Systems and methods for on ear detection of headsets

A signal processing device for on ear detection for a headset, the device comprising:

• a first microphone input for receiving a microphone signal from a first microphone, the first microphone being configured to be positioned inside an ear of a user when the user is wearing the headset;
• a second microphone input for receiving a microphone signal from a second microphone, the second microphone being configured to be positioned outside the ear of the user when the user is wearing the headset;
• and
• a processor configured to:
• receive microphone signals from each of the first microphone input and the second microphone input;
• pass the microphone signals through a first filter to remove low frequency components, producing first filtered microphone signals;
• combine the first filtered microphone signals to determine a first on ear status metric;
• pass the microphone signals through a second filter to remove high frequency components, producing second filtered microphone signals;
• combine the second filtered microphone signals to determine a second on ear status metric;
• and
• combine the first on ear status metric with the second on ear status metric to determine the on ear status of the headset.

A method of on ear detection for an earbud, the method comprising:

• receiving microphone signals from each of a first microphone and a second microphone, wherein the first microphone is configured to be positioned inside an ear of a user when the user is wearing the earbud and the second microphone is configured to be positioned outside the ear of the user when the user is wearing the earbud;
• passing the microphone signals through a first filter to remove low frequency components, producing first filtered microphone signals;
• combining the first filtered microphone signals to determine a first on ear status value;
• passing the microphone signals through a second filter to remove high frequency components, producing second filtered microphone signals;
• combining the second filtered microphone signals to determine a second on ear status value;
• and
• combining the first on ear status value with the second on ear status value to determine the on ear status of the headset.