This research suggests the direction of the sound in the horizontal (Horizontal).Using the Transfer function spectrum in about his head (Head - Related Transfer Function or HRTF), which will allow us to distinguish direction. And then I find the correlation (Correlation) is a measure of sound waves of the same waves.At the same time, and then bring the results are positive, as well as all together reduce the complexity of finding the correlation reduces sound waves by using the filter frequency Band pass-filter is to allow only the Frequency Range to go through.To add a more accurate calculation.
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