KR970032269A - Stereo sound processing system - Google Patents

Stereo sound processing system Download PDF

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Publication number
KR970032269A
KR970032269A KR1019970008472A KR19970008472A KR970032269A KR 970032269 A KR970032269 A KR 970032269A KR 1019970008472 A KR1019970008472 A KR 1019970008472A KR 19970008472 A KR19970008472 A KR 19970008472A KR 970032269 A KR970032269 A KR 970032269A
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South Korea
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signal
sound
processing system
matrix
spatial
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KR1019970008472A
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Korean (ko)
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KR100233613B1 (en
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최평
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최평
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Priority to KR1019970008472A priority Critical patent/KR100233613B1/en
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Priority to JP24599697A priority patent/JP3663461B2/en
Priority to DE69737087T priority patent/DE69737087T2/en
Priority to EP97117057A priority patent/EP0865226B1/en
Priority to US08/944,211 priority patent/US6587565B1/en
Priority to HK99100838A priority patent/HK1016010A1/en
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Publication of KR100233613B1 publication Critical patent/KR100233613B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)

Abstract

본 발명은 스테레오 신호에 대해 좌, 우측 2개의 스피커를 이용하여 3차원 이미지의 소리를 재현에 있어 소리의 공간감을 확대함으로써 음장감이 있는 사운드를 재현함과 아울러 배경음을 강조하여 라이브한 효과를 내는 것으로 공간감을 확대하기 위한 기존 기술은 원 스테레오의 좌측과 우측의 음을 L+R 그리고 L-R의 신호 처리 및 주파수적인 보상을 거쳐 최종 매트릭스에서 재배치함으로서 다소의 입체감은 형성할 수 있으나 원음손실의 영향이 크고 특히 L+R신호의 부가로 인해 오히려 소프트(SOFT)에 따라서는 스테레오감을 없애버리는 역효과 및 저역대신호의 양쪽채널부가로 인해 저역대신호의 좌우측분리가 배제되어져 음의 명료성이 떨어지게 되고 특히 헤드폰으로 들었을 때는 기존의 스테레오 대비 더욱 음질이나 분리도가 떨어지는 역현상이 일어나는 문제점이 있는 것이다.The present invention is to reproduce the sound of the three-dimensional image by using the left and right two speakers for the stereo signal by reproducing the sound with a sense of sound field by emphasizing the background sound, and to create a live effect Existing techniques to increase the sense of space re-arrange the left and right notes of the original stereo in the final matrix through L + R and LR signal processing and frequency compensation. In particular, due to the addition of the L + R signal, rather than the soft (SOFT), the negative effect of eliminating the stereo feeling and the addition of both channels of the low frequency signal eliminate the left and right separation of the low frequency signal, resulting in poor sound intelligibility, especially when listening to headphones. The inverse phenomenon that sound quality or separation is worse than conventional stereo Words or will have problems.

본 발명은 좌, 우측 각각의 신호원으로부터 스테레오 이미지를 주파수적 측면에서의 추출을 위한 각 신호 채널측의 주파수 특성 제어블럭 및 좌우 각 채널의 매트릭스 수단 및 최종단에 대역보상부를 구성하므로써 상기된 문제점을 해결한 것이다.The present invention provides the above-mentioned problems by constructing a frequency characteristic control block on each signal channel side for extracting a stereo image from each of the left and right signal sources in terms of frequency, and a matrix compensation unit and a final compensator on the left and right channels. Will be solved.

Description

입체사운드 처리 시스템Stereo sound processing system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

도 1은 본 발명의 블록다이어그램.1 is a block diagram of the present invention.

도 2는 본 발명의 3차원 이미지 신호처리를 위한 주파수 처리회로.2 is a frequency processing circuit for three-dimensional image signal processing of the present invention.

도 3은 본 발명의 좌, 우측 매트릭스회로.3 is a left and right matrix circuit of the present invention.

Claims (10)

