| Communications Toolbox | |
The quantization in the section Quantizing a Signal requires no a priori knowledge about the transmitted signal. In practice, you can often make educated guesses about the present signal based on past signal transmissions. Using such educated guesses to help quantize a signal is known as predictive quantization. The most common predictive quantization method is differential pulse code modulation (DPCM).
The functions dpcmenco, dpcmdeco, and dpcmopt can help you implement a DPCM predictive quantizer with a linear predictor.
| | Example: Optimizing Quantization Parameters | DPCM Terminology | |
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