When you gesture, you bring more air into the lungs, which can make your voice sound warmer.

当你做手势的时候，你会把更多的空气吸入肺部，这会让你的声音听起来更温暖。

youdao

The sound of his voice sent shivers down her spine.

一听见他的说话声，她就背上一阵阵发冷。

《牛津词典》

Ada stiffened at the sound of his voice.

听到他的声音，艾达僵住了。

《柯林斯英汉双解大词典》

I talked more and with a heightened voice. Yet the sound increased -- and what could I do?

VOA: special.2009.05.16

The technology would enable a person talking to someone with a loud, high-pitched, rapid-fire voice to sound similar even if his actual voice was soft, low and slow, for instance.

FORBES: Stanford Developing Vocal Cosmetics Technology To Make Cellphone Talkers More Likable

For those who have heard previous messages from Osama bin Laden, the voice did sound familiar.

NPR: Bin Laden Tape Won't Raise Security Levels

The stunning audio and voice performance of the Sound Blaster Recon3D sound cards is powered by Creative's new Sound Core3D, the world's first quad-core sound and voice processor.

ENGADGET: Creative doles out Sound Blaster gaming headsets, Recon3D audio platform / sound cards