| 摘要 |
In an improved digital DPCM-coder having a high calculating speed, a second quantizer is provided which is supplied with a DPCM-signal determined in a calculating loop, and which emits from its output a quantized DPCM-signal multiplied by a prediction factor. With the improved coder, one calculating operation less is required, and the coder can process a higher PCM-data rate at a constant calculating speed of the components.
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