KR20000000426U - Voice Recorder with Ultrasonic Speaker - Google Patents

Voice Recorder with Ultrasonic Speaker Download PDF

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Publication number
KR20000000426U
KR20000000426U KR2019980009870U KR19980009870U KR20000000426U KR 20000000426 U KR20000000426 U KR 20000000426U KR 2019980009870 U KR2019980009870 U KR 2019980009870U KR 19980009870 U KR19980009870 U KR 19980009870U KR 20000000426 U KR20000000426 U KR 20000000426U
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South Korea
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ultrasonic
voice
voice recorder
speaker
signal
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KR2019980009870U
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Korean (ko)
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김병석
노일영
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윤종용
삼성전자 주식회사
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Priority to KR2019980009870U priority Critical patent/KR20000000426U/en
Publication of KR20000000426U publication Critical patent/KR20000000426U/en

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Abstract

초음파스피커를 채용한 보이스레코더는 보이스레코더에 직진성이 강한 초음파스피커를 채용하여 재생되는 음성신호를 거리에 상관없이 원하는 사람에게만 잘 들릴 수 있도록 하기 위한 것이다. 본 고안의 보이스레코더는 메모리에서 읽혀져 재생되는 음성신호를 초음파대역의 반송파주파수신호에 실어 변조한 후 증폭하여 외부로 발생하는 초음파스피커시스템을 채용한다. 그래서, 발생된 초음파가 공기중을 전파하면서 반송초음파음과 비선형 상호작용에 의해 가청주파수의 음파로 변환되면서 양질의 음성이 들리게 된다. 따라서, 본 고안은 직진성이 강한 초음파스피커를 보이스레코더에 채용하여 원하는 사람쪽으로 스피커를 향하게 하면 거리에 상관없이 원하는 사람만 잘 들리고 그 이외의 사람에게는 잘 들리지 않게 할 수 있는 효과를 제공한다.The voice recorder employing the ultrasonic speaker is intended to make the voice signal reproduced to the desired person well regardless of the distance by employing an ultrasonic speaker with a strong straightness to the voice recorder. The voice recorder of the present invention employs an ultrasonic speaker system that is externally generated by amplifying the audio signal read and reproduced from a memory in a carrier frequency signal of an ultrasonic band. Thus, the generated ultrasonic waves are propagated in the air and converted into sound waves of an audible frequency by nonlinear interaction with the carrier ultrasonic sound, so that a good voice is heard. Therefore, the present invention employs an ultrasonic speaker with a strong straightness in the voice recorder and aims the speaker toward the desired person, thereby providing an effect that only the desired person can be heard well regardless of the distance, and to others.

Description

초음파스피커를 채용한 보이스레코더Voice Recorder with Ultrasonic Speaker

본 고안은 보이스레코더(voice recorder; V/R)에 관한 것으로, 보다 상세하게는, 보이스레코더(V/R)에 직진성이 강한 초음파스피커를 채용하여 거리에 상관없이 원하는 사람만이 양질의 소리를 들을 수 있도록 한 초음파스피커를 채용한 보이스레코더에 관한 것이다.The present invention relates to a voice recorder (V / R). More specifically, the voice recorder (V / R) employs an ultrasonic speaker that has a strong straightness, so that only a desired person, regardless of distance, can have a good sound. The present invention relates to a voice recorder employing an ultrasonic speaker for listening.

