Detecting an installation position of a wearable electronic device

1. A computer-implemented method for determining an installation position of a wearable audio device, the method comprising:

acquiring, using an accelerometer disposed in a wearable audio device, acceleration data over a period of time;

transmitting the acceleration data to a processing unit;

computing, using the processing unit, an aggregate metric based on the acceleration data, the aggregate metric indicating a net-positive acceleration condition or a net-negative acceleration condition over the period of time; and

determining, based on the net-positive acceleration condition or the net-negative acceleration condition, whether an installation position of the wearable audio device is on a right ear or a left ear of a user.

2. The method of claim 1 , wherein computing the aggregate metric for the acceleration data comprises determining at least one of a mean, median, or mode of the acceleration data over at least a portion of the period of time.

3. The method of claim 1 , wherein:

the acceleration data comprises a set of acceleration values; and

computing the aggregate metric for the acceleration data comprises analyzing a distribution of the set of acceleration values.

4. The method of claim 3 , wherein analyzing the distribution of the set of acceleration values comprises:

defining two or more categories of possible accelerometer outputs; and

identifying a category of the two or more categories for each value of the set of acceleration values.

5. The method of claim 4 , wherein the aggregate metric corresponds to a prominent category of the two or more categories to which a highest number of values of the set of acceleration values are classified.

6. The method of claim 4 , wherein a first category of the two or more categories corresponds to a positive acceleration condition and a second category of the two or more categories corresponds to a negative acceleration condition.

7. The method of claim 4 , wherein classifying each value of the set of acceleration values comprises using at least one of a Bayes classifier or a mixture model.

8. The method of claim 1 , wherein:

the wearable audio device is a first wearable audio device;

the processing unit is a processing unit of a portable electronic device that is communicatively coupled to the first wearable audio device;

the portable electronic device is further communicatively coupled to a second wearable audio device; and

the method further comprises:

determining, by the processing unit, based on the installation position of the first wearable audio device, which of the first wearable audio device or second wearable audio device to transmit an audio signal to.

9. The method of claim 8 , wherein:

the audio signal is a first audio signal; and

the method further comprises:

transmitting the first audio signal to the first wearable audio device; and

transmitting a second audio signal to the second wearable audio device; and

the first and second audio signals are left and right channels for an audio track, respectively.

10. A system comprising:

a first wearable audio device comprising a first sensor configured to acquire first sensor data;

a second wearable audio device comprising a second sensor configured to acquire second sensor data; and

a portable electronic device comprising a processing unit, the portable electronic device communicatively coupled to the first and second wearable audio devices; wherein:

the portable electronic device is configured to determine, by the processing unit, using the first and second sensor data, a first installation position of the first wearable audio device and a second installation position of the second wearable audio device.

11. The system of claim 10 , wherein the portable electronic device is configured to determine the first and second installation positions by computing a first aggregate metric for the first sensor data and a second aggregate metric for the second sensor data.

12. The system of claim 10 , wherein the portable electronic device is further configured to send first audio data to the first wearable audio device and second audio data to the second wearable audio device based on the determined first and second installation positions.

13. The system of claim 10 , wherein the first and second wearable audio devices are wireless earbuds.

14. Apparatus, comprising:

a wearable audio device;

an accelerometer disposed in the wearable audio device; and

a processing unit configured to:

acquire, using the accelerometer, acceleration data over a period of time;

compute an aggregate metric using the acceleration data, the aggregate metric indicating a net-positive acceleration condition or a net-negative acceleration condition over the period of time; and

determine, based on the net-positive acceleration condition or the net-negative acceleration condition, whether the wearable audio device is installed on a left side or a right side of a user.

15. The apparatus of claim 14 , wherein the processing unit is configured to compute the aggregate metric for the acceleration data by determining at least one of a mean, median, or mode of the acceleration data over at least a portion of the period of time.

16. The apparatus of claim 14 , wherein:

the acceleration data comprises a set of acceleration values; and

the processing unit is configured to compute the aggregate metric for the acceleration data by analyzing a distribution of the set of acceleration values.

17. The apparatus of claim 16 , wherein the processing unit is configured to analyze the distribution of the set of acceleration values by:

defining two or more categories of possible accelerometer outputs; and

identifying a category of the two or more categories for each value of the set of acceleration values.

18. The apparatus of claim 14 , wherein:

the accelerometer is a multi-axis accelerometer; and

the acceleration data comprises acceleration data measured along three axes of the multi-axis accelerometer.

19. The apparatus of claim 14 , wherein the processing unit is disposed in a portable electronic device.

20. The apparatus of claim 14 , wherein the processing unit is disposed in the wearable audio device.