WO2014046342A1 - Speaker rub and buzz testing method and speaker testing apparatus using same - Google Patents

Speaker rub and buzz testing method and speaker testing apparatus using same Download PDF

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Publication number
WO2014046342A1
WO2014046342A1 PCT/KR2012/010825 KR2012010825W WO2014046342A1 WO 2014046342 A1 WO2014046342 A1 WO 2014046342A1 KR 2012010825 W KR2012010825 W KR 2012010825W WO 2014046342 A1 WO2014046342 A1 WO 2014046342A1
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speaker
value
normal
buzz
rub
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PCT/KR2012/010825
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French (fr)
Korean (ko)
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백정훈
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시그마엘텍(주)
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements

Definitions

  • the present invention relates to a speaker abnormal sound test method and a speaker test apparatus using the same. More specifically, the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker and using the same
  • the present invention relates to a speaker inspection apparatus.
  • a speaker is a device that converts sound in the form of an electrical signal into a sound heard by a person's ear.
  • Such a speaker has a cone speaker system for directly vibrating air by vibrating a diaphragm, and a horn speaker system for taking out vibrations as a horn and emitting sound.
  • coin type electromagnetic type
  • electrostatic type dielectric type
  • magnetostriction etc. according to the principle and method for converting an electrical signal into sound waves.
  • coin type dynamic type
  • the coin type uses the principle that when a voice signal current flows to the voice coil in the magnetic field of the permanent magnet, a mechanical force acts on the coil according to the strength of the current to cause movement.
  • the electromagnetic type sends a voice current to the coil installed at the end of the permanent magnet to vibrate the iron pieces between the coils, and transmits the vibration to the diaphragm by the lever to emit sound. Because of its simple handling, it has been widely used in home radios, but its high frequency characteristics are poor and distorted.
  • the electrostatic type is sometimes used for high sound levels, and the dielectric type and magnetostriction are used in the ultrasonic region of 20 kHz or more rather than the audible frequency.
  • the speakers for audible frequencies especially those used for high frequency bands (10kHz and above) are called tweeters, which are mixed, conical, and low in weight.
  • the speaker is manufactured through various processes, and often causes mechanical or structural defects in voice coils, frames, and speeders. Loudspeakers that are defective in the manufacturing process generate abnormal Rub & Buzz of non-linear impulse field.
  • an object of the present invention is to provide a speaker abnormal sound test method and a speaker test apparatus using the same that can quickly and accurately test the abnormal sound of the speaker.
  • the above object is, according to an embodiment of the present invention, in the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker, the abnormal sound characteristics of the normal speaker positive Displaying a normal value by a value; An inversion value displaying step of displaying the abnormal sound characteristic of the normal speaker as a negative value; An inspection object value display step of displaying an abnormal sound characteristic of the inspection object speaker as a positive value; A correction value display step of displaying a corrected result value by adding a negative value of the inversion value display step and a positive value of the inspection object value display step; An upper limit value setting step of setting an upper limit value of a predetermined range based on the abnormal sound characteristic of the normal speaker; And an abnormal sound determination step of determining whether the corrected value exceeds the upper limit value as a normal speaker or a bad speaker.
  • the method may further include setting a reference graph having zero slope by adding a positive value of the normal value display step and a negative value of the inverted value display step, wherein the upper limit value and the correction value are set to the reference graph. It is characterized by determining the normal speaker or bad speaker by displaying on.
  • the above object in the speaker inspection apparatus for detecting a bad speaker by analyzing the characteristics of the rub (Bub & Buzz) for the frequency range of the speaker, connected to the speaker under test sound signal
  • a signal measuring terminal including a signal output terminal for outputting a signal input terminal connected to a microphone, and a sound output from the test target speaker;
  • the speaker abnormal sound test method in the above-described embodiment is achieved by the speaker inspection device comprising a; a built-in algorithm.
  • the signal measuring device and the terminal may be formed in one piece.
  • the present invention configured and acting as described above, there is an effect that the abnormal sound test for the speaker to be inspected can be performed quickly and accurately by simplifying the abnormal sound property of the speaker to improve readability.
  • FIG. 2 is a graph for explaining step-by-step speaker abnormal sound test method according to an embodiment of the present invention
  • FIG. 3 is a conceptual diagram illustrating a speaker test apparatus to which the step of FIG. 2 is applied.
  • an abnormal sound determination step of determining whether the corrected value exceeds the upper limit value as a normal speaker or a bad speaker in the speaker abnormal sound test method for analyzing the characteristic of the speaker (Rub & Buzz) for the frequency range of the speaker.
  • the present invention analyzes the Rub & Buzz characteristic of the frequency range of the speaker to detect a bad speaker.
  • the normal value display step, the inverted value display step, the inspection object value display step, the correction value display step, the upper limit value setting step, and the abnormal sound determination step It includes.
