Synchronization of instability mitigation in audio devices

An Active Noise Reduction (ANR) audio system comprising:

• a first headphone comprising:
• a first controller arranged to:
• detect an audio instability condition in the first headphone and generate one or more control signals to adjust one or more ANR parameters of the first headphone, wherein the one or more ANR parameters are adjusted to change the first headphone from a first ANR state to a second ANR state to mitigate the audio instability condition and wherein the instability condition is related to an audio feedback between a first microphone and a first speaker of the first headphone;
• and
• synchronize the one or more ANR parameters of the first headphone with the one or more ANR parameters of a second headphone;
• the second headphone comprising:
• a second controller arranged to:
• detect an audio instability condition in the second headphone and generate one or more control signals to adjust one or more ANR parameters of the second headphone, wherein the one or more ANR parameters are adjusted to change the second headphone from a first ANR state to a second ANR state to mitigate the audio instability condition of the second headphone and wherein the audio instability condition is related to an audio feedback;
• and
• synchronize the one or more ANR parameters of the second headphone with the one or more ANR parameters of a first headphone.

A computer program product comprising a set of non-transitory computer readable instructions stored on a memory and executable by a processor to perform a method for controlling an Active Noise Reduction (ANR) audio system, the set of non-transitory computer readable instructions arranged to:

• detect an audio instability condition in a first headphone, wherein the audio instability condition is related to an audio feedback between a first microphone and a first speaker of the first headphone;
• generate one or more control signals to adjust one or more ANR parameters of the first headphone using a first controller, wherein the one or more ANR parameters are adjusted to change the first headphone from a first ANR state to a second ANR state to mitigate the audio instability condition;
• and
• synchronize the one or more ANR parameters of the first headphone with one or more parameters of a second headphone.