Sensitivity. This is the sound pressure level a speaker produces
at 1 meter (m) when driven with 1 watt (W) of pink noise. Pink
noise is random noise with equal energy per octave. This noise
is either band-limited to the range of the speaker or is a onethird-octave band centered at 1kHz. Sensitivity is measured in
dB/W/m (dB sound pressure level per 1W at 1m)