作為社會動物，我們在跟不同的人打交道時會使用不用的說話方式，比如，跟不太熟悉的人說話時我們的語氣可能會更可氣一些，而跟自己男、女朋友說話時，可能就會撒撒嬌，說點軟言細語。這就是我們生活中常用的兩種語調：生人語調和女友專用調。

People voice is the voice that someone uses when talking to strangers or people they are not familiar with. This voice is automatically happy, nicer and sweeter than their normal voice. It is often with a higher pitch. This is often the voice people use when answering a phone call or when working in retails.
“生人語調”指人們在跟陌生人或者自己不太熟悉的人說話時使用的語調。這種語調一般都不自覺地比正常語調要顯得快樂、更友好也更甜美，而且聲調通常也比較高。人們在接電話或者在零售業工作的時候會用這種語調說話。

Girlfriend voice refers to the change in pitch or tone of a man's voice when talking to their significant other. The girlfriend voice is characterized by a higher pitch and a more effeminate tone with speech patterns scattered with pet names and childish words.
“女友專用調”指男士在跟自己的另一半說話時聲調和語氣上的變化。這種變化主要體現為：聲調提高、語調更顯溫柔，并且不時夾雜著各種愛稱和幼稚的語言。

（中國日報網英語點津 Helen）