Hospital corpsmen were previously trained at Naval Hospital Corps School, Great Lakes, Illinois until the 2011 Base Realignment and Closure Bill caused Hospital Corps School to be relocated to the Medical Education and Training Campus (METC) at Joint Base San Antonio, Texas.
characteristic of highness or lowness of a sound is called The frequency of a sound wave determines the pitch of the sound you hear. Remember that frequency is the number of waves passing a fixed point in a given period of time. A high-frequency wave with short wave-lengths, such as that produced by a tiny flute, makes a high-pitched sound.
[â]tehnomad 1 point2 points3 points 3 years ago (4 children) It's actually only higher in timbre. The fundamental frequency of your voice is determined by the rate at which your vocal cords vibrate, which doesn't change if you switch from air to helium/hydrogen/xenon/etc. Changing the gas you breathe changes the way sound resonates in your vocal tract, which makes it sound like the pitch is changing.