  • FIG. 2 is a graph for explaining a method for checking a speaker abnormal sound according to an embodiment of the present invention step by step. As in the embodiment shown in Fig. 2, it is easy to graph the values of each step of the present invention in analyzing the abnormal sound characteristic values according to the frequency range.
  • the abnormal sound characteristic of the normal speaker is measured and displayed as a positive value.
  • the normal speaker refers to a speaker that is determined to be the best sound output through a skilled expert in the art
  • the abnormal sound characteristic value of the normal speaker is not necessarily limited to a specific value.
  • the standard of a normal speaker may vary according to the type of speaker working environment.
  • the inversion value display step displays the abnormal sound characteristics of the normal speaker as a negative value. That is, as in the graph of S2 shown in Fig. 2, the graph of S1 is inverted to a negative value and the absolute value is the same.
  • the method may further include setting a reference graph having zero slope by adding a positive value of the normal value display step and a negative value of the inverted value display step. That is, the graph is flattened by replacing the abnormal sound characteristic value of the normal speaker with 0.
  • the test object value display step displays the abnormal sound characteristics of the test target speaker as a positive value.
  • the inspection target speaker refers to a speaker that is completed through a manufacturing process, and is a speaker that needs to check whether sound output is normal before being shipped as a product.
  • the correction value display step displays the corrected result value by adding the negative value of the inversion value display step and the positive value of the inspection object value display step.
  • the corrected result value is displayed on a reference graph having a slope of 0 by replacing the abnormal sound characteristic value of the normal speaker with 0. Therefore, the complicated graph values are omitted and only the range outside the normal loudspeaker range is displayed, making the graph simple and clear.
  • the upper limit is a value determined based on the numerical value of the degree of discomfort felt by the listener due to the abnormal sound of the speaker, and is not necessarily limited to a specific value. For example, an expensive high-end speaker is made for a user who is sensitive to abnormal sounds, so the upper limit value for judging bad speakers may be very small.
  • the abnormal sound determination step displays the correction value on the graph on which the upper limit value is set. That is, it can be seen that the upper limit value and the correction value are displayed on the reference graph. Accordingly, the operator or the computer determines whether the correction value exceeds the upper limit value to determine whether the speaker abnormal sound is normal.
  • the speaker inspection apparatus of the present invention analyzes the abnormal sound characteristics of the speaker's frequency range and detects a bad speaker.
  • the speaker test apparatus includes a signal measuring device 40 and a terminal 20.
  • the signal measuring device 40 is connected to the test target speaker 60 to output a sound signal 42 and the microphone 80 is connected to the sound output from the test target speaker 60 is input And a signal input terminal 44.
  • the signal measuring device 40 has a built-in input and output amplifier to test the speaker according to the sound input and output, the specific configuration is omitted because it corresponds to a known technique.
  • the terminal 20 has a built-in speaker abnormal sound test method in the embodiment described above as an algorithm.
  • a conventional computer may be used as the terminal, but any algorithm may be used as long as the algorithm is built-in and the screen can be output and the PDA can perform wired or wireless communication with the signal measuring device 40.
  • the signal measuring device 40 and the terminal 20 may be configured as a separate device and are integrally formed as one terminal without being connected to each other. That is, the signal measuring device 40 may be included in the terminal 20, or conversely, the terminal 20 may be included in the signal measuring device 40.
  • the present invention relates to a speaker audible test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker and a speaker inspection device using the same, which is widely used in the field of the device for testing the speaker Can be.

Abstract

The present invention relates to a speaker rub and buzz testing method for analyzing rub and buzz characteristics in the frequency range of a speaker to detect a defective speaker. According to the present invention, the speaker rub and buzz testing method comprises: a normal value indication step of indicating rub and buzz characteristics of a normal speaker by a positive value; an inverse value indication step of indicating rub and buzz characteristics of the normal speaker by a negative value; a test object value indication step of indicating rub and buzz characteristics of a speaker to be tested by a positive value; a corrected value indication step of indicating the resultant value obtained by adding the negative value indicated in the inverse value indication step and the positive value indicated in the test object value indication step and correcting the sum value; an upper bounding value set step of setting an upper bounding value of a predetermined range based on the rub and buzz characteristics of the normal speaker; and a rub and buzz determination step of determining a normal speaker or a defective speaker based on whether the corrected value exceeds the upper bounding value. Accordingly, the present invention simplifies rub and buzz characteristics of the normal speaker to improve readability, thus enabling rub and buzz testing on a speaker to be tested, to be quickly and accurately performed.

Description

스피커 이상음 검사방법 및 이를 이용한 스피커 검사장치Speaker audible test method and speaker inspection device using same
본 발명은 스피커 이상음 검사방법 및 이를 이용한 스피커 검사장치에 관한 것으로서, 더욱 상세하게는 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 이상음 검사방법 및 이를 이용한 스피커 검사장치에 관한 것이다.The present invention relates to a speaker abnormal sound test method and a speaker test apparatus using the same. More specifically, the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker and using the same The present invention relates to a speaker inspection apparatus.
