Systems and methods for modifying room characteristics for spatial audio rendering over headphones

A system for modifying room or speaker characteristics for spatial audio rendering over headphones including a processor performing the steps of:

• generating a first BRIR based on a matching operation applied to extracted biometric properties;
• receiving the first BRIR corresponding to a first loudspeaker in a first room;
• segmenting the first BRIR into at least two regions by determining at least two regions of four regions that include a direct region, an early reflections region, a head and torso influenced region, and a late reverberation region for the first BRIR;
• applying deconvolution to the direct region of the first BRIR to remove first loudspeaker effects from the direct region and create a deconvolved direct region of the first BRIR, wherein the first loudspeaker effects comprise a measured loudspeaker impulse response of a first loudspeaker;
• convolving a target loudspeaker response with the deconvolved direct region of the first BRIR to at least partially generate at least one modified region, wherein the at least one modified region includes the deconvolved direct region of the first BRIR corresponding to different loudspeaker acoustic properties from the first loudspeaker, wherein the at least one modified region is further at least partially generated by a modification operation comprising adapting different perceived loudspeaker acoustic properties from the first BRIR;
• and
• combining the at least one modified region and the unmodified regions of the first BRIR to form a modified BRIR, wherein the at least one modified region corresponds to changed sound attributes for a loudspeaker-room-listener interrelationship.

A method for generating modified spatial audio transfer functions comprising:

• generating a first spatial audio transfer function customized for an individual by accessing a spatial audio transfer function indexed according to extracted image based properties, wherein the generating is based on a matching operation applied to the extracted image based properties;
• segmenting the first spatial audio transfer function into at least two regions by determining at least two regions of four regions that include a direct region, an early reflections region, a head and torso influenced region, and a late reverberation region for the first spatial audio transfer function;
• and
• performing a modification operation on at least one of the at least two regions to at least partially generate at least one modified region, wherein the modification operation comprises adapting different perceived loudspeaker acoustic properties or room acoustic properties from the first spatial audio transfer function and performing deconvolution to the direct region of the first spatial audio transfer function to remove first loudspeaker effects from the direct region and create a deconvolved direct region of the first spatial audio transfer function, wherein the first loudspeaker effects comprise a measured loudspeaker impulse response of a first loudspeaker;
• convolving a target loudspeaker response with the deconvolved direct region of the first spatial audio transfer function, wherein the at least one modified region is further at least partially generated by a modification operation comprising adapting different perceived loudspeaker acoustic properties from the first loudspeaker from the first spatial audio transfer function;
• and
• combining the at least one modified region and any unmodified regions of the first spatial audio transfer function of the at least two regions to form a modified spatial audio transfer function that provides virtualization of the target loudspeaker having different acoustic properties than the loudspeaker used as a basis for the first spatial audio transfer function.