ELECTRO-ACOUSTIC TRANSDUCER TUNING AND DATA STORAGE

摘要

An electro-acoustic transducer or a device into which an electro-acoustic transducer is incorporated has at least two audio signal conductors through which the electro-acoustic transducer or device may be coupled to another device to convey analog audio signals representing sounds at a time when the other device places a relatively low DC bias voltage across the at least two audio signal conductors, and to be operated as a digital serial bus to exchange pieces of digitally-encoded data concerning the electro-acoustic transducer at a time when the other device places a relatively high DC bias voltage across the at least two audio signal conductors. A device into which an electro-acoustic transducer is incorporated has at least two audio signal conductors through which the device may be coupled to another device to convey analog audio signals representing sounds at a time when the other device places a relatively low DC bias voltage across the at least two audio signal conductors, and to be operated as either a digital serial bus to exchange pieces of digitally-encoded data concerning the electro-acoustic transducer or as a trigger to cause the electro-acoustic transducer to be bypassed to enable another electro-acoustic transducer to be tested at a time when the other device places a relatively high DC bias voltage across the at least two audio signal conductors. A device into which an electro-acoustic transducer is incorporated is able to be coupled to another device via one or both of a plurality of audio conductors implementing a digital serial bus and a wireless link by which digital data representing sounds either detected by or to be acoustically output by the electro-acoustic transducer may be exchanged to support at least an audio mode of the device. The device is also able to be operated in a test mode in which either analog signals or an altered form of digital data is able to be exchanged via the digital serial bus or the wireless link to enable testing of the electro-acoustic driver in situ as a component of the device and to enable data concerning characteristics of the electro-acoustic transducer derived from an in situ test to be stored for later use by the device to compensate for a characteristic of the electro-acoustic transducer during the audio mode.