Active noise reduction control for non-occluding wearable audio devices

A vehicle audio system comprising:

• at least one electro-acoustic transducer;
• at least one microphone;
• and
• an audio control system coupled with the at least one electro-acoustic transducer and the at least one microphone, the control system programmed to:
• adjust a noise control (NC) setting for audio output to the at least one electro-acoustic transducer in response to detecting use of a non-occluding wearable audio device in the vehicle, and
• communicate with an audio control system in the non-occluding wearable audio device, wherein the control system in the non-occluding wearable audio device and the audio control system in the vehicle are configured to coordinate audio output to reduce detectable noise by a user in the vehicle,
• wherein, in a first frequency band, the audio control system in the vehicle is engaged to reduce the detectable noise;
• and
• wherein the audio control system includes an NC circuit that deploys a set of filters to audio signal inputs to reduce noise detected by the microphone, wherein the NC circuit deploys distinct filters to provide at least one of:
• i) seat-specific NC settings for the audio output, ii) user-specific NC settings for the audio output, iii) user-adjustable NC settings for the audio output, iv) differential user-adjustable road noise cancelation (RNC) settings for the audio output in conjunction with an active noise reduction (ANR) setting on the non-occluding wearable audio device, or v) adaptable NC settings and/or audio output settings based on detecting use of the non-occluding wearable audio device in the vehicle.

A method of controlling a noise cancelation (NC) setting at a vehicle audio system and an active noise reduction (ANR) setting at a non-occluding wearable audio device, the method comprising:

• adjusting at least one of the NC setting at the vehicle audio system or the ANR setting at the non-occluding wearable audio device in response to detecting the presence of the non-occluding wearable audio device in the vehicle, wherein adjusting the ANR setting includes either:
• a) applying a narrowband feedforward or feedback control to a noise signal at the non-occluding wearable audio device based on an input from a reference sensor, wherein the narrowband noise includes at least one of engine noise or motor harmonics or
• b) applying a broadband feedforward control to a noise signal at the non-occluding wearable audio device based on an input from a reference sensor in the vehicle,
• wherein at least one microphone at the non-occluding wearable audio device provides an acoustic input to a model of the vehicle for improving NC settings.