A 3D Data Compression Method of Head-related Impulse Response Based on Canonical Multivariate Decomposition

Abstract

An embodiment of the present invention provides a head-related impulse response three-dimensional data compression method based on canonical multivariate decomposition. The method of the present invention includes: the processor adopts canonical decomposition of the head-related impulse response three-dimensional data set to obtain three two-dimensional matrices; the processor initializes the three two-dimensional matrices; the processor iteratively updates the initialized Three two-dimensional matrices to obtain coefficient matrices corresponding to the three two-dimensional matrices; the processor calculates the reconstruction approximation of the three two-dimensional matrices after the iteration; the processor judges that two adjacent iterations Whether the absolute value of the difference between the reconstruction approximations of the two described three two-dimensional matrices obtained is less than 10-4, if so, then the iteration ends, and the three two-dimensional matrices are stored in the local cache; if not , return to the third step until the iteration is complete. The embodiment of the present invention solves the problem that the HRTF database consumes a large amount of storage, and reduces the power consumption and cost of chips used in practical applications.

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 storage space reduction of the HRTF database in the prior art, solve the problem of large storage consumption of the HRTF database, and reduce practical applications. Power consumption and cost of chips used in

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