Three-dimensional head-related impulse response data compressing method based on canonical multi-decomposition

Abstract

The embodiment of the invention provides a three-dimensional head-related impulse response data compressing method based on canonical multi-decomposition. The method comprises the steps that a processor performs canonical decomposition on a three-dimensional head-related impulse response data set to obtain three two-dimensional matrixes; the processor initializes the three two-dimensional matrixes; the processor iterates and updates the three initialized two-dimensional matrixes to obtain coefficient matrixes corresponding to the three two-dimensional matrixes; the processor calculates the reconstruction approximation degree of the three iterated two-dimensional matrixes; the processor judges whether an absolute value of difference between the two reconstruction approximation degrees, obtained by two adjacent iterations, of the three two-dimensional matrixes is smaller than 10<-4>; if so, the processor stops iteration and stores the three two-dimensional matrixes in a local cache, and otherwise, the processor returns to the third step until the iteration is completed. According to the method provided by the embodiment of the invention, the problem that an HRFT (Head Related Transfer Function) database is high in storage consumption is solved, and the power consumption and the cost of a chip used in practical application are reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of computer science, in particular to a method for compressing head-related impulse response three-dimensional data based on canonical multivariate decomposition. Background technique [0002] Human hearing can not only perceive the pitch, intensity, and color of sound, but also distinguish the direction and distance of the sound source. In order to enable audiences who are not at a certain scene to obtain a "sense of presence" similar to the scene, people invented three-dimensional audio technology. Three-dimensional audio technology can reproduce the sound information of the original sound field, so that the listener can have an "immersive" listening experience. Three-dimensional audio can be realized through binaural acoustic technology, that is, head-related transfer function (Head Related Transfer function, hereinafter referred to as: HRTF) is used to filter the single-channel sound sou...

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Problems solved by technology

[0004] The embodiment of the present invention provides a head-related impulse response three-dimensional data compression method based on canonical multivariate decomposition to overcome the very large stor

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