basic pitch

基本解释

For example, by measuring the basic pitch, you measure the density of the universe.
例如，通过测量基本音高来测量宇宙的密度。
Music is an aural language which uses three basic components: pitch, rhythm, and timbre or the quality of a sound.
音乐是一种听觉语言，它运用到了音调、节奏、音色等三个基本要素。
The larger the air chamber of Ocarina is, the basic sound has lower pitch.
陶笛的共鸣气腔越大，其基本音就越低。

One group was taught the basic fundamentals of music, including pitch, rhythm, melody and other concepts. (You can see an example here.) The other group was taught visual art training in the basics such as shapes, colors, lines, and other concepts.
FORBES: Music Training Improves Verbal Intelligence in Children
Researchers at Duke University have discovered that, despite strong belief to the contrary, mice do have basic vocal learning ability, allowing them to keep pitch, or to you and me -- sing.
ENGADGET: Alt-week 10.13.12: is the Universe a simulation, cloning dinosaurs and singing mice