Sensitivity of an actuator
For an actuator, the sensitivity is given by:
where is the input voltage and is the acoustic pressure output at a particular position. Its unit is Pascal/Volt .
For loudspeakers drivers, the sensitivity commonly corresponds to an acoustic pressure level on axis at with the driver mounted in an infinite baffle and subject to a pink noise signal. This signal is tailored to the drivers bandwidth.
Définition : Definition
Pink noise is a random signal whose energy is inversly proportional to frequency