Onboard three-dimensional call virtual auditory processing method

Abstract

The invention provides an onboard three-dimensional call virtual auditory processing method, and aims to provide a virtual auditory processing method that meets the requirements of both quick change in the voice source and great enhancement of voice communication quality. The method of the invention is realized by the following technical scheme: a multi-channel voice input module receives strobe channel voice data according to a strobe state of each channel, and sends the number of strobe channels and stroke channel number information to a virtual azimuth generating module; the virtual azimuth generating module generates a voice moving trajectory and an adjustment trajectory of each channel according to a preset initial virtual channel azimuth of each voice channel and an intelligible optimum azimuth, and sends the corresponding azimuth to the trajectory to a virtual auditory synthesis module based on a head related transfer function (HRTF) according to a time function; and the virtual auditory synthesis module performs convolution for the voice data of each channel and the corresponding HRTF, and generates a multi-channel three-dimensional audio signal to a mix output module for synthesis into a one-way three-dimensional audio signal to be output.

Description

technical field [0001] The invention relates to voice communication technology under an airborne platform, in particular to a virtual auditory processing method for realizing airborne three-dimensional conversation through three-dimensional audio technology. Background technique [0002] In the prior art, the method of airborne information communication generally has two kinds of methods: voice communication and digital communication. Voice communication can enable pilots to communicate with the command center or other pilots; however, voice communication has a very obvious deficiency: the speed of voice communication is relatively slow, so in the same time, the amount of information that voice communication can express is small, and voice communication It is easy to be interfered by the other party's radio, and its reliability is poor; voice communication will more or less affect the pilot's attention, which will affect the pilot's operation and judgment. Digital communica...

AI Technical Summary

Problems solved by technology

Voice communication can enable pilots to communicate with the command center or other pilots; however, voice communication has a very obvious deficiency: the speed of voice communication is relatively slow, so in the same time, the amount of information that voice communication can express is small, and voice communication It is easy to be interfered by the other party's radio, and its reliability is poor; voice communication will more or less affect the pilot's attention, which will affect the pilot's operation and judgment

[0004] First, the voice source recognition is low

When a voice comes suddenly, due to the large number of potential voice channels, the pilot cannot quickly judge the source of the voice. It takes a certain amount of communication before confirming the source of the voice, which reduces the efficiency of the call

[0005] Second, the voice intelligibility is low when talking with multiple people

[0008] Deploying according to the actual direction of the channel or deploying according to a certain single rule can realize voice separation and improve the low recognition of voice sources, but it is not optimal for the improvement of voice intelligibility

In addition, relevant literature research shows that the orientation of the optimal intelligibility of multi-channel voice communication varies with the number of channels, so it is impossible to use a single preset virtual channel orientation to achieve the optimal intelligibility of multi-channel communication

[0009] To sum up, by setting a single virtual orientation method, it is impossible to ensure the identification of the voice source and improve the optimal intelligibility of the voice, which makes the application of virtual auditory technology in multi-channel communication providers have certain limitations.

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