Patent ID: 8750525

Claim:
A loudspeaker system, comprising: a loudspeaker including a loudspeaker coil; a temperature sensor positioned in close proximity to said loudspeaker and configured to generate a temperature signal which is based on both a temperature of the loudspeaker and on an ambient temperature of an environment in which said loudspeaker is disposed; a temperature component including a thermal modeling element arranged to determine an estimated relative temperature associated with the loudspeaker coil based on an input audio signal and a predetermined thermal response characteristic associated with the loudspeaker; a summer coupled to an output of the thermal modeling element and configured to sum an output from the thermal modeling element with a measured temperature value derived from said temperature signal to determine an absolute temperature of said loudspeaker coil; a control component arranged to provide a gain factor based on the absolute temperature; and a gain component arranged to provide a gain controlled audio signal for said loudspeaker by selectively controlling a gain applied to the input audio signal based on the gain factor.