TWI384890B - A performance measurement method and system for microspeakers - Google Patents
A performance measurement method and system for microspeakers Download PDFInfo
- Publication number
- TWI384890B TWI384890B TW97142651A TW97142651A TWI384890B TW I384890 B TWI384890 B TW I384890B TW 97142651 A TW97142651 A TW 97142651A TW 97142651 A TW97142651 A TW 97142651A TW I384890 B TWI384890 B TW I384890B
- Authority
- TW
- Taiwan
- Prior art keywords
- performance evaluation
- evaluation data
- speaker
- micro
- signal analyzer
- Prior art date
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
本發明是有關於一種性能評估方法及其系統，特別是指一種針對微型揚聲器之各主要特性的性能量測及評估的方法及其相關系統。The present invention relates to a performance evaluation method and system thereof, and more particularly to a method and related system for measuring and evaluating sexual energy for each of the main characteristics of a microspeaker.
近年來，微型揚聲器(micro-speaker)被廣泛應用在電腦、電器或其他電子相關用品上，如個人數位助理(Personal Digital Assistants，PDA)、數位照相機、數位攝影機、行動電話及音樂隨身播放器等，由此可知，微型揚聲器已儼然於電腦、電器或其他電子周邊產品上佔有其不可或缺的重要地位。因此，各相關此類微型揚聲器的產品研發技術亦孕育而生，逐漸成為各相關學、業界之矚目焦點，如美國專利公告號6400825之「MICROSPEAKER」與美國專利公告號6690809之「MICROSPEAKER」等，皆針對傳統之微型揚聲器提出許多出色的改進構造。In recent years, micro-speakers have been widely used in computers, electrical appliances or other electronic related products, such as Personal Digital Assistants (PDAs), digital cameras, digital cameras, mobile phones, and music portable players. It can be seen that micro-speakers have become an indispensable important place in computers, electrical appliances or other electronic peripheral products. Therefore, product development technologies for such micro-speakers have also emerged, and have gradually become the focus of attention in various related fields and industries, such as "MICROSPEAKER" in US Patent Publication No. 6400825 and "MICROSPEAKER" in US Patent Publication No. 6690809. Many outstanding improvements have been made to traditional microspeakers.
也因此，為了使微型揚聲器達到更佳的效能呈現、為了偵測出微型揚聲器之瑕疵處以利改進，以及為了降低微型揚聲器雜訊的產生等因素，以更進一步地提高微型揚聲器之品質；所以，如何對此微型揚聲器之表現性能的量測便是一重要課題，雖然，目前有一些相關學業界之標準文件，如由聲音工程協會(Audio Engineering Society)所提出的「AES Information Document for digital audio-Personal computer audio quality measurements」之量測標準，但是， 此僅僅是用來規範一般揚聲器(即大型揚聲器)性能表現的量測方法，且此種量測方法往往不適用於微型揚聲器。Therefore, in order to achieve better performance of the micro-speaker, to improve the advantages of the micro-speaker, and to reduce the noise of the micro-speaker, the quality of the micro-speaker is further improved; How to measure the performance of this micro-speaker is an important issue, although there are some standard documents related to the industry, such as the "AES Information Document for digital audio-" proposed by the Audio Engineering Society. Personal computer audio quality measurements", however, This is only a measurement method used to regulate the performance of a general speaker (ie, a large speaker), and such a measurement method is often not suitable for a microspeaker.
因此，如何提出一種針對微型揚聲器來進行其較完整的表現性能量測方法及其相關操作系統，便成為相關業者所欲努力研究的方向。Therefore, how to propose a more complete performance energy measurement method and related operating system for micro-speakers has become the direction that the relevant industry is trying to study.
因此，本發明之目的，即在提供一種針對微型揚聲器性能評估的系統。Accordingly, it is an object of the present invention to provide a system for performance evaluation of microspeakers.
於是，本發明微型揚聲器性能評估系統，包含一訊號分析儀、一處理運算模組、一第一收音器、複數第二收音器、一第三收音器、一訊號產生器、一轉盤、一三通接頭、一雷射量測裝置、一障板、一第一微型揚聲器、一第二微型揚聲器、一第三微型揚聲器、一第四微型揚聲器、一第五微型揚聲器，及一第六微型揚聲器。Therefore, the microspeaker performance evaluation system of the present invention comprises a signal analyzer, a processing computing module, a first sound receiver, a plurality of second sound receivers, a third sound receiver, a signal generator, a turntable, and a third a connector, a laser measuring device, a baffle, a first micro speaker, a second micro speaker, a third micro speaker, a fourth micro speaker, a fifth micro speaker, and a sixth micro speaker .
該訊號分析儀具有一第一通道與一第二通道。The signal analyzer has a first channel and a second channel.
