System, method, and apparatus for generating and digitally processing a head related audio transfer function
The present invention provides for an apparatus, system, and method for generating a head related audio transfer function in real time. Specifically, the present invention utilizes unique structural components including a tragus structure and an antihelix structure in connection with a microphone in order to communicate the location of a sound in three dimensional space to a user. The invention also utilizes an audio processor to digitally process the head related audio transfer function. The system may also be utilized to pan the directionality of audio sources within a virtual environment at least partially in response to movement of a user.
1. A system of generating an adjusted head related audio transfer function (HRTF) for a user, the system comprising:
at least one channel audio input configured to receive an input signal therein, the input signal containing information corresponding to at least an origin angle to be perceived by the user, a motion translator configured to track motion of the user about at least three axes, an X-axis transverse to the user's head, a Y-axis pointing vertically up from the user's head, and a Z-axis pointing longitudinally away from a user's face,
a panning function configured to translate said origin angle of said input signal into an adjusted origin angle configured in response to motion of the user,
said panning function configured to first determine an angle of rotation about said Y-Axis, and upon determining said angle of rotation about said Y-axis, determining an angle of rotation about said X-axis, and modifying said angle of rotation about said X-axis based on at least said angle of rotation about said Y-axis,
an array configured to associate said adjusted origin angle to a predetermined decibel value,
an interpolation function configured to calculate the predetermined decibel value upon detecting an absence of said adjusted origin angle in the array,
a processor configured to convert said predetermined decibel value into an output signal containing information on positional audio data,
a plurality of FIR filters configured to filter said output signal to create a filtered signal,
a plurality of speakers configured to relay positional audio data to the user.
2. The system of claim 1 wherein the positional audio data comprises said predetermined decibel value of said output signal with respect to the input signal.