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by aidenn0 1170 days ago
A CD is 16 bits, so you have 65536 possible values to oscillate between.

If you mean "does a 44khz only output a square (or triangle) wave at 22kHz, the answer is "no."

If you have two alternating values at 44kHz, the output will be a perfect (to the limits of noise &c.) sine wave, since the DAC is band limited.

If this is still confusing to you, I recommend watching https://www.youtube.com/watch?v=FG9jemV1T7I