Variation of acoustic impedance of metals in solid form with ultrasonic velocity

The acoustic impedance is an important characteristic of materials for nearly all sonic and ultrasonic applications. As in the electrical analogy it will determine the efficiency of every transmission in the system from one element to another. The acoustic impedance of an instrument for any particular fingering is one of the major factors which determines the acoustic response of the instrument in that fingering. It determines which notes can be played with that fingering, how stable they are and it also helps determine whether they are in tune. The acoustic impedance also has a large influence on the sound produced