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  2. Tonewheel - Wikipedia

    en.wikipedia.org/wiki/Tonewheel

    Simplified diagram of how a tonewheel works Goldschmidt tone wheel (1910), used as an early beat frequency oscillator. A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond organ and in telephony to generate audible signals such as ringing tone.

  3. Programmable sound generator - Wikipedia

    en.wikipedia.org/wiki/Programmable_sound_generator

    A programmable sound generator (PSG) is a sound chip that generates (or synthesizes) audio wave signals built from one or more basic waveforms, and often some kind of noise. PSGs use a relatively simple method of creating sound compared to other methods such as frequency modulation synthesis or pulse-code modulation .

  4. Texas Instruments SN76489 - Wikipedia

    en.wikipedia.org/wiki/Texas_Instruments_SN76489

    The Texas Instruments SN76489 is a programmable sound generator chip from the 1980s, used to create music and sound effects on computers and video game systems. Initially developed by Texas Instruments for its TI-99/4A home computer, it was later updated and widely adopted in systems like the BBC Micro , ColecoVision , IBM PCjr , Sega's Master ...

  5. List of Hammond organs - Wikipedia

    en.wikipedia.org/wiki/List_of_Hammond_organs

    It consists of two units — a 3-octave mini keyboard attaching under the piano keyboard, and a tone cabinet including electronic sound generator, amplifier and loudspeaker. [42] The sound generator is based on a vacuum tube oscillator and octave divider circuits originally designed for Novachord. There are three minor changed models: [41]

  6. Sound generator - Wikipedia

    en.wikipedia.org/wiki/Sound_generator

    A sound generator is a vibrating object which produces a sound. There are two main kinds of sound generators (thus, two main kinds of musical instruments).. A full cycle of a sound wave will be described in each example which consists of initial normal conditions (no fluctuations in atmospheric pressure), an increase of air pressure, a subsequent decrease in air pressure which brings it back ...

  7. Yamaha PTX8 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_PTX8

    The PTX8 has mixed stereo L/R outputs and 8 individual outputs (one per Tone Generator). When none of the individual outputs are being used, tone generators are panned across the stereo output. Tone generators 3 & 4 are panned left, 1, 2, 7, & 8 are panned center; 5 & 6 are panned right.

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