Systems and methods for a personalized audio system

A method of calibrating sound for a listener, the method comprising:

• receiving an input audio signal, an audio signal source location, a receiver location, and a head position of a user;
• determining an HRIR for the user based on an array of time aligned HRIR corresponding to locations around the user, the audio signal source location, the receiver location, and the head position;
• dividing the input audio signal into a high frequency band and a low frequency band;
• applying delay and equalizing to the low frequency band to produce a filtered low frequency output;
• convolving the high frequency band with the HRIR to produce an HRIR convolved high frequency output;
• dividing the HRIR convolved high frequency output into a left output and a right output;
• applying an arrival time delay to each of the left output and the right output separately;
• applying a pre-equalizing to each of the left output and the right output separately;
• recombining each of the left output and the right output with the filtered low frequency output;
• applying a post-equalizing to each of the left output and the right output separately;
• applying a near-field correction to each of the left output and the right output separately based on a near-field model using a using a low shelf filter and a high shelf filter;
• filtering the HRIR convolved high frequency output with interaural crosstalk cancellation filters to produce a crosstalk filtered high frequency output;
• combining the filtered low frequency output and the crosstalk filtered high frequency output into combined filtered signals;
• and
• producing an audio output based on the combined filtered signals;
• wherein the HRIR is an impulse response of a head related transfer function (HRTF).

A system comprising:

• a headrest having a left speaker and a right speaker, the headrest configured to engage a head of a user;
• a sensor tracking a head position of the user;
• an audio signal source;
• an array of time aligned head related impulse responses (HRIR) corresponding to locations around the user;
• and
• a controller in electronic communication with the sensor and the audio signal source with computer readable instructions stored on non-transitory memory that when executed cause the controller to:
• receive an input audio signal, an audio signal source location, a receiver location, and the head position;
• determine HRIR for the user based on the array of time aligned HRIR corresponding to locations around the user, the audio signal source location, the receiver location, and the head position;
• divide the input audio signal into a high frequency band and a low frequency band;
• apply delay and equalizing to the low frequency band to produce a filtered low frequency output;
• convolve the high frequency band with the HRIR to produce an HRIR convolved high frequency output;
• divide the HRIR convolved high frequency output into a left output and a right output;
• apply an arrival time delay to each of the left output and the right output separately;
• recombine each of the left output and the right output with the filtered low frequency output;
• apply a post-equalizing to each of the left output and the right output separately;
• apply a near-field correction to each of the left output and the right output separately based on a near-field model using a low shelf filter and a high shelf filter;
• filter the HRIR convolved high frequency output with interaural crosstalk cancellation filters to produce a crosstalk filtered high frequency output;
• combine the filtered low frequency output and the crosstalk filtered high frequency output into combined filtered signals;
• and
• produce an audio output based on the combined filtered signals;
• wherein the HRIR is an impulse response of a head related transfer function (HRTF).