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US 8,391,501 B2Granted
Method and apparatus for mixing priority and non-priority audio signals
AssigneeMotorola Mobility LLC
InventorsCharbel Khawand, Mikhail U. Yagunov
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Abstract
An audio processor (202) receives a non-priority audio signal (302) and a priority audio signal (304). The priority audio signal occupies a frequency band (408). The audio processor filters (320) the non-priority audio signal by suppressing frequency content in the same frequency region occupied by the priority signal, creating a filtered non-priority signal (412). The filtered non-priority signal and the priority signal are combined (328) and played over an audio transducer (110).
Claims16
A method of mixing audio signals at an audio processor, comprising:
- receiving at the audio processor a priority audio signal occupying at least one frequency band;
- receiving at the audio processor at least one non-priority audio signal having a bandwidth greater than the at least one frequency band;
- stop-band filtering the at least one non-priority audio signal to provide at least one filtered non-priority audio signal, wherein the at least one frequency band is suppressed in the non-priority audio signal by the stop-band filtering and frequencies outside the at least one frequency band are not suppressed by the stop-band filtering;
- and
- combining the priority audio signal and the at least one filtered non-priority audio signal to provide an output signal.
2 more elements
A mobile communication device, comprising:
- an audio processor having a plurality of audio input channels;
- a speaker coupled to the audio processor;
- at least one non-priority audio signal source operatively coupled to the audio processor for providing at least one non-priority audio signal;
- and
- a priority audio signal source operatively coupled to the audio processor for providing a priority audio signal, the priority audio signal occupying at least one frequency band that is less than a bandwidth of the at least one non-priority audio signal;
- wherein the audio processor stop-band filters the at least one non-priority audio signal to provide at least one filtered non-priority audio signal, wherein the at least one frequency band is suppressed in the non-priority audio signal by the stop-band filtering and frequencies outside the at least one frequency band are not suppressed by the stop-band filtering;
- and
- wherein the audio processor combines the at least one filtered non-priority audio signal and the priority audio signal to provide an output signal to the speaker.
5 more elements
Dependencies are inferred from the claim text.