Dynamic on ear headset detection
AssigneeCirrus Logic, Inc.
InventorsVitaliy Sapozhnykov, Thomas Ivan Harvey, Nafiseh Erfaniansaeedi, Robert Luke
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Abstract
A method and device for detecting whether a headset is on ear. Microphone signals from a plurality of microphones are used to derive a plurality of signal feature measures, which are normalized to a common reference scale. The signal feature measures are weighted based upon detected signal conditions in the microphone signals. The normalized and variably weighted signal feature measures are then combined to produce an output indication of whether a headset is on ear.
Claims16
A signal processing device for on ear detection for a headset, the device comprising:
- a plurality of inputs for receiving respective microphone signals from a plurality of microphones;
- and
- a processor configured to derive from the microphone signals a plurality of signal feature measures, the processor further configured to normalise the signal feature measures;
- the processor further configured to variably weight the signal feature measures in response to detected signal conditions in the microphone signals;
- the processor further configured to combine the variably weighted normalized signal feature measures to produce an output indication of whether a headset is on ear.
A method for on ear detection for a headset, the method comprising:
- receiving respective microphone signals from a plurality of microphones;
- deriving from the microphone signals a plurality of signal feature measures;
- normalising the signal feature measures;
- variably weighting the signal feature measures in response to detected signal conditions in the microphone signals;
- and
- combining the variably weighted normalized signal feature measures to produce an output indication of whether a headset is on ear.
A non-transitory computer readable medium for on ear detection for a headset, comprising instructions which, when executed by one or more processors, causes performance of the following:
- receiving respective microphone signals from a plurality of microphones;
- deriving from the microphone signals a plurality of signal feature measures;
- normalising the signal feature measures;
- variably weighting the signal feature measures in response to detected environmental conditions in the microphone signals;
- and
- combining the variably weighted normalized signal feature measures to produce an output indication of whether a headset is on ear.
Dependencies are inferred from the claim text.