| 摘要 |
<p>A method and apparatus for encoding digital data within digital words representing signal waveforms, includes the step of modifying least significant digits of the digital words representing signal waveforms in dependence upon the digital data. This is achieved by pseudo-randomising the digital data thereby forming data noise words having levels which are small relative to those of the waveform words, subtracting the pseudo-randomised data words from the waveform words to thereby produce a dithered waveform word, and then quantizing the dithered waveform word and adding the data noise word to the quantized word to thereby form an output of reduced noise carrying information representing the digital data in its least significant digits.</p> |
