KR960009434A - Noise canceling method of receiving sound in communication device and device therefor - Google Patents

Noise canceling method of receiving sound in communication device and device therefor Download PDF

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Publication number
KR960009434A
KR960009434A KR1019940019145A KR19940019145A KR960009434A KR 960009434 A KR960009434 A KR 960009434A KR 1019940019145 A KR1019940019145 A KR 1019940019145A KR 19940019145 A KR19940019145 A KR 19940019145A KR 960009434 A KR960009434 A KR 960009434A
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KR
South Korea
Prior art keywords
noise
signal
degree
subtracting
sound
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KR1019940019145A
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Korean (ko)
Inventor
신민철
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구자홍
엘지전자 주식회사
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Priority to KR1019940019145A priority Critical patent/KR960009434A/en
Publication of KR960009434A publication Critical patent/KR960009434A/en

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Abstract

본 발명은 휴대폰(셀룰라폰, 카폰)을 포함한 모든 통화기기에서의 음향 수신 장치에 관한 것으로 특히, 송신하려고 하는 신호중 잡음이 존재하는 가를 판단하는 제1과정과, 상기 제1과정에서 잡음이 존재한다고 판단되는 경우 잡음의 정도를 추정하는 제2과정과, 상기 제2과정에서 추정된 잡음의 정도에 따라 순수한 잡음신호를 발생시키는 제3과정 및 상기 제3과정에서 발생되어진 잡음 신호를 수신되는 음성신호에서 감산하여 주변잡음에 대응하는 잡음의 위상반전신호를 상기 음성신호를 섞는 제4과정을 포함하는 것을 특징으로 하는 통화기기에서 수신음향의 잡음 제거 방법 및 이를 적용한 장치를 제공하여 통화시에 잡음으로 인하여 통화시에 주변잡음으로 인하여 상대방으로부터 송출되어진 메시지를 정확하게 전달받기가 어려웠던 문제점을 해결하는 효과가 있다.The present invention relates to a sound receiving apparatus in all call devices, including mobile phones (cellular phones, car phones). In particular, the first step of determining whether there is noise in the signal to be transmitted, and the noise is present in the first step A second process of estimating the degree of noise, a third process of generating a pure noise signal according to the degree of noise estimated in the second process, and a voice signal receiving the noise signal generated in the third process if it is determined And a fourth process of mixing the voice signal with the phase inversion signal of the noise corresponding to the ambient noise by subtracting the signal from the voice signal. Due to this problem, it was difficult to correctly receive the message sent from the other party due to the surrounding noise. This has the effect of.

Description

통화기기에서 수신음향의 잡음 제거 방법 및 그 장치Noise canceling method of receiving sound in communication device and device therefor

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

제1도는 본 발명에 따른 수신음향의 잡음 제거 장치의 개념을 설명하기 위한 개략도.1 is a schematic view for explaining the concept of the noise canceling device of the received sound according to the present invention.

Claims (3)

