Acoustic wave propagation 2 Spherical waves article 2 calculation 2 sound 2 Acoustic Impedance Tests 1 Acoustic Stimulation 1 Acoustic emissions 1 Acoustic impedance 1 Acoustic pressures 1 Acoustic radiation modes 1 Acoustic radiators 1 Acoustic variables control 1 Acoustic wave transmission 1 Acoustics 1 Boundary element method 1 Boundary integral equations 1 Boundary integral equations (BIE) 1 Canals 1 Characteristic impedance 1 Complex-valued quantities 1 Computational effort 1 Decomposition 1 Ear Canal 1 Elastic waves 1 Generalized singular value decomposition 1 Humans 1 Models, Theoretical 1 Propagating waves 1 Reflection 1