每一个设计都是为了在某种程度上改变声音，首先至少在电吉他上是这样，让声音更大。
Each design was intended to alter the sound in some way, at first at least with the electric guitar, to make it louder.
广告人通过电子手段改变声音使其始终处于该频段内。
Advertisers electronically vary voice sounds so that they stay within such a frequency band.
恰当的改变声音来描绘出角色的年龄和个性也是个大挑战。
Another challenge is changing your voice to accurately portray the age and personality of a character.
我希望他会同意。况且改变声音对他大有好处。你最近听过他唱歌吗？
I hope he agrees to do it. Anyway, a voice change will do him a world of good. Have you heard him try to sing lately?
峰会现在要开始使用更激进的设计，试验，看看他们是如何改变声音。
Summit now wants to start experimenting with more radical designs to see how they change the sound.
为了解释气囊如何改变声音，deBoer博士制作了口腔、舌和喉的塑料模型，并压入空气使之发出不同的元音。
To find out how having an air sac changed the sounds produced, Dr DE Boer created plastic models of the mouth, tongue and throat and forced air down them to produce different vowel sounds.
在我们观察示波器(用来显示波形形态的设备)的时候可以发现，在基频上面增加谐频可以很大程度上改变声音的形态。
When we look on an oscilloscope a device for visually displaying what a waveform's shape is, we see that adding harmonics to the fundamental changes the shape of the wave.
在我们观察示波器(用来显示波形形态的设备)的时候可以发现，在基频上面增加谐频可以很大程度上改变声音的形态。
When we look on an oscilloscope a device for visually displaying what a waveform's shape is, we see that adding harmonics to the fundamental changes the shape of the wave.
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