스피커는 전기신호 형태의 음을 사람의 귀에 들리는 소리로 변환하는 장치로 전기신호를 진동판의 진동으로 바꾸어 공기에 소밀파를 발생시켜 음파를 복사한다.A speaker is a device that converts sound in the form of an electrical signal into a sound heard by a person's ear.
이러한 스피커는 진동판을 진동시켜 공기를 직접 진동시키는 콘 스피커 방식과, 진동을 혼(horn)으로 받아들여 음을 내보내는 혼 스피커 방식이 있다.Such a speaker has a cone speaker system for directly vibrating air by vibrating a diaphragm, and a horn speaker system for taking out vibrations as a horn and emitting sound.
그리고, 전기신호를 음파로 변환시키는 원리와 방법에 따라 동전형, 전자기형, 정전형, 유전체형, 자기왜형 등이 있다. 음악 재생용이나 음성용으로서는 성능이 좋은 동전형(다이내믹형)이 널리 쓰인다. 동전형은 영구자석의 자기장 내에 있는 보이스코일에 음성신호 전류를 흘리면 그 전류의 세기에 따라 기계적인 힘이 코일에 작용하여 운동을 일으키는 원리를 이용한 것이다. 전자기형은 영구자석 끝에 설치한 코일에 음성전류를 흘려 보내어 코일 사이에 있는 철편을 진동시키고 이 진동을 레버에 의해 진동판에 전하여 소리를 방사한다. 취급이 간단하므로 가정용 라디오에 많이 사용되었으나 고역특성이 나쁘고 일그러짐이 많아 점차 사용이 줄고 있다. 정전형은 고음용으로 사용되는 경우가 있고, 유전체형과 자기왜형은 가청주파수가 아닌 20kHz 이상의 초음파 영역에서 사용된다. 그리고 가청주파수용 스피커 중에서 특히 고역주파수대(10kHz 이상)용으로 사용하는 것을 트위터(tweeter)라고 하는데 혼형, 원뿔형, 종류가 있으며, 진동계의 무게가 작다.In addition, there are coin type, electromagnetic type, electrostatic type, dielectric type, magnetostriction, etc. according to the principle and method for converting an electrical signal into sound waves. Coin type (dynamic type) with good performance is widely used for music reproduction and voice. The coin type uses the principle that when a voice signal current flows to the voice coil in the magnetic field of the permanent magnet, a mechanical force acts on the coil according to the strength of the current to cause movement. The electromagnetic type sends a voice current to the coil installed at the end of the permanent magnet to vibrate the iron pieces between the coils, and transmits the vibration to the diaphragm by the lever to emit sound. Because of its simple handling, it has been widely used in home radios, but its high frequency characteristics are poor and distorted. The electrostatic type is sometimes used for high sound levels, and the dielectric type and magnetostriction are used in the ultrasonic region of 20 kHz or more rather than the audible frequency. Among the speakers for audible frequencies, especially those used for high frequency bands (10kHz and above) are called tweeters, which are mixed, conical, and low in weight.
상기한 스피커는 여러 공정을 거쳐 제조되는데, 보이스코일이나 프레임, 스피이더에서 종종 기계적 혹은 구조적 불량을 일으킨다. 제조 과정에서 불량이 발생한 스피커는 비선형인 임펄스(impulse)장의 비정상적인 이상음(Rub&Buzz)이 발생한다.The speaker is manufactured through various processes, and often causes mechanical or structural defects in voice coils, frames, and speeders. Loudspeakers that are defective in the manufacturing process generate abnormal Rub & Buzz of non-linear impulse field.
따라서, 스피커 제조 공정에서 이상음을 검사하는 과정은 매우 중요하다고 볼 수 있다. 해당 기술분야에서는 숙련된 기술차가 스피커의 출력음을 직접 들으면서 이상음을 검사하는 것에서 진화되어 최근에는 검사장비를 통해 스피커의 주파수 범위에 대한 이상음 특성을 도1과 같은 그래프로 보면서 스피커 이상음을 검사하였다.Therefore, the process of checking for abnormal sounds in the speaker manufacturing process is very important. In this technical field, an experienced technical vehicle has evolved from inspecting abnormal sounds while directly listening to the output sound of the speaker. Recently, the abnormal sound characteristics of the frequency range of the speaker through the inspection equipment are shown in the graph as shown in FIG. Inspected.
그러나, 스피커의 이상음 특성을 도1과 같은 그래프로 표현하면 주파수 범위에 따른 이상음 가변수치가 복잡해져 검사대상 스피커의 이상음이 불량 판정을 위한 기준값에서 벗어났는지 판단하기 어려워 검사시간이 지체될 뿐만 아니라 정확한 검사가 힘든 문제점이 있었다.However, if the abnormal sound characteristics of the speaker are expressed in the graph as shown in Fig. 1, the abnormal sound variable values according to the frequency range are complicated, and it is difficult to determine whether the abnormal sound of the speaker to be inspected is out of the reference value for the defect determination, which delays the inspection time. But the exact test was difficult.
