Abstract: A portable electronic accessory is adapted to initiate an operational mode change in a portable electronic accessory responsive to a user-initiated instruction received along a standard power line. The portable electronic accessory includes a rechargeable battery, electrical leads adapted to couple with a charging source to charge the rechargeable battery, and a polarity detection circuit configured to detect a power polarity switch of the electrical leads when the portable electronic accessory is coupled to the charging source. The portable electronic accessory further includes a controller that initiates a device mode change responsive to the power polarity switch detected by the polarity detection circuit.

Abstract: A portable electronic accessory is adapted to initiate an operational mode change in a portable electronic accessory responsive to a user-initiated instruction received along a standard power line. The portable electronic accessory includes a rechargeable battery, electrical leads adapted to couple with a charging source to charge the rechargeable battery, and a polarity detection circuit configured to detect a power polarity switch of the electrical leads when the portable electronic accessory is coupled to the charging source. The portable electronic accessory further includes a controller that initiates a device mode change responsive to the power polarity switch detected by the polarity detection circuit.

Abstract: A method and apparatus are provided that are configured to initiate a sound capture event within an apparatus and to receive at least two audio signals during the sound capture event. The at least two audio signals are provided by at least two microphones associated with the apparatus. The method and apparatus are also configured to determine at least one microphone operational parameter based on the received at least two audio signals; and to control the sound capture event such that at least one of the at least two audio signals is processed based on the at least one microphone operational parameter.

Abstract: A method comprising: initiating a sound capture event within an apparatus; receiving at least two audio signals during the sound capture event, wherein the at least two audio signals are provided by at least two microphones associated with the apparatus; determining at least one microphone operational parameter based on the received at least two audio signals; and controlling the sound capture event such that at least one of the at least two audio signals is processed based on the at least one microphone operational parameter.