JMC method applied to active control of sound : theoretical extensions and new source configurations / JMC method applied to active control of sound : theoretical extensions and new source configurations /Thesis (doctoral)--Helsinki University of Technology, ......
The mass law has a lower bound given by the lower mechanical resonance of the system. This resonance corresponds to the mass-spring-mass resonance of the wall, where the air enclosed in the gap acts as a spring, while the walls act like two masses. A two degrees of freedom system has ...