該處理運算模組與該訊號分析儀相連接，且具有進行一組感度定義函式、一諧波函式、一電功率函式、一組互調波失真函式與四則運算之運算功能。The processing module is connected to the signal analyzer, and has a computing function of performing a set of sensitivity defining function, a harmonic function, an electric power function, a set of intermodulation wave distortion function and four arithmetic operations.
該第一收音器、該等第二收音器與該第三收音器分別與該訊號分析儀相連接。The first sound receiver, the second sound receivers and the third sound receiver are respectively connected to the signal analyzer.
該訊號產生器具有輸出一電壓之功能。The signal generator has a function of outputting a voltage.
該轉盤可繞其軸心轉動。The turntable is rotatable about its axis.
該三通接頭具有一連接端、一正極端與一負極端，且該連接端連接於該訊號分析儀之第一通道。The three-way connector has a connecting end, a positive end and a negative end, and the connecting end is connected to the first channel of the signal analyzer.
該雷射量測裝置與該訊號分析儀相連並可發出雷射光。The laser measuring device is coupled to the signal analyzer and emits laser light.
該障板設立於距離該第一收音器一第一固定距離處。The baffle is set at a first fixed distance from the first sound receiver.
該第一微型揚聲器與該訊號分析儀相連且包括一電阻與一蜂鳴器，並可藉由該訊號產生器所輸入之電壓驅動，當該三通接頭之正極連接該第一微型揚聲器內之蜂鳴器，而其負極端先經由該第一微型揚聲器之電阻後再連通至該蜂鳴器時，再運用該訊號分析儀及該處理運算模組之處理，產生一阻抗評估數據。The first microspeaker is connected to the signal analyzer and includes a resistor and a buzzer, and is driven by a voltage input by the signal generator. When the anode of the three-way connector is connected to the first micro speaker The buzzer, and the negative terminal is first connected to the buzzer through the resistance of the first micro-speaker, and then the signal analyzer and the processing module are used to generate an impedance evaluation data.
該第二微型揚聲器與該訊號分析儀相連且包括至少一具有一組量測點之振膜，並可藉由該訊號產生器所輸入之電壓驅動，當該雷射量測裝置對該振膜進行量測時，再運用該訊號分析儀之處理，產生一振膜速度評估數據，而當該雷射量測裝置對該振膜上之各量測點進行振速量測，並將該第二微型揚聲器進行水平方向之移動，再配合該訊號分析儀及該處理運算模組之處理，產生一振型性能評估數據。The second microspeaker is connected to the signal analyzer and includes at least one diaphragm having a set of measuring points, and is driven by a voltage input by the signal generator, when the laser measuring device is used for the diaphragm When measuring, the signal analyzer is used to generate a diaphragm velocity evaluation data, and when the laser measuring device performs the vibration velocity measurement on each measuring point on the diaphragm, and the first The second microspeaker moves in the horizontal direction, and then cooperates with the signal analyzer and the processing module to generate a vibration mode performance evaluation data.
該第三微型揚聲器設置於該障板上，且與該訊號分析儀相連並可藉由該訊號產生器所輸入之電壓驅動，當利用該第一收音器對該第三微型揚聲器測量，並藉由該訊號分析儀之處理，產生一聲壓性能評估數據、一聲壓值與一聲壓位準，當利用該處理運算模組接收該聲壓值及該聲壓位準後，經運算處理產生一感度性能評估數據，當該處理運算模組再接收一單頻弦波訊號之輸入時，於處理後產生一 總諧波失真性能評估數據。The third micro-speaker is disposed on the baffle and connected to the signal analyzer and can be driven by the voltage input by the signal generator, when the first micro-speaker is measured and borrowed by the first microphone The sound signal performance evaluation data, a sound pressure value and a sound pressure level are generated by the signal analyzer, and when the sound pressure value and the sound pressure level are received by the processing module, the operation is processed. Generating a sensitivity performance evaluation data, when the processing module receives an input of a single-frequency sine wave signal, generating a Total harmonic distortion performance evaluation data.
該第四微型揚聲器設置於一假想半球體之球心上，且與該訊號分析儀相連並可藉由該訊號產生器所輸入之電壓驅動，當透過置於該假想半球體球面之複數點上的該等第二收音器，對該第四微型揚聲器進行量測，並配合該訊號分析儀及該處理運算模組之處理後，產生一效率性能評估數據。The fourth microspeaker is disposed on a center of an imaginary hemisphere and is connected to the signal analyzer and can be driven by a voltage input by the signal generator when passing through a plurality of points placed on the spherical surface of the imaginary hemisphere The second microphones measure the fourth micro-speaker and cooperate with the signal analyzer and the processing module to generate an efficiency performance evaluation data.
