Virtual surround sound processing method and device

A processing method and surround sound technology, applied in the multimedia field, can solve the problem that the old model cannot be applied to the new position, and achieve the effect of improving the user experience

Active Publication Date: 2019-12-24
HISENSE VISUAL TECH CO LTD
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Problems solved by technology

When the user's position changes, the transmission channel will change, and the old model cannot be applied to the new position, resulting in a great change in the user's perception of surround sound

Method used

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  • Virtual surround sound processing method and device
  • Virtual surround sound processing method and device
  • Virtual surround sound processing method and device

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] figure 1 It is a schematic diagram of the audio signal processing method of the present invention, figure 2 It is a schematic diagram of shifting and windowing operations. The audio processing method of the present invention can be specifically applied to multimedia equipment such as televisions and projection equipment, such as figure 1...

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Abstract

The embodiment of the invention provides a virtual surround sound processing method and apparatus. The virtual surround sound processing method provided by the invention comprises the following steps:determining a first difference signal and a second difference signal according to a spectrum signal of a left channel and the spectrum signal of a right channel; separately performing phase shift onthe first difference signal and the second difference signal to obtain a first target difference signal and a second target difference signal; generating a processed left channel signal and a processed right channel signal according to the spectrum signal of the left channel, the spectrum signal of the right channel, the first target difference signal and the second target difference signal; and outputting the processed left channel signal and the processed right channel signal. By adoption of the virtual surround sound processing method and apparatus provided by the embodiment of the invention, the vivid feeling of the virtual surround sound effect technology can be achieved, and the virtual surround sound effect is irrelevant to the location of the user, which can improve the user experience.

Description

technical field [0001] The embodiment of the present invention relates to multimedia technology, and in particular to a virtual surround sound processing method and device. Background technique [0002] Virtual surround sound technology is based on two-channel stereo, without adding channels and speakers, and broadcasting the sound field signal after processing, so that the listener feels that the sound comes from multiple directions and generates a simulated stereo field. Virtual surround sound technology has become an indispensable technology in TV sets. Its function is to expand the sound field of the TV so that the sound of the TV sounds inclusive. At present, the virtual surround sound function is mainly realized through a Head Related Transfer Function (Head Related Transfer Function, HRTF for short) algorithm. [0003] The HRTF algorithm can be decomposed into three parts, including Interaural Time Difference, Interaural Level Difference and Spectral Cues. Such as ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S3/00H04S5/00
CPCH04S3/00H04S5/005
Inventor 邢文峰
Owner HISENSE VISUAL TECH CO LTD
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