따라서, 본 발명의 목적은, 스피커의 이상음 검사를 신속하면서도 정확하게 할 수 있는 스피커 이상음 검사방법 및 이를 이용한 스피커 검사장치를 제공하는 것이다.Accordingly, an object of the present invention is to provide a speaker abnormal sound test method and a speaker test apparatus using the same that can quickly and accurately test the abnormal sound of the speaker.
상기한 목적은, 본 발명의 실시예에 따라, 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 이상음 검사방법에 있어서, 정상 스피커의 이상음 특성을 양의 값으로 표시하는 정상값 표시단계와; 상기 정상 스피커의 이상음 특성을 음의 값으로 표시하는 반전값 표시단계와; 검사대상 스피커의 이상음 특성을 양의 값으로 표시하는 검사대상값 표시단계와; 상기 반전값 표시단계의 음의 값과 상기 검사대상값 표시단계의 양의 값을 더하여 보정된 결과값을 표시하는 보정값 표시단계와; 상기 정상 스피커의 이상음 특성을 기준으로 소정 범위의 상한값을 설정하는 상한값 설정단계; 및 상기 보정값이 상기 상한값을 초과하는지에 따라 정상 스피커 또는 불량 스피커로 판단하는 이상음 판단단계;를 포함하는 것을 특징으로 하는 스피커 이상음 검사방법에 의해 달성된다.The above object is, according to an embodiment of the present invention, in the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker, the abnormal sound characteristics of the normal speaker positive Displaying a normal value by a value; An inversion value displaying step of displaying the abnormal sound characteristic of the normal speaker as a negative value; An inspection object value display step of displaying an abnormal sound characteristic of the inspection object speaker as a positive value; A correction value display step of displaying a corrected result value by adding a negative value of the inversion value display step and a positive value of the inspection object value display step; An upper limit value setting step of setting an upper limit value of a predetermined range based on the abnormal sound characteristic of the normal speaker; And an abnormal sound determination step of determining whether the corrected value exceeds the upper limit value as a normal speaker or a bad speaker.
상기 각 단계의 값들을 그래프로 표시하는 것이 바람직하다.It is preferable to display the values of each step in a graph.
여기서, 상기 정상값 표시단계의 양의 값과 상기 반전값 표시단계의 음의 값을 더하여 기울기가 0인 기준 그래프를 설정하는 단계를 더 포함할 수 있으며, 상기 상한값과 상기 보정값을 상기 기준 그래프에 표시하여 정상 스피커 또는 불량 스피커를 판단하는 것을 특징으로 한다.The method may further include setting a reference graph having zero slope by adding a positive value of the normal value display step and a negative value of the inverted value display step, wherein the upper limit value and the correction value are set to the reference graph. It is characterized by determining the normal speaker or bad speaker by displaying on.
한편, 상기한 목적은, 본 발명의 다른 실시예에 따라, 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 검사장치에 있어서, 검사대상 스피커와 연결되어 사운드 신호를 출력하는 신호출력단자와, 마이크와 연결되어 상기 검사대상 스피커에서 출력되는 사운드가 입력되는 신호입력단자를 포함하는 신호측정기; 및 앞서 설명한 실시예에서의 스피커 이상음 검사방법이 알고리즘으로 내장된 단말기;를 포함하는 것을 특징으로 하는 스피커 검사장치에 의해 달성된다. 여기서, 상기 신호측정기와 상기 단말기는 일체형으로 이루어질 수 있다.On the other hand, the above object, according to another embodiment of the present invention, in the speaker inspection apparatus for detecting a bad speaker by analyzing the characteristics of the rub (Bub & Buzz) for the frequency range of the speaker, connected to the speaker under test sound signal A signal measuring terminal including a signal output terminal for outputting a signal input terminal connected to a microphone, and a sound output from the test target speaker; And the speaker abnormal sound test method in the above-described embodiment is achieved by the speaker inspection device comprising a; a built-in algorithm. Here, the signal measuring device and the terminal may be formed in one piece.
상기한 바와 같은 방법으로 구성되고 작용하는 본 발명에 의하면, 스피커의 이상음 특성을 단순화하여 가독성을 향상시킴으로써 검사대상 스피커에 대한 이상음 검사를 빠르고 정확하게 수행할 수 있는 효과가 있다.According to the present invention configured and acting as described above, there is an effect that the abnormal sound test for the speaker to be inspected can be performed quickly and accurately by simplifying the abnormal sound property of the speaker to improve readability.
도1은 스피커 이상음 검사를 위한 종래의 그래프이고,1 is a conventional graph for a speaker abnormal sound test,
도2는 본 발명의 실시예에 따른 스피커 이상음 검사방법을 단계별로 설명하기 위한 그래프이고, 2 is a graph for explaining step-by-step speaker abnormal sound test method according to an embodiment of the present invention,
도3은 도2의 단계가 적용된 스피커 검사장치를 도시하는 개념도이다.3 is a conceptual diagram illustrating a speaker test apparatus to which the step of FIG. 2 is applied.
