The audio subsystem of a PC satisfying the Level 1 specification includes the following items:

• An 8-bit digital-to-analog converter (DAC) capable of processing waveform-audio files recorded at 22.05 and 11.025 kHz sampling rates

• An 8-bit analog-to-digital converter (ADC) capable of recording waveform-audio files at the sample rate of 11.025 kHz through an external source, such as a microphone

• Internal synthesizer capabilities with four or nine multivoice, multitimbral capacity, and two simultaneous percussive notes

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