USB Asynchronous in ComputerSpeak
USB Asynchronous means that the Computer’s clock isn’t synchronized to the receiving DAC’s clock. The computer’s clocks been fired and the DAC’s clock tells the computer’s output USB port exactly when to send each frame of music data. An Asynchronous DAC will have a high precision fixed clock that it uses to tell the computer when to send each data packet. Think of a little guy with a metronome in his hand saying “SEND” each time the Metronome clicks. The same metronome click is used by the DAC’s dac chip to convert each batch of 1′s and zero’s to analog sound you can hear. Fixed clocks are more precise than variable so you get better timing in your music decoding and better sound as a result.
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發表於 2013-4-15 22:04:09
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