Sound augmentation system transfer function calibration

A method of transfer function calibration for a sound augmentation system in a vehicle, the method comprising:

• producing, by a sound augmentation generator of the sound augmentation system, an augmented audio output to drive at least one audio output in the vehicle based on a transfer function;
• determining a current performance level of the sound augmentation system based on a feedback of the augmented audio output and at least one audio input;
• triggering a transfer function update prompt based on a difference between the current performance level and an expected performance level being at a threshold level;
• monitoring for a transfer function calibration request in response to the transfer function update prompt;
• and
• in response to receiving the transfer function calibration request, driving a calibration sequence on the at least one audio output while monitoring the at least one audio input to determine an updated transfer function.

A vehicle, comprising:

• at least one audio output to a speaker;
• at least one audio input from a microphone;
• a sound augmentation system comprising a sound augmentation generator coupled to the at least one audio output, the sound augmentation generator produces an augmented audio output to drive the at least one audio output based on a transfer function;
• a sound augmentation system health monitor coupled to the at least one audio input and a feedback of the augmented audio output, the sound augmentation system health monitor determines a current performance level of the sound augmentation system based on the at least one audio input and the feedback of the augmented audio output, and triggers a transfer function update prompt based on a difference between the current performance level and an expected performance level being at a threshold level;
• a user interface that outputs the transfer function update prompt and receives a transfer function calibration request in response to the transfer function update prompt;
• a transfer function calibration module coupled to the at least one audio output and the at least one audio input, the transfer function calibration module drives a calibration sequence on the at least one audio output and monitors the at least one audio input to determine an updated transfer function in response to the transfer function calibration request;
• and
• a wireless interface that transmits the updated transfer function to a data collection system.