The resolution of binary integers increases exponentially as the word length increases. The resolution indicates the number of discrete values that can be represented over the range of analog values. ![]() The amplitude is the only information explicitly stored in the sample, and it is typically stored as either an integer or a floating point number, encoded as a binary number with a fixed number of digits: the sample's bit depth, also referred to as word length or word size. Each sample represents the amplitude of the signal at a specific point in time, and the samples are uniformly spaced in time. A PCM signal is a sequence of digital audio samples containing the data providing the necessary information to reconstruct the original analog signal.
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