Electrical audio signal processing systems and devices – Including amplitude or volume control
Reexamination Certificate
2004-05-28
2009-08-11
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Including amplitude or volume control
C381S057000, C700S094000, C455S232100
Reexamination Certificate
active
07574010
ABSTRACT:
Disclosed is a system and method of adjusting an audio signal for a communication device. The method comprises: identifying a characteristic associated with the signal and identifying its quality threshold; identifying a first set of adjustment parameters for the signal when the threshold is exceeded; and identifying a second set of adjustment parameters when it is not exceeded. Also, the device: monitors for a current setting value for the characteristic; and detects whether the current setting value is above or below the quality threshold. If the value is above, then the device produces a first output signal value utilizing a DSP, a processing filter defined in the DSP, values of the first set of adjustment parameters and the signal value. If the value is below, the device produces a second output signal value utilizing the DSP, the filter, values of the second set of adjustment parameters and the signal value.
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Forrester Christopher
Hawker Larry
Nguyen Bao
Chin Vivian
McCarthy Tétrault LLP
Research in Motion Limited
Tran Con P
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