본 발명에 의하면, 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 이상음 검사방법에 있어서, 정상 스피커의 이상음 특성을 양의 값으로 표시하는 정상값 표시단계와; 상기 정상 스피커의 이상음 특성을 음의 값으로 표시하는 반전값 표시단계와; 검사대상 스피커의 이상음 특성을 양의 값으로 표시하는 검사대상값 표시단계와; 상기 반전값 표시단계의 음의 값과 상기 검사대상값 표시단계의 양의 값을 더하여 보정된 결과값을 표시하는 보정값 표시단계와; 상기 정상 스피커의 이상음 특성을 기준으로 소정 범위의 상한값을 설정하는 상한값 설정단계; 및 상기 보정값이 상기 상한값을 초과하는지에 따라 정상 스피커 또는 불량 스피커로 판단하는 이상음 판단단계;를 포함하는 것을 특징으로 하는 스피커 이상음 검사방법을 제공한다. According to the present invention, in the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristic of the speaker (Rub & Buzz) for the frequency range of the speaker, the normal value display step of displaying the abnormal sound characteristics of the normal speaker as a positive value Wow; An inversion value displaying step of displaying the abnormal sound characteristic of the normal speaker as a negative value; An inspection object value display step of displaying an abnormal sound characteristic of the inspection object speaker as a positive value; A correction value display step of displaying a corrected result value by adding a negative value of the inversion value display step and a positive value of the inspection object value display step; An upper limit value setting step of setting an upper limit value of a predetermined range based on the abnormal sound characteristic of the normal speaker; And an abnormal sound determination step of determining whether the corrected value exceeds the upper limit value as a normal speaker or a bad speaker.
이하, 첨부된 도면들을 참조하면서 본 발명의 바람직한 실시예에 대해 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출한다. 실시예에 따른 본 발명은, 도2에 도시된 바와 같이, 정상값 표시단계와, 반전값 표시단계와, 검사대상값 표시단계와, 보정값 표시단계와, 상한값 설정단계와, 이상음 판단단계를 포함한다.The present invention analyzes the Rub & Buzz characteristic of the frequency range of the speaker to detect a bad speaker. According to an embodiment of the present invention, as shown in FIG. 2, the normal value display step, the inverted value display step, the inspection object value display step, the correction value display step, the upper limit value setting step, and the abnormal sound determination step It includes.
도2는 본 발명의 실시예에 따른 스피커 이상음 검사방법을 단계별로 설명하기 위한 그래프이다. 도2에 도시된 실시예와 같이, 본 발명의 각 단계의 값들을 그래프로 표시하는 것이 주파수 범위에 따른 이상음 특성 값들을 분석하는데 용이하다.2 is a graph for explaining a method for checking a speaker abnormal sound according to an embodiment of the present invention step by step. As in the embodiment shown in Fig. 2, it is easy to graph the values of each step of the present invention in analyzing the abnormal sound characteristic values according to the frequency range.
먼저, 정상값 표시단계는 정상 스피커의 이상음 특성을 측정하여 양의 값으로 표시한다. 여기서, 정상 스피커라 함은 해당 기술분야의 숙련된 전문가를 통해 최적의 사운드 출력이라고 판단된 스피커를 말하는 것으로, 정상 스피커의 이상음 특성값이 특정 수치로 반드시 한정되는 것은 아니다. 예를 들어, 스피커의 종류 작업환경에 따라 정상 스피커의 기준은 달라질 수 있다.First, in the normal value display step, the abnormal sound characteristic of the normal speaker is measured and displayed as a positive value. Here, the normal speaker refers to a speaker that is determined to be the best sound output through a skilled expert in the art, the abnormal sound characteristic value of the normal speaker is not necessarily limited to a specific value. For example, the standard of a normal speaker may vary according to the type of speaker working environment.
다음으로, 반전값 표시단계는 정상 스피커의 이상음 특성을 음의 값으로 표시한다. 즉, 도2에 도시된 S2의 그래프와 같이 S1의 그래프를 음의 값으로 반전시킨 것으로 절대값은 동일하다.Next, the inversion value display step displays the abnormal sound characteristics of the normal speaker as a negative value. That is, as in the graph of S2 shown in Fig. 2, the graph of S1 is inverted to a negative value and the absolute value is the same.
여기서, 상기 정상값 표시단계의 양의 값과 상기 반전값 표시단계의 음의 값을 더하여 기울기가 0인 기준 그래프를 설정하는 단계를 더 포함할 수 있다. 즉, 정상 스피커의 이상음 특성값을 0으로 치환하여 그래프를 평탄하게 표현한다. The method may further include setting a reference graph having zero slope by adding a positive value of the normal value display step and a negative value of the inverted value display step. That is, the graph is flattened by replacing the abnormal sound characteristic value of the normal speaker with 0.
