KR960009466A - Noise canceling method for transmitting sound in communication equipment and device therefor - Google Patents

Noise canceling method for transmitting sound in communication equipment and device therefor Download PDF

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Publication number
KR960009466A
KR960009466A KR1019940019144A KR19940019144A KR960009466A KR 960009466 A KR960009466 A KR 960009466A KR 1019940019144 A KR1019940019144 A KR 1019940019144A KR 19940019144 A KR19940019144 A KR 19940019144A KR 960009466 A KR960009466 A KR 960009466A
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KR
South Korea
Prior art keywords
noise
signal
degree
sound
generating
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KR1019940019144A
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Korean (ko)
Inventor
신민철
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구자홍
엘지전자 주식회사
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Priority to KR1019940019144A priority Critical patent/KR960009466A/en
Publication of KR960009466A publication Critical patent/KR960009466A/en

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Abstract

본 발명은 휴대폰(셀룰라폰, 카폰)을 포함한 모든 통화기기에서의 음향 송신 장치에 관한 것으로 특히, 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 잡음 신호를 송신하려고 하는 신호에서 감산하여 잡음의 정도를 낮추는 제4과정을 포함하는 것을 특징으로 하는 통화기기에서 송신음향의 잡음 제거 방법 및 이를 적용한 장치를 제공하여 통화시에 잡음으로 인하여 상대방에게 정확한 메시지의 전달이 어려웠던 종래의 문제점과 잡음으로 인해 상대방에게 불쾌감을 줄 수있다는 문제점을 해소하는 효과가 있다.The present invention relates to an apparatus for transmitting sound in all telephone apparatuses including cellular phones (cellular phones and car phones). In particular, the present invention relates to a first process for determining whether there is noise in a signal to be transmitted, and that the noise is present in the first process. A second process of estimating the degree of noise, a third process of generating a pure noise signal in accordance with the degree of noise estimated in the second process, and a signal to transmit a noise signal generated in the third process if it is determined It provides a method for removing noise of the transmission sound and a device applying the same in the communication device characterized in that it comprises a fourth step of reducing the degree of noise by subtracting from It is effective to solve the problem that the problem can be offended by noise and noise.

Description

통화기기에서 송신음향의 잡음 제거 방법 및 그 장치Noise canceling method for transmitting sound in communication equipment and device therefor

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

제1도는 본 발명에 따른 송신음향의 잡음 제거 장치의 개념을 설명하기 위한 개략도.1 is a schematic diagram for explaining a concept of an apparatus for removing noise of a transmission sound according to the present invention.

Claims (4)

디지탈 통신기기에 송신 음향 개선 방법에 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 잡음 신호를 송신하려고 하는 신호에서 감산하여 잡음의 정도를 낮추는 제4과정을 포함하는 것을 특징으로 하는 통화기기에서 송신음향의 잡음 제거 방법.A method of improving transmission 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; A third step of generating a pure noise signal according to the degree of noise estimated in the second step and a fourth step of subtracting from a signal to transmit a noise signal generated in the third step to lower the level of noise; Noise canceling method of the transmission sound in the communication device, characterized in that. 제1항에 있어서, 송신되는 신호에 잡음이 존재하지 않을때까지 상기 제4과정에서 잡음의 정도를 낮추어 놓은 신호를 상기 제2과정으로 궤환시키는 과정을 더 포함하는 것을 특징으로 하는 통화기기에서 송신음향의 잡음 제거 방법.The transmission apparatus of claim 1, further comprising the step of: returning a signal having a lower level of noise in the fourth process to the second process until there is no noise in the transmitted signal. How to remove noise from sound. 제1항에 있어서, 상기 제2과정은 송신되는 신호중에 섞여 있는 원래의 잡음을 검지하는 제1단계와, 상기 제3과정에서 발생되어지는 순수한 잡음을 검지하는 제2단계, 및 상기 제1단계와, 제2단계에서 검지되어진 잡음의 차를 잡음의 정도로 판단하는 제3단게로 이루어지는 것을 특징으로 하는 통화기기에서 송신음향의 잡음 제거 방법.The method of claim 1, wherein the second process comprises: a first step of detecting original noise mixed in a transmitted 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 of the noise detected in the second step to the extent of the noise. 디지탈 통신기기에서 송신 음향 개선 장치에 있어서, 마이크를 통하여 포착되는 음향신호를 디지탈신호로 변환하는 A/D변환수단과, 입력되는 제어신호에 따라 잡음의 정도를 추정하여 순수한 잡음신호를 생성하여 출력하는 잡음생성수단과, 상기 A/D변환수단에서 출력되는 음향신호와 상기 잡음생성수단에서 출력되는 잡음신호를 입력받아 상기 음향신호에서 상기 잡음신호를 감산하여 출력하는 신호감산수단과, 상기 신호감산수단에서 출력되는 신호를 제어신호에 따라 입력받아 잡음의 정도를 산출하여 잡음생성수단에 제어신호를 입력하는 잡음정도 산출수단, 및 상기 A/D변환수단에서 출력되는 음향신호를 입력받아 잡음이 존재하는가를 판단하여 잡음이 있다고 판단되는 경우 상기 잡음정도 산출수단을 동작시키는 잡음검출수단을 포함하는 것을 특징으로 하는 통화기기에서 송신음향의 잡음제거 장치.An apparatus for improving a transmission sound in a digital communication device, comprising: A / D conversion means for converting an acoustic signal captured through a microphone into a digital signal, and generating a pure noise signal by estimating the degree of noise according to an input control signal. A signal generating means for receiving a noise signal output from the A / D conversion means and a noise signal output from the noise generating means, and subtracting the noise signal from the sound signal and outputting the signal; A noise degree calculating means for inputting a signal output from the means according to a control signal to calculate a degree of noise and inputting a control signal to the noise generating means, and a noise received from the sound signal output from the A / D conversion means Including noise detection means for operating said noise degree calculation means when it is determined that there is noise Noise reduction apparatus of a transmission sound at call device according to claim. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940019144A 1994-08-02 1994-08-02 Noise canceling method for transmitting sound in communication equipment and device therefor KR960009466A (en)

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KR1019940019144A KR960009466A (en) 1994-08-02 1994-08-02 Noise canceling method for transmitting sound in communication equipment and device therefor

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KR1019940019144A KR960009466A (en) 1994-08-02 1994-08-02 Noise canceling method for transmitting sound in communication equipment and device therefor

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KR960009466A true KR960009466A (en) 1996-03-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100342715B1 (en) * 2000-05-22 2002-07-02 서평원 Device for removing harmonics in communication equipment
KR100418471B1 (en) * 1999-12-18 2004-02-14 엘지전자 주식회사 method for ISDN subscriber board testing in switching system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100418471B1 (en) * 1999-12-18 2004-02-14 엘지전자 주식회사 method for ISDN subscriber board testing in switching system
KR100342715B1 (en) * 2000-05-22 2002-07-02 서평원 Device for removing harmonics in communication equipment

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