. in 1989 with the inauguration of Kim Sung Young as its CEO. The company focused on the production of karaoke system and ...

  3. Shigeichi Negishi - Wikipedia

    en.wikipedia.org/wiki/Shigeichi_Negishi

    Shigeichi Negishi (November 29, 1923 – January 26, 2024) was a Japanese engineer who invented the earliest prototype of the karaoke machine. Using a speaker, a microphone, and a tape deck, he was able to simultaneously amplify his voice and play an instrumental backing track. Although Daisuke Inoue receives more international recognition for ...

  4. Instrumentation amplifier - Wikipedia

    en.wikipedia.org/wiki/Instrumentation_amplifier

    An instrumentation amplifier (sometimes shorthanded as in-amp or InAmp) is a type of differential amplifier that has been outfitted with input buffer amplifiers, which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment. Additional characteristics include ...

  5. Crown International - Wikipedia

    en.wikipedia.org/wiki/Crown_International

    Crown International, or Crown Audio, is an American manufacturer of audio electronics, and is a subsidiary of Harman International Industries, which has been part of South Korea-based Samsung Electronics since 2017. Today, the company is known primarily for its power amplifiers, but has also manufactured microphones, loudspeakers, and a line of ...

  6. Mechanical amplifier - Wikipedia

    en.wikipedia.org/wiki/Mechanical_amplifier

    A mechanical amplifier or a mechanical amplifying element is a linkage mechanism that amplifies the magnitude of mechanical quantities such as force, displacement, velocity, acceleration and torque in linear and rotational systems. [1] In some applications, mechanical amplification induced by nature or unintentional oversights in man-made ...

  7. Instrument amplifier - Wikipedia

    en.wikipedia.org/wiki/Instrument_amplifier

    An instrument amplifier is an electronic device that converts the often barely audible or purely electronic signal of a musical instrument into a larger electronic signal to feed to a loudspeaker. An instrument amplifier is used with musical instruments such as an electric guitar, an electric bass, electric organ, electric piano, synthesizers ...

  8. 8-track cartridge - Wikipedia

    en.wikipedia.org/wiki/8-track_cartridge

    The 8-track tape (formally Stereo 8; commonly called eight-track cartridge, eight-track tape, and eight-track) is a magnetic-tape sound recording technology that was popular [ 2] from the mid-1960s to the early 1980s, when the compact cassette, which pre-dated the 8-track system, surpassed it in popularity for pre-recorded music. [ 3][ 4][ 5]

  9. Buffer amplifier - Wikipedia

    en.wikipedia.org/wiki/Buffer_amplifier

    Buffer amplifier. In electronics, a buffer amplifier is a unity gain amplifier that copies a signal from one circuit to another while transforming its electrical impedance to provide a more ideal source (with a lower output impedance for a voltage buffer or a higher output impedance for a current buffer ). This "buffers" the signal source in ...

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