: Adjustment of acoustic properties based on proximity detection
Issue Date : 2013.5.28.
One or more acoustic
transducers of a device may be adjusted based on automatic detection of device
proximity to the user. In a mobile telephone, when the user is using the
receiver and holding the telephone against his/her ear, if the telephone detects
that the user has moved the telephone further from his/her ear, the telephone
will raise the receiver volume. Similarly, if the user is using the speaker, the
telephone will adjust the speaker volume as user distance from the telephone
changes. In another embodiment the telephone may fade between the receiver and
the speaker. Volume is not the only acoustic property that could be adjusted
according to user proximity. Frequency response is another property that could
be adjusted, such as using appropriate electronic filtering, or by turning on
another transducer that is not otherwise being used.