스테레오 신호를 입력으로 3차원 이미지 스테레오 신호를 만듦에 있어, 좌, 우측 신호를 입력으로 하여 음의 공간성과 방향성을 강조하고 원음보강을 위해 좌, 우측신호입력라인에 각각 설치되는 공간강조부와, 상기된 공간강조부의 출력신호와 좌, 우측신호를 매트릭스시키는 좌, 우측 채널 매트릭스로 이루어진 것을 특징으로 하는 입체사운드 처리 시스템.In making a 3D image stereo signal using the stereo signal as input, the spatial emphasis unit is installed at the left and right signal input lines to emphasize the spatial and directionality of the sound by inputting the left and right signals and to enhance the original sound; And a left and right channel matrix for matrixing the output signal and the left and right signals. 청구항 1에 있어서, 공간성강조부는 원신호에 빼낼 다채널의 신호의 주파수대역별 이득을 달리 해감으로서 좌우측의 음의 공간성 및 방향성을 올리기 위해 구성하는 필터의 특성과 원채널음의 보강용도를 갖게 되는 것을 특징으로 하는 입체사운드 처리 시스템.The method according to claim 1, wherein the spatial enhancement portion has a characteristic of the filter configured to enhance the spatial and directionality of the left and right sound by reducing the gain for each frequency band of the multi-channel signal to be extracted to the original signal and the purpose of reinforcing the original channel sound Three-dimensional sound processing system characterized by. 청구항 2에서, 필터의 후단에는 좌, 우채널 매트릭스에서의 연산을 용이하게 하기 위한 버퍼를 구성한 것을 특징으로 하는 입체사운드 처리 시스템.The stereoscopic sound processing system of claim 2, wherein a buffer for facilitating operations in left and right channel matrices is formed at a rear end of the filter. 청구항 1에 있어서 좌, 우측 채널 매트릭스는 좌측 출력 aL-bαR+cαL와 우측 출력 aR-bαL+cαR의 특성을 가지며 여기서 a는 고역통과특성을 가지고 인수요소관계는 a≤b 혹은 a≥c 관계를 갖도록 연산관계의 인수를 갖는 것을 특징으로 하는 입체사운드 처리 시스템.The method according to claim 1, the left and right channel matrix has the characteristics of the left output aL-bαR + cαL and the right output aR-bαL + cαR, where a has a high pass characteristics and the factor factor relationship is a≤b or a≥c A three-dimensional sound processing system, characterized in that it has an argument of arithmetic relation to have. 청구항 1에 있어서, 특정대역의 음의 재현특성을 향상시키기 위한 대역보상부를가지는 입체사운드 처리 시스템.The stereoscopic sound processing system according to claim 1, further comprising a band compensator for improving sound reproduction characteristics of a specific band. 스테레오 신호를 입력으로 3차원 이미지 스테레오신호를 만듦에 있어, 좌측과 우측의 각각의 신호로부터 공간성 및 방향성 강조성분을 도출키 위한 공간성요소 발췌수단과 이들로부터 발췌된 2개의 신호와 주신호 각각과 상호감산 및 주채널에 가산구조를 가지는 좌측 매트릭스수단과 우측 매트릭스수단, 특정대역의 재현특성을 올리기 위한 대역보상부로 이루어진 것을 특징으로 하는 입체사운드 처리 시스템.In making a three-dimensional image stereo signal by inputting a stereo signal, a spatial element extracting means for deriving spatial and directional enhancement components from each of the left and right signals and the two signals and the main signal extracted from them A three-dimensional sound processing system comprising: a left matrix means and a right matrix means having an addition structure to a subtraction and main channel, and a band compensator for enhancing reproduction characteristics of a specific band. 청구항 6에 있어서, 좌, 우측 각각의 매트릭스 수단은 aL-bαR+cαL과 aR-bαL+cαR에 있어 인수요소관계는 a≤b 혹은 a≤c이고 α는 필터적 특성을 가지며 이 특성에 의해 공간성 및 원채널 중고역의 보상작용도 가능한 것을 특징으로 하는 입체사운드 처리 시스템.7. The matrix element of claim 6, wherein each of the left and right matrix means has a factor of a≤b or a≤c for aL-bαR + cαL and aR-bαL + cαR, and α has a filter characteristic, And three-dimensional sound processing system characterized in that the compensation operation of the one-channel mid-range. 청구항 6에 있어서, 공간성 요소발췌수단은 중역주파수대를 중심으로 하여 공간성과 음성감쇄방지의 2가지 요소를 동시에 갖는 주파수특성을 갖는 것을 특징으로 하는 입체사운드 처리 시스템.7. The three-dimensional sound processing system according to claim 6, wherein the spatial element extracting means has a frequency characteristic having two elements of spatial and speech attenuation prevention at the center of the mid frequency band. 스테레오 신호입력에 대해 3차원 이미지 성분의 신호로의 변환 및 주파수 특성보상 녹화함에 있어, 음의 공간성과 방향성을 강조하고 원음보강을 위해 좌, 우측 입력신호라인에 구성되는 공간성 조정부와, 각각의 신호와 주신호와의 매트릭스적인 연산구조를 갖는 좌, 우측 채널의 매트릭스를 구비한 것을 특징으로 하는 입체사운드 처리 시스템.3D image component conversion and frequency characteristic compensation recording for stereo signal input, spatiality adjusting unit configured on the left and right input signal lines to emphasize sound spatiality and directionality and to enhance original sound, and each signal And a matrix of left and right channels having a matrix arithmetic structure with the main signal. 청구항 9항에 있어 특정대역의 음의 재현특성을 향상시키기 위한 대역 보상부를 가지는 입체사운드 처리 시스템.The stereoscopic sound processing system according to claim 9, further comprising a band compensation unit for improving sound reproduction characteristics of a specific band. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019970008472A 1997-03-13 1997-03-13 3d audio processing system KR100233613B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1019970008472A KR100233613B1 (en) 1997-03-13 1997-03-13 3d audio processing system
JP24599697A JP3663461B2 (en) 1997-03-13 1997-08-28 Frequency selective spatial improvement system
DE69737087T DE69737087T2 (en) 1997-03-13 1997-10-01 System for improving the surround effect of stereo sound or coded sound signals
EP97117057A EP0865226B1 (en) 1997-03-13 1997-10-01 A system for improving a spatial effect of stereo sound or encoded sound
US08/944,211 US6587565B1 (en) 1997-03-13 1997-10-06 System for improving a spatial effect of stereo sound or encoded sound
HK99100838A HK1016010A1 (en) 1997-03-13 1999-03-02 A system for improving a spatial effect of stereo sound or encoded sound

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KR1019970008472A KR100233613B1 (en) 1997-03-13 1997-03-13 3d audio processing system

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KR970032269A true KR970032269A (en) 1997-06-26
KR100233613B1 KR100233613B1 (en) 1999-12-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000041065A (en) * 1998-12-21 2000-07-15 이형도 Three-dimension sound headphone

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100921708B1 (en) * 2002-10-28 2009-10-15 엘지전자 주식회사 A stereophonic sound system
US8792647B2 (en) * 2010-12-17 2014-07-29 Dalwinder Singh Sidhu Circuit device for providing a three-dimensional sound system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000041065A (en) * 1998-12-21 2000-07-15 이형도 Three-dimension sound headphone

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