Crosstalk clearing system, method for keeping tone quality and its parameter design method

A technology of crosstalk elimination and parameter design, applied in the direction of stereo circuit arrangement, speaker distribution signal, etc., can solve problems such as distortion, sound quality change of sound field, high-frequency noise, etc.

Inactive Publication Date: 2007-10-10
SUNPLUS TECH CO LTD
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Problems solved by technology

[0004] The object of the present invention is to provide a crosstalk cancellation system, method and parameter design method capable of maintaining sound quality, which are used in low frequency bands and high frequency bands, Reducing the problem of crosstalk is also amplified, thereby solving the problem of high-frequency noise or distortion
[0005] Another object of the present invention is to provide a crosstalk cancellation system capable of maintaining sound quality and its parameter design method, whic

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  • Crosstalk clearing system, method for keeping tone quality and its parameter design method
  • Crosstalk clearing system, method for keeping tone quality and its parameter design method
  • Crosstalk clearing system, method for keeping tone quality and its parameter design method

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[0042] The crosstalk cancellation system plays a very important role in reproducing three-dimensional sound effects with loudspeakers. FIG. 1 is a schematic diagram of reproducing three-dimensional spatial sound effects by standard two-channel speakers. where X 1 and x 2 For the input signal, generally the left channel audio source X 1 and right channel source X 2 . h 11 and H 22 is the same-side head transfer function (head related transfer function, HRTF), H 12 and H 21 is the heterolateral head transfer function (HRTF). input signal X 1 and x 2 Via the heterolateral head transfer function (HRTF) H 21 and H 12 The generated output is the crosstalk to be eliminated in the crosstalk cancellation system of the present invention.

[0043] In order to eliminate crosstalk to improve the sound field reproduction of three-dimensional sound effects, the input signal must first pass through a crosstalk cancellation system. FIG. 2 is a schematic diagram of the operation o...

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Abstract

The invention is used to remove the cross talk generated from a two-channel sound source. The method comprises: providing a sound inputting device used for inputting a two channel sound source; setting a transfer function relation between the cross talk removing system and the user's head to get an outputted transfer pulse response; setting the antarafacial output transfer function pulse of the outputted transfer pulse response level off to zero; setting the homolateral output transfer pulse response of the outputted transfer pulse response to be delayed than the homolateral head transfer pulse response of the head transfer function; after a reversed calculation, getting the parameter of the cross talk removing system; using the parameter to make filter to get the output signals.

Description

technical field [0001] The invention relates to a crosstalk elimination technology, in particular to a crosstalk elimination system, method and parameter design method capable of maintaining sound quality. Background technique [0002] When using speakers to reproduce three-dimensional sound effects, cross-talk (cross-talk) cancellation system plays a very important role. The main goal of the known crosstalk cancellation system is to compensate the same-side head transfer function (Head-Related Transfer Function, also known as head-related transfer function) and eliminate crosstalk and equalize (equalize) the same-side head transfer function . However, in order to compensate for the poor low-frequency and high-frequency response of the same-side head transfer function, the crosstalk cancellation system needs to have a large gain, so that the crosstalk is also amplified in the low-frequency and high-frequency bands. , so known crosstalk cancellation systems are prone to hig...

Claims

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Application Information

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IPC IPC(8): H04R3/12H04R5/04
Inventor 白明宪柳又中欧昆应施畊宇李志中
Owner SUNPLUS TECH CO LTD
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