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一、自适应增量调制(ADM)方式到上一节为止,简单地讲解了波形编码方式和频谱编码方式这两大类具有代表性的话音合成法。在这一节里,将讲解一般性的自适应增量调制方式以及从这一方式派生出来的音节压缩扩展增量调制方式。后文所要介绍的无磁带录音机,采用的就是后一种方式。如前所述,增量调制(ΔM)方式是从采样值的时间序列来预测出现在值,以1个比特来对它与实际值之差加以编码的方式(判断其大小的方式),特点是编码系统和话音合成系统的
First, the adaptive delta-modulation (ADM) approach to the previous section so far, simply introduced the waveform encoding and spectral encoding two representative types of speech synthesis method. In this section, we will explain the general adaptive delta modulation method and the syllable compression extended delta modulation method derived from this method. To be introduced later tapeless tape recorder, using the latter way. As mentioned above, the Delta Modulation (AM) method is a method of predicting the occurrence of a value from a time series of sampled values, encoding the difference between it and the actual value by 1 bit (a method of determining the size), a feature Is a coding system and speech synthesis system