디지탈 통신기기에서 수신음향 개선방법에 있어서, 송신하려고 하는 신호중 잡음이 존재하는가를 판단하는 제1과정과, 상기 제1과정에서 잡음이 존재한다고 판단되는 경우 잡음의 정도를 추정하는 제2과정과, 상기 제2과정에서 추정된 잡음의 정도에 따라 순수한 잡음신호를 발생시키는 제3과정 및 상기 제3과정에서 발생되어진 잡음신호를 수신되는 음성신호에서 감산하여 주변잡음에 대응하는 잡음의 위상반전신호를 상기 음성신호에 섞는 제4과정을 포함하는 것을 특징으로 하는 통화기기에서 수신음향의 잡음 제거 방법.A method for improving reception sound in a digital communication device, the method comprising: a first process of determining whether noise is present in a signal to be transmitted; a second process of estimating a degree of noise when it is determined that noise is present in the first process; The third process of generating a pure noise signal according to the degree of noise estimated in the second process and the noise signal generated in the third process is subtracted from the received voice signal to convert the phase inversion signal of the noise corresponding to the ambient noise. And a fourth process of mixing the voice signal. 제1항에 있어서, 상기 제2과정은 수신되는 신호중에 섞여 있는 원래의 잡음을 검지하는 제1단계와, 상기 제3과정에서 발생되어지는 순수한 잡음을 검지하는 제2단계, 및 상기 제1단계와 제2단계에서 검지되어진 잡음의 차를 잡음의 정도로 판단하는 제3단계로 이루어지는 것을 특징으로 하는 통화기기에서 수신음향의 잡음 제거 방법.The method of claim 1, wherein the second process comprises: a first step of detecting original noise mixed in a received signal; a second step of detecting pure noise generated in the third step; and the first step And a third step of determining the difference between the noise detected in the second step and the degree of noise. 디지탈 통신기기에서 수신음향 개선 장치에 있어서, 마이크를 통하여 포착되는 음향신호를 디지탈신호로 변환하는 제1A/D변환수단과, 입력되는 제어신호에 따라 잡음의 정도를 추정하여 순수한 잡음신호를 생성하여 출력하는 잡음생성수단과, 상기 제1A/D변환수단에서 출력되는 음향신호와 상기 잡음생성수단에서 출력되는 잡음신호를 입력받아 상기 음향신호에서 상기 잡음신호를 감산하여 출력하는 제1신호감산수단과, 상기 제1신호감산수단에서 출력되는 신호를 제어신호에 따라 입력받아 잡음의 정도를 산출하여 상기 잡음생성수단에 제어신호를 입력하는 잡음정도 산출수단과, 수신되는 신호를 입력받아 디지탈신호로 변환하는 제2A/D변환수단과, 상기 제2A/D변환수단에서 출력되는 음향 디지탈신호와 상기 잡음생성 수단에서 출력되는 잡음신호를 입력받아 상기 음향 디지탈신호에서 상기 잡음신호를 감산하여 출력하는 제2신호감산수단과, 상기 제2신호감산수단에서 출력되는 신호를 입력받아 아날로그 신호로 변환하는 D/A변환수단, 및 상기 제1A/D변환수단에서 출력되는 음향신호를 입력받아 잡음이 존재하는 가를 판단하여 잡음이 있다고 판단되는 경우 상기 잡음정도 산출수단을 동작시키는 잡음검출수단을 포함하는 것을 특징으로 하는 통화기기에서 수신음향의 잡음 제거 장치.An apparatus for improving a reception sound in a digital communication device, comprising: first A / D conversion means for converting an acoustic signal captured by a microphone into a digital signal, and generating a pure noise signal by estimating a degree of noise according to an input control signal; A first signal subtracting means for receiving the noise generating means for outputting, a sound signal output from the first A / D converting means and a noise signal output from the noise generating means, and subtracting the noise signal from the sound signal and outputting the noise signal; A noise degree calculating means for inputting a signal output from the first signal subtracting means according to a control signal to calculate a degree of noise and inputting a control signal to the noise generating means, and receiving the signal and converting the received signal into a digital signal Second A / D conversion means, an acoustic digital signal output from the second A / D conversion means, and a noise signal output from the noise generating means. Second signal subtraction means for subtracting the noise signal from the acoustic digital signal and outputting the signal; D / A conversion means for receiving a signal output from the second signal subtraction means and converting the signal into an analog signal; and the first A The noise of the received sound in the telephone apparatus comprising a noise detecting means for operating the noise degree calculating means when it is determined that there is noise by receiving the acoustic signal output from the / D conversion means Removal device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940019145A 1994-08-02 1994-08-02 Noise canceling method of receiving sound in communication device and device therefor KR960009434A (en)

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KR1019940019145A KR960009434A (en) 1994-08-02 1994-08-02 Noise canceling method of receiving sound in communication device and device therefor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100277800B1 (en) * 1997-11-21 2001-01-15 강상훈 Channel modem with noise adding function in satellite communication system and its noise adding method
KR20040028029A (en) * 2002-09-28 2004-04-03 엘지전자 주식회사 Method and apparatus for eliminating the noise
KR100818373B1 (en) * 2006-06-08 2008-04-01 한국정보통신주식회사 Obstacle Blocking Devices and Program Recording Medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100277800B1 (en) * 1997-11-21 2001-01-15 강상훈 Channel modem with noise adding function in satellite communication system and its noise adding method
KR20040028029A (en) * 2002-09-28 2004-04-03 엘지전자 주식회사 Method and apparatus for eliminating the noise
KR100818373B1 (en) * 2006-06-08 2008-04-01 한국정보통신주식회사 Obstacle Blocking Devices and Program Recording Medium

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