Patent ID: 6181800
Filing Date: 2001-01-30
Classification: H04S

Abstract:
A system comprising:a control unit comprising a storage device which stores a first head related transfer function, wherein said first head related transfer function comprises a set of parameters;speakers coupled to the control unit, wherein a first speaker and a second speaker are positioned at first and second positions, respectively;an input device coupled to said control unit;wherein said control unit is configured (a) to generate first audio signals as a function of the parameters of said first head related transfer function, (b) to supply said first audio signals to said first and second speakers;wherein said first and second speakers generate sound in response to said first and second speakers receiving said first audio signals;wherein said control unit generates said first audio signals such that the sound generated in response to said first and second speakers receiving said first audio signals is desired to appear to originate at an expected perceived position;wherein said input device is configured to receive user input information relating to an actual perceived position, wherein the user input information is input to the input device in response to the first and second speakers generating sound;wherein said control unit is further configured (c) to compute a positional error, wherein said positional error is the difference between said expected perceived position and said actual perceived position, and (d) to adjust the parameters of said first head related transfer function using said positional error.