다음으로, 검사대상값 표시단계는 검사대상 스피커의 이상음 특성을 양의 값으로 표시한다. 여기서, 검사대상 스피커라 함은 제조 공정을 통해 완성된 스피커를 말하는 것으로, 상품으로 출하되기 전에 사운드 출력의 정상 여부를 검사해야하는 스피커이다.Next, the test object value display step displays the abnormal sound characteristics of the test target speaker as a positive value. Here, the inspection target speaker refers to a speaker that is completed through a manufacturing process, and is a speaker that needs to check whether sound output is normal before being shipped as a product.
다음으로, 보정값 표시단계는 도2의 S4와 같이, 상기 반전값 표시단계의 음의 값과 상기 검사대상값 표시단계의 양의 값을 더하여 보정된 결과값을 표시한다. 여기서, 보정된 결과값은 앞서 정상 스피커의 이상음 특성값을 0으로 치환하여 기울기가 0인 기준 그래프상에 표시하게 된다. 따라서 복잡한 그래프 수치는 생략되고 정상 스피커의 이상음 범위를 벗어난 범위만 표시되어 그래프가 간단 명료해진다.Next, as shown in S4 of FIG. 2, the correction value display step displays the corrected result value by adding the negative value of the inversion value display step and the positive value of the inspection object value display step. Here, the corrected result value is displayed on a reference graph having a slope of 0 by replacing the abnormal sound characteristic value of the normal speaker with 0. Therefore, the complicated graph values are omitted and only the range outside the normal loudspeaker range is displayed, making the graph simple and clear.
다음으로, 상한값 설정단계는 도2의 S5와 같이, 정상 스피커의 이상음 특성을 기준으로 소정 범위의 상한값을 설정한다. 여기서, 상한값은 스피커의 이상음에 의해 청취자가 느끼는 불쾌함의 정도를 수치화하여 기준으로 정한 값으로, 특정 수치로 반드시 한정되지는 않는다. 예를 들어, 고가의 고급형 스피커의 경우 이상음에 예민한 사용자를 위해 제작되는 것이므로 불량 스피커 판단을 위한 상한값이 아주 작은 수치일 수 있으나, 저가의 보급형 스피커의 경우에는 상한값을 다소 높게 정하여도 무방하다.Next, in the upper limit setting step, as shown in S5 of FIG. Here, the upper limit is a value determined based on the numerical value of the degree of discomfort felt by the listener due to the abnormal sound of the speaker, and is not necessarily limited to a specific value. For example, an expensive high-end speaker is made for a user who is sensitive to abnormal sounds, so the upper limit value for judging bad speakers may be very small.
다음으로, 이상음 판단단계는 도2의 S6과 같이, 상한값이 설정된 그래프상에 보정값을 표시한다. 즉, 상기 상한값과 상기 보정값을 상기 기준 그래프상에 표시한다고 볼 수 있다. 이에 따라, 작업자 또는 컴퓨터가 상기 보정값이 상기 상한값을 초과하는지를 판단하여 스피커 이상음의 정상 여부를 판단하게 된다.Next, the abnormal sound determination step, as shown in S6 of Fig. 2, displays the correction value on the graph on which the upper limit value is set. That is, it can be seen that the upper limit value and the correction value are displayed on the reference graph. Accordingly, the operator or the computer determines whether the correction value exceeds the upper limit value to determine whether the speaker abnormal sound is normal.
이하, 도3을 참조하여 본 발명의 다른 실시예에 따른 스피커 검사장치를 설명하기로 한다.Hereinafter, a speaker test apparatus according to another exemplary embodiment of the present invention will be described with reference to FIG. 3.
본 발명의 스피커 검사장치는 스피커의 주파수 범위에 대한 이상음 특성을 분석하여 불량 스피커를 검출하는 것으로, 도3에 도시된 바와 같이, 크게 신호측정기(40)와 단말기(20)를 포함한다.The speaker inspection apparatus of the present invention analyzes the abnormal sound characteristics of the speaker's frequency range and detects a bad speaker. As shown in FIG. 3, the speaker test apparatus includes a signal measuring device 40 and a terminal 20.
먼저, 신호측정기(40)는 검사대상 스피커(60)와 연결되어 사운드 신호를 출력하는 신호출력단자(42)와, 마이크(80)와 연결되어 상기 검사대상 스피커(60)에서 출력되는 사운드가 입력되는 신호입력단자(44)를 포함한다. 이러한 신호측정기(40)는 입출력 엠프를 내장하여 사운드 입출력에 따라 스피커를 검사하는 것으로 구체적인 구성은 이미 공지된 기술에 해당하므로 생략하도록 한다.First, the signal measuring device 40 is connected to the test target speaker 60 to output a sound signal 42 and the microphone 80 is connected to the sound output from the test target speaker 60 is input And a signal input terminal 44. The signal measuring device 40 has a built-in input and output amplifier to test the speaker according to the sound input and output, the specific configuration is omitted because it corresponds to a known technique.
