Audio system to determine spatial audio filter based on user-specific acoustic transfer function

An audio system, comprising:

• a headphone including a speaker to generate a sound based on an audio content signal, and a microphone that is facing a surrounding environment of the headphone to capture the sound of the audio content signal reflected as an output signal;
• and
• one or more processors configured to
• determine an acoustic transfer function using at least the audio content signal and the output signal, the acoustic transfer function is based at least part on an acoustic path between the speaker and the microphone, and
• select a spatial audio filter corresponding to a predetermined transfer function matching the acoustic transfer function, wherein the spatial audio filter includes one or more of a head-related transfer function (HRTF) or a headphone equalization (HpEQ) filter of a user.

A non-transitory machine readable medium storing instructions executable by one or more processors of an audio system to cause the audio system to perform a method comprising:

• driving, by one or more processors, a speaker of a headphone with an audio content signal to generate a sound;
• capturing, by a microphone that is on an external surface of the headphone, the sound of the audio content signal reflected as an output signal;
• determining, by the one or more processors, an acoustic transfer function using the audio content signal and the output signal, the acoustic transfer function is based at least part on an acoustic path between the speaker and the microphone;
• and
• selecting, by the one or more processors, a spatial audio filter corresponding to a predetermined transfer function matching the acoustic transfer function, wherein the spatial audio filter includes one or more of a head-related transfer function (HRTF) or a headphone equalization (HpEQ) filter of a user.