Читать книгу Vibroacoustic Simulation - Alexander Peiffer - Страница 83

1 1 Keeping v0≠0 would lead to the convective wave equation that is used in the context of flow related acoustic problems, which is more a topic of aero acoustics

2 2 Negative k means propagation in positive x-direction, because of the jωt convention. This is the reason why pure acoustic textbooks usually take the −jωt convention in order to get positive wavenumber for positive propagation.

3 3 This can be proven using the relationship between the δ and exponential functions