| 摘要 |
A user of a communications device is given the ability to conveniently control the quality of the sound he is hearing during a call. An acoustic transducer interface circuit of the device has volume settings that are set by the user actuating a volume adjustment button or switch. In addition, the device has one or more intelligibility boost settings that are also selected by actuating the volume adjust button. Once the device has been signaled into the highest volume setting in response to actuation of the button in a given direction, and the next actuation of the button is also in the given direction, a downlink voice signal processor of the device responds to the next actuation by changing its audio frequency response to boost intelligibility of the far end user's speech being heard by the near end user. Other embodiments are also described and claimed.
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