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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“Homer and Shakespeare and Milton and Marvell and Wordsworth are but the rustling of leaves and crackling of twigs in the forest, and there is not yet the sound of any bird. The Muse has never lifted up her voice to sing.”
—Henry David Thoreau (1817–1862)
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