| 摘要 |
An earplug to provide sounds to a user's ear includes a housing, a speaker in the housing, a reference location or direction indicator associated with the housing to identify a preferential orientation of the housing in a user's ear, and an accelerometer configured to provide an output signal to distinguish and/or to identify in which ear respective earplugs are located. A method to distinguish and/or to identify in which ear respective earplugs are located includes orienting the earplugs in respective ears based on a reference, and using accelerometers to provide output signals distinguishing the left and right positioning of the respective earplugs. |
