What is differential pulse code modulation?
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Hey dear....
Differential pulse-code modulation(DPCM) is a signal encoder that uses the baseline of pulse-code modulation(PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal
Hope it helps you!!!!!
Differential pulse-code modulation(DPCM) is a signal encoder that uses the baseline of pulse-code modulation(PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal
Hope it helps you!!!!!
Answered by
4
Differential pulse-code modulation is a signal encoder that uses the baseline of pulse-code modulation but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal.
Option 1: take the values of two consecutive samples; if they are analog samples, quantize them; calculate the difference between the first one and the next; the output is the difference, and it can be further entropy coded.
Option 2: instead of taking a differen
ce relative to a previous input sample, take the difference relative to the output of a local model of the decoder process; in this option, the difference can be quantized, which allows a good way to incorporate a controlled loss in the encoding.
Option 1: take the values of two consecutive samples; if they are analog samples, quantize them; calculate the difference between the first one and the next; the output is the difference, and it can be further entropy coded.
Option 2: instead of taking a differen
ce relative to a previous input sample, take the difference relative to the output of a local model of the decoder process; in this option, the difference can be quantized, which allows a good way to incorporate a controlled loss in the encoding.
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