When a source is sounded, it generally vibrates in more than one mode and therefore, emits tones of different frequencies. The tone of lowest frequency is called the fundamental note and the tones of higher frequencies are called over tones.
When a source is sounded, it generally vibrates in more than one mode and therefore, emits tones of different frequencies. The tone of lowest frequency is called the fundamental note and the tones of higher frequencies are called over tones.