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- [T]he SN76477 generates complex audio signal waveforms by combining the outputs of a low frequency oscillator, variable frequency oscillator and noise source, modulating the resulting composite signal with a selected envelope and, finally, adjusting the signal's attack and decay periods. At each stage, the process can be controlled at the programming inputs of the signal modification and generation circuits, using control voltages, logic levels, or different resistor and capacitor values. (en)
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