Sound field processing method and apparatus in virtual reality device

Abstract

The invention discloses a sound field processing method and apparatus in a virtual reality device. The processing method comprises the following steps: predetermining a preset number of binaural signals, wherein the preset number of binaural signals comprises sampling binaural signals and oversampling binaural signals; fitting the sampling binaural signals to acquire the oversampling binaural signals; determining a first oversampling binaural signal and a second oversampling binaural signal closest to a horizontal angle according to the rotation horizontal angle of a user head; and interpolating the first oversampling binaural signal and the second oversampling binaural signal to acquire a current binaural signal corresponding to the horizontal angle, and broadcasting the current binaural signal to the user. By adopting the sound field processing method and apparatus in the virtual reality device provided by the invention, the data size to be processed can be reduced on the premise of guaranteeing better sound effect of the binaural signals, so as to improve the processing efficiency of the binaural signals.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a sound field processing method and device in a virtual reality device. Background technique [0002] When a virtual reality head-mounted display (HMD) is used to present content to a user, the audio content is often played to the user through stereo headphones. [0003] At present, one method of generating a virtual reality sound field is to use head recordings to directly obtain binaural signals. Specifically, binaural signals in N directions can be obtained through head recording in N directions. The binaural signals in other directions can then be interpolated to obtain binaural signals at any rotation angle of the head. Another way is to use HRTF (HeadRelated Transfer Function, head-related transfer function) or BRIR (Binaural Room Impulse Response, binaural house impulse response) filter to filter the audio object, so that binaural signals can be calculated. Fi...

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Problems solved by technology

But the disadvantage is that if the direction of the obtained binaural signal is less, that is, when N is small, the accuracy of the interpolation is low, which makes the sound effect of the interpolated binaural signal poor

Conversely, if in order to ensure the interpolation accuracy, it is necessary to obtain binaural signals in more directions, then the amount of data to be processed is too large, and the efficiency of interpolation to obtain binaural signals cannot be guaranteed.

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