A sound chip is an integrated circuit (i.e. "chip") designed to produce sound (see chiptune). It might be doing this through digital, analog or mixed-mode electronics. Sound chips normally contain things like oscillators, envelope controllers, samplers, filters and amplifiers.
Read more about Sound Chip: Programmable Sound Generators (PSG), Frequency Modulation Synthesis (FM Synth), Pulse-code Modulation (PCM, Sample-based)
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“America is a hurricane, and the only people who do not hear the sound are those fortunate if incredibly stupid and smug White Protestants who live in the center, in the serene eye of the big wind.”
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