보이스레코더(V/R)는 음성을 테이프(tape)등의 자기기록매체가 아닌 메모리(memory)에 녹음 및 재생할 수 있는 음향기기를 말한다. 즉, 보이스레코더(V/R)는 마이크(MIC)를 통해 유입되는 음성신호를 코딩(coding)하여 메모리에 녹음하고, 메모리에 녹음된 음성신호를 읽어내어 사용자가 들을 수 있는 형태로 디코딩(decoding)하여 스피커(speaker)를 통해 외부송출한다. 통상 음향재생기기의 전체 음질을 가장 크게 좌우하는 것이 바로 스피커이다. 일반스피커는 영구자석 내부의 보이스코일(voice coil)에 전류를 보내면, 전류의 방향에 따라 코일을 밀었다 당겼다하여 그 코일 끝에 공기를 밀어내고 당기게 할 수 있도록 하여 소리를 낸다. 한편, 스피커 대용으로 귀에 꽂아 사용하는 이어폰(ear-phone)도 있다.The voice recorder (V / R) refers to an audio device capable of recording and reproducing voice into a memory, not a magnetic recording medium such as a tape. That is, the voice recorder (V / R) codes the voice signal flowing through the microphone (MIC) to record in the memory, reads the voice signal recorded in the memory and decodes it in a form that can be heard by the user. ) And send it out through the speaker. In general, the speaker is the most dominant influence on the overall sound quality of the sound reproducing apparatus. When a general speaker sends a current to a voice coil inside a permanent magnet, it pushes and pulls the coil according to the direction of the current so that the air can be pushed and pulled at the end of the coil to make a sound. There is also an ear-phone that is used as a substitute for a speaker.

그런데, 위와 같은 보이스레코더(V/R)는 휴대용으로 외부에서 많이 사용되므로, 기존 채용되고 있는 일반스피커나 이어폰보다 양질의 소리를 거리에 상관없이 사용자에게 제공해야할 필요가 있었다.However, since the voice recorder (V / R) as described above is portable and widely used from the outside, it was necessary to provide a user with a sound quality higher than that of a conventional speaker or earphone that is conventionally employed regardless of distance.

따라서, 본 고안의 목적은 이러한 점을 감안하여, 보이스레코더(V/R)에 직진성향이 강한 초음파스피커를 채용하여 거리에 상관없이 원하는 사람에게만 양질의 소리를 제공할 수 있도록 한 초음파스피커를 채용한 보이스레코더를 제공함에 있다.Therefore, the object of the present invention in consideration of this point, by adopting an ultrasonic speaker with a strong tendency to go straight to the voice recorder (V / R) employing an ultrasonic speaker that can provide high-quality sound only to the desired person regardless of distance. To provide a voice recorder.

도면은 본 고안에 의한 초음파스피커를 채용한 보이스레코더를 나타내는 구성도.The figure is a block diagram which shows the voice recorder which employ | adopted the ultrasonic speaker by this invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

11 : 메모리 12 : 마이콤11: memory 12: microcomputer

13 : 코덱 14 : 초음파스피커부13: codec 14: ultrasonic speaker unit

141 : 초음파음성변조기 142 : 초음파증폭기141: ultrasonic voice modulator 142: ultrasonic amplifier

143 : 초음파트랜스듀서143: Ultrasonic Transducer

이와 같은 목적을 달성하기 위한 본 고안의 초음파스피커를 채용한 보이스레코더는, 보이스레코더에 있어서, 상기 보이스레코더에서 재생되는 음성신호를 초음파대역의 반송파주파수신호에 실어 변조하는 초음파음성변조부, 및 상기 초음파로 변조된 음성신호를, 사용자가 들을 수 있는 가청주파수의 음파로 변환되도록 외부로 발생시키는 초음파트랜스듀서를 포함한다.The voice recorder employing the ultrasonic speaker of the present invention for achieving the above object is, in the voice recorder, an ultrasonic voice modulator for carrying a modulated voice signal reproduced by the voice recorder in a carrier frequency signal of the ultrasonic band, and the Ultrasonic transducer for generating the sound signal modulated by the ultrasonic wave to the outside to be converted into sound waves of an audible frequency that can be heard by the user.