다음으로, 단말기(20)는 앞서 설명한 실시예에서의 스피커 이상음 검사방법이 알고리즘으로 내장된다. 이러한 단말기로는 통상의 컴퓨터가 사용될 수 있으나, 상기 알고리즘이 내장되어 화면 출력 가능하고 상기 신호측정기(40)와 유선 또는 무선 통신 가능한 PDA와 같은 것이라면 어떠한 것이 사용되어도 무방하다.Next, the terminal 20 has a built-in speaker abnormal sound test method in the embodiment described above as an algorithm. A conventional computer may be used as the terminal, but any algorithm may be used as long as the algorithm is built-in and the screen can be output and the PDA can perform wired or wireless communication with the signal measuring device 40.
또한, 상기 신호측정기(40)와 상기 단말기(20)는 별도의 기기로 구성되어 통신 연결되지 않고 하나의 단말기로 일체형으로 이루어질 수 있다. 즉, 상기 신호측정기(40)가 상기 단말기(20)에 포함되거나, 반대로 상기 단말기(20)가 상기 신호측정기(40)에 포함될 수 있다.In addition, the signal measuring device 40 and the terminal 20 may be configured as a separate device and are integrally formed as one terminal without being connected to each other. That is, the signal measuring device 40 may be included in the terminal 20, or conversely, the terminal 20 may be included in the signal measuring device 40.
지금까지 설명한 본 발명에 따르면, 스피커의 이상음 특성을 나타내는 기존의 복잡한 그래프를 단순화하여 가독성을 향상시킴으로써 검사대상 스피커에 대한 이상음 검사를 빠르고 정확하게 수행할 수 있다.According to the present invention described so far, it is possible to perform the abnormal sound test for the speaker to be inspected quickly and accurately by simplifying the existing complicated graph representing the abnormal sound characteristic of the speaker to improve readability.
전술한 내용은 후술할 발명의 청구범위를 더욱 잘 이해할 수 있도록 본 발명의 특징과 기술적 장점을 다소 폭넓게 상술하였다. 상술한 실시예들은 해당 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술적 사상의 범위에서 다양한 수정 및 변경이 가능할 것이다. 이러한 다양한 수정 및 변경 또한 본 발명의 기술적 사상의 범위 내라면 하기에서 기술되는 본 발명의 청구범위에 속한다 할 것이다.The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the claims that follow may be better understood. Embodiments described above may be variously modified and changed by those skilled in the art within the scope of the technical idea of the present invention. Such various modifications and changes will also fall within the scope of the claims as set forth below within the scope of the spirit of the present invention.
본 발명은 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 이상음 검사방법 및 이를 이용한 스피커 검사장치에 관한 것으로서, 스피커를 검사하는 장치 등의 분야에 광범위하게 사용될 수 있다. The present invention relates to a speaker audible test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker and a speaker inspection device using the same, which is widely used in the field of the device for testing the speaker Can be.

Claims (5)

  1. 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 이상음 검사방법에 있어서,In the speaker abnormal sound test method for detecting a bad speaker by analyzing the characteristics of the speaker (Rub & Buzz) for the frequency range of the speaker,
    정상 스피커의 이상음 특성을 양의 값으로 표시하는 정상값 표시단계;A normal value displaying step of displaying the abnormal sound characteristic of the normal speaker as a positive value;
    상기 정상 스피커의 이상음 특성을 음의 값으로 표시하는 반전값 표시단계;An inversion value displaying step of displaying the abnormal sound characteristics of the normal speaker as a negative value;
    검사대상 스피커의 이상음 특성을 양의 값으로 표시하는 검사대상값 표시단계;An inspection object value displaying step of displaying the abnormal sound characteristic of the inspection object speaker as a positive value;
    상기 반전값 표시단계의 음의 값과 상기 검사대상값 표시단계의 양의 값을 더하여 보정된 결과값을 표시하는 보정값 표시단계;A correction value display step of displaying a corrected result value by adding a negative value of the inversion value display step and a positive value of the inspection object value display step;
    상기 정상 스피커의 이상음 특성을 기준으로 소정 범위의 상한값을 설정하는 상한값 설정단계; 및An upper limit value setting step of setting an upper limit value of a predetermined range based on the abnormal sound characteristic of the normal speaker; And
    상기 보정값이 상기 상한값을 초과하는지에 따라 정상 스피커 또는 불량 스피커로 판단하는 이상음 판단단계;An abnormal sound determination step of determining as a normal speaker or a bad speaker depending on whether the correction value exceeds the upper limit value;
    를 포함하는 것을 특징으로 하는 스피커 이상음 검사방법.Speaker abnormal sound inspection method comprising a.
  2. 제1항에 있어서,The method of claim 1,
    상기 각 단계의 값들을 그래프로 표시하는 것을 특징으로 하는 스피커 이상음 검사방법.Speaker audible test method characterized in that the display of the values of each step in a graph.
