Apparently, it was this devoiced, "whispered" w for which Middle English scribes, under French influence, invented the spelling wh-.
显然，正是由于这个清音化，“whispered”中的w在中古英语的文书中，受到法语的影响，发明了拼写wh-。voiceless, labiodental, fricative, aspirated, strong, long.
清音，唇齿音，摩擦音，送气，强，长。Where symbols appear in pairs, the one to the right represents a voiced consonant. Shaded areas denote articulations judged impossible.
音标成对出现时，左边为清音，右边为浊音。涂色的部分已判定为不可能发音的组合。The simulation results show that the proposed method can separate unvoiced and voiced signals.
仿真结果表明，该方法既能分离清音信号，也能分离浊音信号。Conclusions: Traditional Chinese medicine Qingyinyin is ideal in treating chronic pharyngitis .
结论：“清音饮”是治疗慢性咽炎较理想的方剂。The clear [ l ] occur only before a vowel, the voiceless equivalent [ l ] occur only after a voiceless consonant.
例如，[l]的不同音素。清晰的[l]只出现在元音前，而[l]的清音形式只出现与清辅音之后。In addition, the correlation-enhanced unvoiced signal can be effectively separated by using the recursive least squares algorithm.
使用递归最小二乘算法可有效分离出相关增强后的清音信号；In other places, the coexistence continues.
在其他地方，这种清音和浊音仍然共存。This is online map of the address "Sui Shan Zhen Si Qing Yin Lu , Emeishan City, Leshan City, Sichuan Province, China" .
这是地址“中国四川省乐山市峨眉山市绥山镇司清音路”匹配的在线电子地图。