Crosstalk eliminator and elimination thereof

A technology of crosstalk cancellation and adder, applied in two-channel systems, stereo systems, electrical components, etc., can solve the problems of audio spectrum distortion and sound quality degradation

Inactive Publication Date: 2006-08-16
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The shortcoming of this crosstalk canceling device and method is that the crosstalk canceling device composed of the filter obtained by Adaptive Equalization or De-convolution method, because filter CS can cause the change of signal spectral characteristic, often can cause the decline of sound quality, cause Distortions on the Audio Spectrum

Method used

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  • Crosstalk eliminator and elimination thereof
  • Crosstalk eliminator and elimination thereof
  • Crosstalk eliminator and elimination thereof

Examples

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Embodiment Construction

[0049] In this embodiment, the crosstalk canceling device such as Figure 4 As shown, it includes a left adder connected to the left speaker; a right adder connected to the right speaker; a delay Z for receiving the left channel sampled signal sequence and outputting it to the left adder -D1 ; Delay Z for receiving the right channel sampled signal sequence and outputting to the right adder -D2 ; Used to receive the left channel sample signal sequence and output to the finite impulse response (FIR) filter H of the right adder 1 (Z); For receiving the right channel sample signal sequence and output to the FIR filter H of the left adder 2 (Z), where:

[0050] Retarder Z -D1 Indicates that the left channel produces D 1 sample period delay, delayer Z -D2 Z -D2 Make the right channel produce D 2 sample period delay, D 1 and D 2 is a natural number whose value can be obtained from experience;

[0051] For crosstalk cancellation, H 1 (Z) and H 2 (Z) should meet the followi...

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Abstract

A cross-voice eliminative installment and the method, use for eliminate the procreant cross-voice by the duplex soundtrack frequency two speakers broadcast that includes 3D information: use the temper unit and filter to do the delay processing and the filter processing respectively for the signal list of the left soundtrack and right soundtrack, get the left soundtrack delayed signal list, the right soundtrack delayed signal list, the left soundtrack filtered signal list and the right soundtrack filtered signal list; the left soundtrack delayed signal list and the right soundtrack filtered signal list add by the adder, then output from the left speaker, simultaneity the left soundtrack filtered signal list and the right soundtrack delayed signal list add by the adder, then output from the right speaker.

Description

technical field [0001] The invention relates to the field of voice processing, in particular to a crosstalk elimination device and method. Background technique [0002] When the two-channel audio containing 3D information is played by two speakers, because the left ear can hear the sound of the right speaker, and the right ear can hear the sound of the left speaker, it will cause great damage to the stereo or 3D effect . [0003] Such as figure 1 As shown, 4 filters are used to represent the signal propagation effect from the loudspeaker to the human ear. A LL is the transfer function representing the propagation effect from the left loudspeaker to the left ear, A LR is the transfer function representing the propagation effect from the left speaker to the right ear, A RR is the transfer function representing the propagation effect from the right loudspeaker to the right ear, A RL is the transfer function representing the effect of propagation from the right speaker to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S1/00H04S7/00
Inventor 林中松王浩王箫程
Owner VIMICRO CORP
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