在中文中，"提高某人的嗓门" 可以翻译为 "improve someone's vocal range" 或 "increase someone's vocal range"。这个表达来源于英语中的 "vocal range"，指的是某个人能够唱出的最高和最低音的范围。
下面是一些例句：
I took singing lessons to improve my vocal range. (我上了唱歌课来提高我的嗓门。)
She has a very wide vocal range and can hit high and low notes easily. (她有着很宽的嗓门，能轻松地唱出高音和低音。)
To increase your vocal range, you can try singing scales and practicing vocal exercises. (为了提高你的嗓门，你可以尝试唱音阶和练习声乐练习。)