이하, 첨부한 도면을 참조하여 본 고안의 바람직한 실시예를 상세히 기술하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도면은 본 고안의 일실시예에 따른 초음파스피커를 채용한 보이스레코더의 구성도를 나타낸다. 도면에 나타낸 보이스레코더는 일반 보이스레코더의 구성을 모두 포함하며, 일반스피커 대신 본 고안에 의한 초음파스피커부(14)를 포함한다. 즉, 음성 녹음매체인 메모리(11), 각 구성의 동작을 전반적으로 제어하는 마이콤(12), 및 음성신호를 녹음 및 재생가능한 형태로 신호처리하는 코덱(codec)(13)을 구비한다. 또한, 초음파스피커부(14)는 코덱(13)에서 재생처리된 음성신호를 초음파신호로 변조하는 원칩(one-chip)화된 초음파음성변조기(141)와, 이를 일정크기로 증폭하여 출력하는 초음파증폭기(142), 및 증폭된 초음파신호를 외부로 발생시키는 초음파트랜스듀서(ultrasonic transducer)(143)로 이루어진다. 이러한 구성을 갖는 초음파스피커를 채용한 보이스레코더의 동작을 구체적으로 설명한다.The figure shows a block diagram of a voice recorder employing an ultrasonic speaker according to an embodiment of the present invention. The voice recorder shown in the drawing includes all the configurations of a general voice recorder, and includes an ultrasonic speaker unit 14 according to the present invention instead of the general speaker. That is, a memory 11, which is a voice recording medium, a microcomputer 12 for overall control of the operation of each component, and a codec 13 for signal processing of a voice signal in a form capable of recording and reproducing. In addition, the ultrasonic speaker unit 14 is a one-chip ultrasonic voice modulator 141 for modulating the audio signal reproduced by the codec 13 into an ultrasonic signal, and an ultrasonic amplifier for amplifying and outputting it to a predetermined size. 142, and an ultrasonic transducer 143 for generating an amplified ultrasonic signal to the outside. The operation of the voice recorder employing the ultrasonic speaker having such a configuration will be described in detail.

도면에서, 메모리(11)에는 마이크(미도시)를 통해 유입된 음성신호가 코덱(13)을 통해 코딩되어 녹음된 상태이다. 통상, 메모리(11)는 플래쉬메모리(flash memory)를 사용한다. 이를 재생시, 마이콤(12)은 메모리(11)에 녹음된 음성신호를 읽어내어 코덱(13)으로 전달한다. 코덱(13)은 입력받은 음성신호를 코딩되기 이전상태로 디코딩하여 초음파스피커부(14)로 출력한다. 초음파스피커부(14)의 초음파음성변조기(141)는 20㎑ 이상의 초음파대역 반송주파수신호에 코덱(13)에 의해 재생된 음성신호를 실어 변조한 후 초음파증폭기(142)를 통해 증폭하고, 압전소자와 같은 초음파트랜스듀서(143)에 의해 초음파로 변조된 음성신호를 발생시킨다. 이렇게 발생된 초음파는 공기중을 전파하면서 반송초음파음과 비선형 상호작용에 의해 가청주파수의 음파로 변환되며, 이 음파는 강한 직진성과 반사성을 갖게 된다. 그래서, 초음파스피커를 채용한 보이스레코더(V/R)는 그 스피커방향에 따라서 잘들리기도 하고 안들리기도 한다. 보이스레코더(V/R)의 스피커를 듣고자 하는 사람의 귀의 방향으로 향하게 하면 잘들리게 된다. 특히, 거리에 상관없이 잘들리게 되어 멀리 떨어져 있는 사람도 재생되는 음성을 잘 들을 수 있게 된다.In the drawing, the voice signal introduced through the microphone (not shown) is coded and recorded by the codec 13 in the memory 11. Normally, the memory 11 uses flash memory. Upon reproducing it, the microcomputer 12 reads the audio signal recorded in the memory 11 and delivers it to the codec 13. The codec 13 decodes the input voice signal to a state before coding and outputs the decoded voice signal to the ultrasonic speaker unit 14. The ultrasonic voice modulator 141 of the ultrasonic speaker unit 14 loads and modulates an audio signal reproduced by the codec 13 in an ultrasonic band carrier frequency signal of 20 kHz or more, and then amplifies the ultrasonic signal through the ultrasonic amplifier 142. The ultrasonic transducer 143 generates an audio signal modulated by ultrasonic waves. The generated ultrasonic waves are converted into sound waves of an audible frequency by nonlinear interaction with carrier ultrasonic waves while propagating in the air, and these sound waves have strong straightness and reflectivity. Thus, a voice recorder (V / R) employing an ultrasonic speaker may or may not be heard well depending on the speaker direction. Point the speaker of the voice recorder (V / R) in the direction of the person's ear to hear it. In particular, it can be heard well regardless of distance, so that people who are far away can hear the played voice.

