acoustic impedance acoustic impedance /əˈkuːstɪk ɪmˈpiːdəns/

noun

1. 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  ( acoustic impedance , acoustic reactance , acoustic resistance )
   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