該第五微型揚聲器設置於該轉盤上，且與該訊號分析儀相連並可藉由該訊號產生器所輸入之電壓驅動，當轉動該轉盤上之第五微型揚聲器，利用設置於距離該第五微型揚聲器一第二固定距離之第三收音器進行量測，再運用該訊號分析儀及該處理運算模組之處理，產生一指向性性能評估數據。The fifth micro-speaker is disposed on the turntable and connected to the signal analyzer and can be driven by the voltage input by the signal generator. When the fifth micro-speaker on the turntable is rotated, the fifth micro-speaker is disposed at a distance from the fifth The micro-speaker is measured by a third sound receiver of a second fixed distance, and then processed by the signal analyzer and the processing module to generate a directional performance evaluation data.
該第六微型揚聲器與該訊號分析儀相連並可藉由該訊號產生器所輸入之電壓驅動，當利用該訊號產生器輸入二分別具有一差異性質之單頻弦波訊號至該第六微型揚聲器時，再運用該訊號分析儀及該處理運算模組之處理，產生一互調波失真性能評估數據。The sixth microspeaker is connected to the signal analyzer and can be driven by the voltage input by the signal generator. When the signal generator inputs two single frequency sine wave signals respectively having a difference property to the sixth micro speaker At the same time, the signal analyzer and the processing module are used to generate an intermodulation distortion performance evaluation data.
此外，本發明之另一目的，即在提供一種針對微型揚聲器性能之完整評估方法。Furthermore, it is another object of the present invention to provide a complete evaluation method for microspeaker performance.
於是，本發明微型揚聲器性能評估方法，包含以下步驟：(a)藉由與一訊號分析儀相連之一已驅動的第一微型揚聲器內的一電阻所發出之一電壓訊號進行量測，並產生一 阻抗評估數據。Therefore, the method for evaluating the performance of the microspeaker of the present invention comprises the steps of: (a) measuring and generating a voltage signal emitted by a resistor in a driven first microspeaker connected to a signal analyzer; One Impedance evaluation data.
(b)運用一與該訊號分析儀相連之雷射量測裝置，對一已驅動且與該訊號分析儀相連的第二微型揚聲器上之至少一振膜進行量測，產生一振膜速度評估數據，再於該振膜上規劃出一組量測點及各量測點間之量測間隔，並將該第二微型揚聲器進行水平方向之移動，再藉由該雷射量測裝置依序量測該組量測點之振速，並配合該訊號分析儀的分析得出每一量測點之一輸出速度及一輸入電壓間的一頻率響應，再藉由擷取各量測點之頻率響應，產生出一振型性能評估數據。(b) utilizing a laser measuring device coupled to the signal analyzer to measure at least one diaphragm on a second microspeaker that is driven and coupled to the signal analyzer to produce a diaphragm velocity assessment Data, and then planning a set of measuring points and measuring intervals between the measuring points on the diaphragm, and moving the second micro-speaker in a horizontal direction, and then sequentially passing the laser measuring device Measuring the vibration velocity of the set of measurement points, and analyzing the signal analyzer to obtain a frequency response between one output speed of each measurement point and an input voltage, and then by taking each measurement point The frequency response produces a vibration mode performance evaluation data.
(c)將一已驅動且與該訊號分析儀相連的第三微型揚聲器固定於一障板上，並藉由距離該第三微型揚聲器一第一固定距離且與該訊號分析儀相連之一第一收音器來進行量測，再利用該訊號分析儀產生出一聲壓值、一聲壓性能評估數據與一聲壓位準，並透過該聲壓位準與一組感度定義函式求得一感度性能評估數據，且再配合一單頻弦波訊號之輸入與一諧波函式之運算，得出一總諧波失真性能評估數據。(c) fixing a third microspeaker that is driven and connected to the signal analyzer to a baffle and by a first fixed distance from the third microspeaker and connected to the signal analyzer A sounder is used for measuring, and then the signal analyzer is used to generate a sound pressure value, a sound pressure performance evaluation data and a sound pressure level, and the sound pressure level and a set of sensitivity definition functions are obtained. A sensitivity performance evaluation data, and together with the input of a single frequency sine wave signal and the operation of a harmonic function, a total harmonic distortion performance evaluation data is obtained.
