Automobile virtual embosom sound system

A technology for audio systems and automobiles, which is applied in the field of audio processing and can solve problems such as lack of stereo sound.

Inactive Publication Date: 2009-07-29
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a car virtual surround sound system, which can solve the problem in the prior art that only the sound source signal is sent to the rear speaker of the car without the feeling of stereo sound

Method used

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  • Automobile virtual embosom sound system
  • Automobile virtual embosom sound system
  • Automobile virtual embosom sound system

Examples

Experimental program
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Embodiment Construction

[0030] 1 is a block diagram of the car virtual surround sound system of the present invention, which is set on a car to receive a two-channel sound source, so as to reproduce the correct virtual audio and video position. The system includes: a spatial synthesizer 110 , a weighting device 120 , a first filter 130 , and a second filter 140 .

[0031] The spatial synthesizer 110 receives a left channel sound source L and a right channel sound source R broadcast by the two-channel sound source, and expands it into a temporary rear left channel sound source RL' and a temporary rear right channel sound source RR '.

[0032] The weighting device 120 receives a left channel sound source L and a right channel sound source R broadcast by the two-channel sound source, and generates a temporary front left channel sound source FL' and a temporary front right channel sound source FR through weighted calculations '.

[0033]That is, the input signal is a left-channel sound source L and a r...

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Abstract

The invention discloses an automobile virtual surrounding sound system, disposed on automobile for receiving a two sound channel sound source. A spatial synthesizer receives the L channel sound source and the R channel sound source of the two channel sound source, and expands them into a temporary after L channel sound source and a temporary after sound source; a weighting apparatus receives the L channel and the R channel sound source of the two channel sound source, and weights them into a temporary before L channel sound source and a temporary before R channel sound source; a first wave filter receives the temporary before L channel and a temporary before R channel sound source, and filters them into a virtual before L channel sound source and a virtual before R channel sound source; a second wave filter receives the temporary after L channel sound source and the temporary after R channel sound source, and filters them into a virtual after L channel sound source and a virtual after R channel sound source. Therefore, the virtual sound and image position is reproduced.

Description

technical field [0001] The invention relates to audio processing technology, in particular to a car virtual surround sound system. Background technique [0002] The current playback content such as CD, MP3 and radio is still a two-channel audio source, but car stereos are equipped with four speakers. Aiming at this phenomenon, in the prior art, the left channel sound source is sent to the front left and rear left speakers, and the right channel sound source is sent to the front right and rear right speakers. This kind of technology will not have the feeling of surround because the content played back and forth is too similar, and it will not fully apply the benefits of multi-channel audio. [0003] The speaker of the car stereo is installed by the door, and the listener does not have a listening position in the middle, so the sound will sound to one side and the elevation angle is lower. At the same time, people in the back seat are often dominated by the sound from the sp...

Claims

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Application Information

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IPC IPC(8): H04S7/00H04R5/02
Inventor白明宪李志中陈晖文
OwnerSUNPLUS TECH CO LTD