Abstract: An audio system may include a plurality of transducers, a temperature estimator, and a thermal control subsystem. The temperature estimator may be configured to monitor physical quantities associated with a plurality of transducers and based on the physical quantities, determine an estimated temperature associated with a first transducer of the plurality of transducers. The thermal control subsystem may be configured to generate an output signal based on an input signal, the output signal for driving the plurality of transducers and control the output signal based on the estimated temperature.

Abstract: A power management system for managing power consumption of a digital signal processor (DSP) that implements a protection system, the power management system comprising: a power management block configured to: detect a parameter indicative of a power of an input signal to the DSP; compare the detected parameter to a threshold; and responsive to a determination that the detected parameter is less than the threshold, cause one or more processing blocks of the DSP to enter a low power mode of operation.

Abstract: A system may include a first input configured to receive a playback signal to be played back to a transducer, a second input configured to receive temperature information associated with the transducer, and a thermal-controlled gain element configured to determine a sub-band gain to be applied to a selected frequency band of the playback signal, wherein the thermal-controlled gain element determines the gain based on the temperature information and apply the sub-band gain to the selected frequency band.