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Personalized HRTF rapid modeling acquisition method

An acquisition method and fast technology, applied in the field of virtual auditory display, can solve the problems of high cost, time-consuming and laborious, and long calculation time, and achieve the effects of small storage space, strong fitting ability, and fast reconstruction speed

Pending Publication Date: 2021-06-25
SHANGHAI AVIATION ELECTRIC
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AI Technical Summary

Problems solved by technology

Due to the high cost, time-consuming and labor-intensive method of measuring personalized HRTF through experiments, most of the existing virtual auditory display related technologies use artificial heads instead of non-personalized HRTF databases obtained by real-person measurement, which restricts virtual auditory display. Positioning accuracy of technology
Although the numerical simulation calculation method is more convenient than the experimental measurement, the calculation time is still long, and it is difficult to be widely used in products developed for non-specific users

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  • Personalized HRTF rapid modeling acquisition method

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The HRTF database in the present embodiment takes the HRTF database measured by the CIPIC laboratory of the University of California, Davis as an example. The personalized HRTF database of CIPIC includes 37 samples (including two artificial heads), and records 1250 spatial sampling points HRIR (Head Related Impulse Response, Head Related Impulse Response) of 200 points in length for the left and right ears at the position. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] see figure 1 As shown, the personalized HRTF rapid modeling acquisition method provided in thi...

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Abstract

The invention discloses a personalized HRTF rapid modeling acquisition method, and the method comprises the following steps: S1, performing correlation analysis on a physiological appearance parameter database, and screening out characteristic physiological appearance parameters in combination with physical analysis; S2, performing multiple data dimension reduction on the personalized HRTF database, and extracting a feature matrix corresponding to a sample; S3, establishing, training and fitting a neural network of a relationship between the collected sample feature physiological shape parameters in the personalized HRTF database and the corresponding HRTF feature matrix; S4, inputting feature physiological appearance parameters of the user, predicting an HRTF feature matrix of the user by using the trained neural network, and reconstructing the feature matrix into a complete HRTF database. The method has the advantages that the personalized HRTF corresponding to the user can be rapidly and accurately obtained through a small number of feature physiological shape parameters, and therefore the positioning precision and user experience of the virtual auditory display technology can be improved to a certain degree.

Description

technical field [0001] The present invention relates to the technical field of virtual auditory display, and is a rapid modeling and acquisition method of personalized HRTF, which can use the existing personalized HRTF database to quickly establish the model relationship between individual physiological shape parameters and personalized HRTF. The user's physiological shape parameters quickly generate its corresponding personalized HRTF database. Background technique [0002] Head Related Transfer Function (Head Related Transfer Function, HRTF) is the core technology of virtual auditory display, which describes the transfer function between the sound source and the ears in the free field situation, and contains the key information of the virtual sound source playback. [0003] HRTF is a multivariate function distributed according to spatial position and frequency. In the case of far-field measurement, the distance parameter is often omitted, so HRTF is a cluster of spectrum c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S7/00G06N3/04
CPCH04S7/303H04S7/307H04S2420/01G06N3/045
Inventor 张康马立超陈慧路博
Owner SHANGHAI AVIATION ELECTRIC
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