상술한 바와 같이, 본 고안의 초음파스피커를 채용한 보이스레코더는 직진성향이 강한 초음파스피커를 보이스레코더에 채용하여 양질의 음성을 거리에 상관없이 들을 수 있도록 하는 효과를 갖는다.As described above, the voice recorder employing the ultrasonic speaker of the present invention has the effect of employing an ultrasonic speaker with a strong propensity to go straight to the voice recorder to hear a good quality voice regardless of the distance.

Claims (2)

보이스레코더에 있어서,In the voice recorder, 상기 보이스레코더에서 재생되는 음성신호를 초음파대역의 반송파주파수신호에 실어 변조하는 초음파음성변조부; 및An ultrasonic voice modulator for modulating the voice signal reproduced by the voice recorder on a carrier frequency signal of an ultrasonic band; And 상기 초음파로 변조된 음성신호를, 사용자가 들을 수 있는 가청주파수의 음파로 변환되도록 외부로 발생시키는 초음파트랜스듀서를 포함하는 초음파스피커를 채용한 보이스레코더.A voice recorder employing an ultrasonic speaker including an ultrasonic transducer for generating the ultrasonic signal modulated by the ultrasonic wave to an external sound wave of an audible frequency that can be heard by the user. 제 1항에 있어서, 상기 초음파음성변조부에서 초음파로 변조된 음성신호를 증폭하여 초음파트랜스듀서로 출력하는 초음파증폭기를 더 포함하는 초음파스피커를 채용한 보이스레코더.The voice recorder according to claim 1, further comprising an ultrasonic amplifier for amplifying a sound signal modulated by ultrasonic waves in the ultrasonic voice modulator and outputting the amplified voice signal to an ultrasonic transducer.
KR2019980009870U 1998-06-10 1998-06-10 Voice Recorder with Ultrasonic Speaker KR20000000426U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030089281A (en) * 2002-05-17 2003-11-21 박선순 Acoustic signal transmission method and system using ultra-sound modulation and demodulation in air space
KR100701428B1 (en) * 2005-03-24 2007-04-02 주식회사 솔리토닉스 Mobile-communication terminal board having ultrasonic speaker system
KR20190047765A (en) 2017-10-28 2019-05-09 박지현 Speaker with music box
CN111317001A (en) * 2020-03-24 2020-06-23 安徽盼盼食品有限公司 Continuous frying device for hollow crisp production
KR20210026239A (en) * 2019-08-29 2021-03-10 고려대학교 산학협력단 Method and device for preventing unauthorized audio recording, and method and device for restoring original recording
US11869526B2 (en) 2003-04-15 2024-01-09 Ipventure, Inc. Hearing enhancement methods and systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030089281A (en) * 2002-05-17 2003-11-21 박선순 Acoustic signal transmission method and system using ultra-sound modulation and demodulation in air space
US11869526B2 (en) 2003-04-15 2024-01-09 Ipventure, Inc. Hearing enhancement methods and systems
KR100701428B1 (en) * 2005-03-24 2007-04-02 주식회사 솔리토닉스 Mobile-communication terminal board having ultrasonic speaker system
KR20190047765A (en) 2017-10-28 2019-05-09 박지현 Speaker with music box
KR20210026239A (en) * 2019-08-29 2021-03-10 고려대학교 산학협력단 Method and device for preventing unauthorized audio recording, and method and device for restoring original recording
CN111317001A (en) * 2020-03-24 2020-06-23 安徽盼盼食品有限公司 Continuous frying device for hollow crisp production

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