| 摘要 |
An interface cable assembly, which enables the user of either an iPhone® or Android® smartphone to record both incoming and outgoing telephone conversations on a standard dual channel (stereo) audio recorder in either WMA or MP3 format, includes one four-conductor plug that engages the audio input/output jack of the smartphone, one three-conductor plug that engages the dual-channel input jack of an audio recorder, and one four-conductor jack that engages the plug of a standard earphone and microphone assembly. In addition, the cable assembly includes resistors and capacitors which provide an impedance match between the input/output circuitry and the audio recorder input circuitry. In order to clearly distinguish between the participants in a recorded telephone conversation, outgoing voice signals are recorded on one channel of the audio recorder, while incoming voice signals are recorded on the other channel. |
