Meaning; DIA: Defense Intelligence Agency (USA) DIA: Denver International Airport: DIA: Department of Internal Affairs
Crosstalk is a disturbance caused by the electric or magnetic fields of one telecommunication signal affecting a signal in an adjacent circuit. In an telephone circuit, crosstalk can result in your hearing part of a voice conversation from another circuit. The phenomenon that causes crosstalk is called electromagnetic interference (EMI). It can occur in microcircuits within computers and audio equipment as well as within network circuits.
The crossover is the circuit in the speaker which controls which frequencies each individual driver (woofer, midrange, tweeter...) plays. The crossover frequency is the frequency at which one driver 'takes over' from another. The crossover is a passive analog circuit consisting of resistors, capacitors and inductors, and are not 'brickwall' filters; around the cross over frequency, both drivers will be emitting sound.