Pulse Code Modulation (PCM) is the simplest form of waveform coding. Waveform coding is used to encode analogue signals (for example speech) into a digital signal. The digital signal is subsequently ...

Simulating a Differential Pulse-Code Modulation (DPCM) with Uniform Quantizer DPCM: In Differential Pulse Code Modulation the quantized signal sent to the receiver is the difference between the ...

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This paper is concerned with the utilization of speech waveform periodicities in differential pulse code modulation (dpcm) coding with 2-bit adaptive quantization and time-invariant spectrum ...

Delta modulation is a technique of encoding analog signals into digital bits by comparing the difference between successive samples. PCM, or pulse code modulation, is another technique that ...

The objectives of this investigation were twofold: 1) to demonstrate the utility of the nine-point speech "goodness" rating scale as a method for scaling user opinion of speech quality, and 2) to use ...