  3. 제2항에 있어서,The method of claim 2,
    상기 정상값 표시단계의 양의 값과 상기 반전값 표시단계의 음의 값을 더하여 기울기가 0인 기준 그래프를 설정하는 단계를 더 포함하며, Setting a reference graph having a zero slope by adding a positive value of the normal value display step and a negative value of the inverted value display step;
    상기 상한값과 상기 보정값을 상기 기준 그래프에 표시하여 정상 스피커 또는 불량 스피커를 판단하는 것을 특징으로 하는 스피커 이상음 검사방법.And displaying the upper limit value and the correction value on the reference graph to determine a normal speaker or a bad speaker.
  4. 스피커의 주파수 범위에 대한 이상음(Rub&Buzz) 특성을 분석하여 불량 스피커를 검출하는 스피커 검사장치에 있어서,In the speaker inspection device for detecting a bad speaker by analyzing the characteristics of the Rub & Buzz over the frequency range of the speaker,
    검사대상 스피커와 연결되어 사운드 신호를 출력하는 신호출력단자와, 마이크와 연결되어 상기 검사대상 스피커에서 출력되는 사운드가 입력되는 신호입력단자를 포함하는 신호측정기; 및A signal measuring device including a signal output terminal connected to a speaker to be output and outputting a sound signal, and a signal input terminal connected to a microphone and to which sound output from the speaker to be input is input; And
    제1항 내지 제3항 중 어느 한 항에 따른 스피커 이상음 검사방법이 알고리즘으로 내장된 단말기;Claims 1 to 3, wherein the speaker abnormal sound test method according to any one of the built-in algorithm;
    를 포함하는 것을 특징으로 하는 스피커 검사장치.Speaker inspection device comprising a.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 신호측정기와 상기 단말기는 일체형으로 이루어지는 것을 특징으로 하는 스피커 검사장치.The signal measuring device and the terminal is a speaker inspection device, characterized in that consisting of one.
PCT/KR2012/010825 2012-09-21 2012-12-13 Speaker rub and buzz testing method and speaker testing apparatus using same WO2014046342A1 (en)

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Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN103747408A (en) * 2013-12-30 2014-04-23 深圳市广和通实业发展有限公司 Audio performance test system and method
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07192183A (en) * 1993-12-27 1995-07-28 Nec Corp Abnormal sound inspection device
KR20030069255A (en) * 2002-02-19 2003-08-27 삼성전자주식회사 Checking sound quality and characcteristic of speaker system and method therefor
JP2006033734A (en) * 2004-07-21 2006-02-02 Sanyo Electric Co Ltd Sound inspection method and device of electric product
US20060165239A1 (en) * 2002-11-22 2006-07-27 Humboldt-Universitat Zu Berlin Method for determining acoustic features of acoustic signals for the analysis of unknown acoustic signals and for modifying sound generation
JP2007306410A (en) * 2006-05-12 2007-11-22 Fujitsu Ltd Method, program and system for inspecting sound reproduction device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4160437B2 (en) * 2003-04-15 2008-10-01 アルパイン株式会社 AUDIO DEVICE, OFFSET VOLTAGE DETECTION METHOD, PROGRAM THEREOF, AND RECORDING MEDIUM CONTAINING THE PROGRAM
KR20050073758A (en) * 2004-01-10 2005-07-18 주식회사 팬택앤큐리텔 Method for measuring performance of analog apparatus in mobile communication terminal
KR20050091192A (en) * 2004-03-11 2005-09-15 주식회사 이디교정기술원 Method and the device that measure specisl quality of speaker
CN101115329A (en) * 2006-07-28 2008-01-30 天津科技大学 Time frequency analysis based loudspeaker noise online detecting instrument
KR100967695B1 (en) * 2008-07-31 2010-07-07 주식회사 신아정밀 Apparatus for inspecting speaker for cell phone
KR101110223B1 (en) * 2009-07-22 2012-02-16 (주)에스엠인스트루먼트 Apparatus and method for inspecting operation of speaker
CN101998221A (en) * 2009-08-14 2011-03-30 天津三星电子有限公司 Loudspeaker sound testing method and device
US9124219B2 (en) * 2010-07-01 2015-09-01 Conexant Systems, Inc. Audio driver system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07192183A (en) * 1993-12-27 1995-07-28 Nec Corp Abnormal sound inspection device
KR20030069255A (en) * 2002-02-19 2003-08-27 삼성전자주식회사 Checking sound quality and characcteristic of speaker system and method therefor
US20060165239A1 (en) * 2002-11-22 2006-07-27 Humboldt-Universitat Zu Berlin Method for determining acoustic features of acoustic signals for the analysis of unknown acoustic signals and for modifying sound generation
JP2006033734A (en) * 2004-07-21 2006-02-02 Sanyo Electric Co Ltd Sound inspection method and device of electric product
JP2007306410A (en) * 2006-05-12 2007-11-22 Fujitsu Ltd Method, program and system for inspecting sound reproduction device

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