Adaptive active noise cancellation based on movement

A method, comprising, at a speaker system:

• receiving audio signals from outside the speaker system;
• applying active noise cancellation (ANC) on the audio signals to generate a modified audio signal stream through the speaker, including generating ANC signals by an ANC circuit to interfere with at least part of the audio signals from outside the speaker system in the modified audio signal stream;
• determining of low-frequency energy at the speaker system, the low-frequency energy below a threshold frequency;
• and
• based on the determination of low-frequency energy at the speaker system, performing a corrective action on application of ANC to the audio signals from outside the speaker system,
• wherein performing the corrective action includes reducing an overall ANC gain of the ANC circuit to a minimum value as a ramp function over a time period.

An article of manufacture comprising a non-transitory machine-readable medium, the medium including instructions, the instructions, when loaded and executed by a processor, cause the processor to:

• receive audio signals from outside a speaker system;
• apply active noise cancellation (ANC) on the audio signals to generate a modified audio signal stream through the speaker, including generation of ANC signals by an ANC circuit to interfere with at least part of the audio signals from outside the speaker system in the modified audio signal stream;
• detect low-frequency energy at the speaker system, the low-frequency energy below a threshold frequency;
• and
• based on the detection of low-frequency energy at the speaker system, perform a corrective action on application of ANC to the audio signals from outside the speaker system,
• wherein performing the corrective action includes reducing an overall ANC gain of the ANC circuit to a minimum value as a ramp function over a time period.