Patent ID: 7921016

Claim:
A method for providing a 3D audio work comprising: providing a one-ear HRTF filter which stores a one-ear HRTF therein; providing a related function synthesizer which stores a related function reflecting signal correlation between two opposite ears therein, a method for providing the related function comprising inputting sound signals into HRTF filters of two opposite ears and obtaining output sound signals from the HRTF filters which respectively act as raw signals and target signals, the raw signals entering into and being synthesized by a synthesizer to output sound signals, the output sound signals from the synthesizer comparing with the target signals in a comparator and a related function registered in the synthesizer being accordingly regulated so as to obtain the related function which satisfies a minimum difference between the output sound signals from the synthesizer and the target signals; and inputting sound signals into the one-ear HRTF filter, the sound signals being converted into one-ear output sound signals by the one-ear HRTF filter, the one-ear output signals being received by one ear and sent out and being received and synthesized to output sound signals for another ear by the related function synthesizer.