Acoustic apparatus
Acoustic apparatus and driving apparatus constituting the same
Active noise-attenuating duct element
Active reactive acoustical elements
Actively control sound transducer
Adaptive arrangement for correcting the transfer characteristic
Adaptive controller for actuator systems
Adaptive filter for correcting the transfer characteristic of el
Amplifier unit
Arrangement to correct the linear and nonlinear transfer behavio
Audio power amplifier system with frequency selective damping fa
Audio reproducing apparatus
Audio speaker system
Bass amplifier with high frequency response
Bass enhancing device for a speaker system
Bass intensification device for speaker system
Bass reproduction speaker apparatus
Circuit and method for compensating low frequency band for use i
Device for active simultation of an acoustical impedance
Device for improving bass reproduction in loudspeaker system wit