Noun
opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component
Source: WordNetThe main reason for this is the difficulty of achieving proper impedance matching between the acoustic impedance of the drive unit and the air it radiates into. Source: Internet
Other types Different microscopes Scanning acoustic microscopes use sound waves to measure variations in acoustic impedance. Source: Internet
Spruce's high ratio of strength to weight minimizes acoustic impedance while offering strength sufficient to withstand the downward force of the strings. Source: Internet
The correct technical explanation is that they allow a better match to the acoustic impedance of the air. Source: Internet