Patent 10231053 was granted and assigned to Facebook on March, 2019 by the United States Patent and Trademark Office.
Embodiments relate to cancelling crosstalk vibrations due to the use of multiple bone conduction transducers by modifying bone conduction signals sent to the bone conduction transducers. The bone conduction signals are modified using an adaptive filter with its coefficients adjusted based on the vibrations generated at a bone conduction transducer and crosstalk vibrations sensed at a vibration sensor assembly. The bone conduction transducer for generating the calibration vibrations and the vibration sensor assembly for detecting the crosstalk vibrations may be placed at opposite sides of the user's head.