Patent ID: 9066173
Filing Date: 2015-06-23
Classification: H04R,H04S

Abstract:
1. A method for producing an optimum sound field of loudspeakers comprising the steps of: Step one: enclosing a surface of a human head with a first closed geometric shape; Step two: enclosing the first closed geometric shape with at least one second closed geometric shape, outside the human head while the first closed geometric shape and the second closed geometric shape are similar to each other; Step three: setting up a plurality of reference points on the first closed geometric shape and on the second closed geometric shape respectively; the reference point on the first closed geometric shape is corresponding to the reference point on the second closed geometric shape Step four: using signal strength of the reference point on the second closed geometric shape and a gradient of the corresponding reference points on the first and the second closed geometric shapes to form a transfer function from a virtual loudspeaker to each point of a sound field and a transfer function from a real loudspeaker to each point of the sound field, respectively; Step five: creating a virtual sound field and a real sound field according to the transfer function of the virtual loudspeaker and the transfer function of the real loudspeaker respectively; and Step six: obtaining an optimum signal of the real loudspeaker by minimizing an error between the virtual sound field and the real sound field with a boundary condition.