Optimised Loudspeaker Operation

摘要

An optimised method for driving a loudspeaker is used for protecting the loudspeaker from damage due to excessive excursion or from overheating. The playback power of an incoming audio data stream is compared with a feedback power derived from the loudspeaker actuator and the comparison is used to adjust the frequency response of the loudspeaker, across individual sub bands.

主权项

1. A loudspeaker driver circuit comprising:
a first power calculation module for determining a playback power from incoming audio data; a second power calculation module for determining a feedback power from an actuator for driving the loudspeaker; and decision logic for comparing the playback and feedback powers and generating a command for adjusting a frequency response of the loudspeaker based on the comparison.