Encoded sound: analog to digital - (copy)
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  1. Study this chart. It is a simplified example of how we take a continuous analog sound wave and sample it at discrete times so we can measure the amplitude and turn that into a binary code (1s and 0s) to create a digital transmission. Wow, bet you didn't think you'd be able to read that in August. Select the choice below that best describes the pros and cons of this particular encoded signal.

    This example shows all the higher amplitude waves have been encoded well, but the lower amplitude waves have not. It will sound a bit higher pitched than the original analog signal.
    The digital encoding of the original analog signal is very exact throughout the signal. It would be almost impossible to tell the difference between the analog and digital signals.
    The digital encoding does not capture all the higher amplitude waves, but does well with the lower ones. The lower amplitude signals will sound the same, but some of the higher amplitude sounds will be lost.





Rebecca Thompson