Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Reexamination Certificate
2006-05-09
2011-11-29
Mei, Xu (Department: 2614)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
Reexamination Certificate
active
08068615
ABSTRACT:
A transformer saturation compensation circuit for loudspeakers in embodiments of the invention may include one or more of the following features: (a) a transformer with a primary winding and a secondary winding electrically coupled to an output, (b) a high pass filter, (c) a current dependent resistive load electrically coupled in parallel with the capacitor and electrically coupled to an input, (d) a switch located at the primary winding electrically coupled to the capacitor and the resistive load, the switch being rotatable to each of the taps, where the current dependent resistive load provides saturation compensation for different loudspeaker configurations without requiring changes to a highpass filter cutoff frequency, and (e) a resistive load electrically coupled in parallel with the current dependent resistive load and the capacitor.
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Bosch Security Systems Inc.
Fredrikson & Byron , P.A.
Lun-See Lao
Mei Xu
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