Background noise reduction in an audio device
AssigneeMotorola Mobility LLC
InventorSnehitha Singaraju
Life of this patent
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Abstract
A method and apparatus are for determining one or more background noise characteristics, determining one or more incoming audio characteristics; and generating a combined audio signal comprising an active noise cancellation (ANC) component and a modified incoming audio (MIA) component. The ANC component is determined based on at least one of the one or more incoming audio characteristics and the background noise characteristics. Each of a limit of the ANC component and a limit of the MIA component is dynamically controlled to be less than or equal to a system limit, wherein a limit of the combined signal is approximately at the system limit.
Claims14
A method for background noise reduction, comprising:
- determining one or more background noise characteristics;
- determining one or more incoming audio characteristics;
- and
- generating a combined audio signal comprising an active noise cancellation (ANC) component that is determined based on at least one of the one or more background noise characteristics and a modified incoming audio (MIA) component that is determined based on at least one of the one or more background noise characteristics, wherein each of a limit of the ANC component and a limit of the MIA component is dynamically controlled to be less than or equal to a system limit, wherein a limit of the combined signal is approximately at the system limit.
An apparatus, comprising:
- a microphone that senses background noise;
- an audio source that provides incoming audio;
- a speaker that generates audio from a combined audio signal;
- a memory that stores program instructions;
- and
- a processor that executes the program instructions to
- determine one or more background noise characteristics,
- determine one or more incoming audio characteristics, and
- generate the combined audio signal comprising an active noise cancellation (ANC) component that is determined based on at least one of the one or more background noise characteristics and a modified incoming audio (MIA) component that is determined based on at least one of the one or more background noise characteristics, wherein each of a limit of the ANC component and a limit of the MIA component is dynamically controlled to be less than or equal to a system limit, wherein a limit of the combined signal is approximately at the system limit.
A non-transitory media comprising programmed instructions that when executed by a processor performs:
- determining one or more background noise characteristics;
- determining one or more incoming audio characteristics;
- and
- generating a combined audio signal comprising an active noise cancellation (ANC) component that is determined based on at least one of the one or more background noise characteristics and a modified incoming audio (MIA) component that is determined based on at least one of the one or more background noise characteristics, wherein each of a limit of the ANC component and a limit of the MIA component is dynamically controlled to be less than or equal to a system limit, wherein a limit of the combined signal is approximately at the system limit.
Dependencies are inferred from the claim text.