Method for describing composition of audio signals

Method for describing composition of audio signals

  • CN 1,717,955 B
  • Filed: 11/28/2003
  • Issued: 10/23/2013
  • Est. Priority Date: 12/02/2002
  • Status: Active Grant
First Claim
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1. one kind is used for the MPEG-4 coding audio signal is carried out sterically defined method, for corresponding with screen plane respectively x position and y position, and the related 2D positional information of described audio signal tool, described method comprises:

  • For x position and the y position corresponding with described screen plane, described 2D positional information is transformed to the 3D coordinate system, wherein create the depth coordinate vertical with the 2D screen plane, the elevation information of the described y position of described screen plane is mapped to the depth coordinate of described 3D coordinate system, so that with the audio frequency motion to the degree of depth of the Motion mapping of the object of y yardstick in the 2D coordinate system;

    Come space orientation sound according to the 3D positional information that obtains.

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