(d)設置一已驅動且與該訊號分析儀相連的第四微型揚聲器於一假想半球體之球心上，透過與該訊號分析儀相連且置於該假想半球體球面之複數點上的複數第二收音器，對該第四微型揚聲器進行量測，使得該訊號分析儀產生相對應之聲功率值，並利用一電功率函式求出該第四微型揚聲器之電功率值，再藉由計算其聲功率值與電功率之比例 ，而得出一效率性能評估數據。(d) arranging a fourth microspeaker that is driven and connected to the signal analyzer on a center of an imaginary hemisphere through a plurality of points connected to the signal analyzer and placed at a plurality of points of the imaginary hemisphere sphere a second sound receiver, the fourth micro-speaker is measured, so that the signal analyzer generates a corresponding sound power value, and an electric power function is used to determine the electric power value of the fourth micro-speaker, and then calculating Ratio of sound power value to electric power And get an efficiency performance evaluation data.
(e)將一已驅動且與該訊號分析儀相連的第五微型揚聲器設置於一轉盤上並轉動，且將一與該訊號分析儀相連的第三收音器設置於距離該第五微型揚聲器一第二固定距離，再利用該訊號分析儀對該第五微型揚聲器進行一聲壓訊號的擷取，再配合一座標系的利用產生出一指向性性能評估數據。(e) placing a fifth micro-speaker that is driven and connected to the signal analyzer on a turntable and rotating, and setting a third sound receiver connected to the signal analyzer to the fifth micro-speaker The second fixed distance is further used by the signal analyzer to perform a sound pressure signal acquisition on the fifth micro-speaker, and then use a calibration system to generate a directional performance evaluation data.
(f)輸入二分別具有一差異性質之單頻弦波訊號至一已驅動且與該訊號分析儀相連的第六微型揚聲器，並配合一組互調波失真函式之運算，得出一互調波失真性能評估數據。(f) inputting a single-frequency sine wave signal having a difference property to a sixth micro-speaker that is driven and connected to the signal analyzer, and working with a set of intermodulation wave distortion functions to obtain a mutual Chirping performance evaluation data.
(g)運用所求得之該阻抗評估數據、該振膜速度評估數據、該振型性能評估數據、該聲壓性能評估數據、該感度性能評估數據、該總諧波失真性能評估數據、該效率性能評估數據、該指向性性能評估數據及該互調波失真性能評估數據建立出該微型揚聲器之一整體評估。(g) using the obtained impedance evaluation data, the diaphragm velocity evaluation data, the mode performance evaluation data, the sound pressure performance evaluation data, the sensitivity performance evaluation data, the total harmonic distortion performance evaluation data, The efficiency performance evaluation data, the directional performance evaluation data, and the intermodulation distortion performance evaluation data establish an overall evaluation of the microspeaker.
本發明之功效在於，藉由該訊號分析儀及該運算處理模組並配合該第一收音器、該等第二收音器、該第三收音器及其他相關輔助量測裝置，來針對該第一、二、三、四、五、六微型揚聲器進行量測，進而得出其九種主要性能評估數據。The effect of the present invention is that the signal analyzer and the arithmetic processing module cooperate with the first sound receiver, the second sound receiver, the third sound receiver and other related auxiliary measuring devices to The first, second, third, fourth, fifth and sixth micro-speakers were measured, and the nine main performance evaluation data were obtained.
有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的呈現。The foregoing and other technical contents, features and effects of the present invention will be clear in the following detailed description of a preferred embodiment of the accompanying drawings. The presentation of Chu.
在本發明被詳細描述之前，要注意的是，在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖1至圖6及圖23，本發明微型揚聲器性能評估系統的較佳實施例，包含一訊號分析儀11、一處理運算模組12、一第一收音器13、複數第二收音器14、一第三收音器15、一訊號產生器16、一放大器17、一轉盤18、一轉動控制器19、一三通接頭20、一雷射量測裝置21、一橫向移動平台22、一障板23、一第一微型揚聲器24、一第二微型揚聲器25、一第三微型揚聲器26、一第四微型揚聲器27、一第五微型揚聲器28、一第六微型揚聲器29、一組顯示介面30，及一顯示裝置31。Referring to FIG. 1 to FIG. 6 and FIG. 23, a preferred embodiment of the microspeaker performance evaluation system of the present invention comprises a signal analyzer 11, a processing computing module 12, a first sound receiver 13, and a plurality of second sound receivers 14. a third sound receiver 15, a signal generator 16, an amplifier 17, a turntable 18, a rotation controller 19, a three-way joint 20, a laser measuring device 21, a lateral moving platform 22, a barrier The board 23, a first micro speaker 24, a second micro speaker 25, a third micro speaker 26, a fourth micro speaker 27, a fifth micro speaker 28, a sixth micro speaker 29, a set of display interfaces 30 And a display device 31.
該訊號分析儀11具有一第一通道111與一第二通道112。The signal analyzer 11 has a first channel 111 and a second channel 112.
該處理運算模組12與該訊號分析儀11相連接，且具有進行一組感度定義函式、一諧波函式、一電功率函式、一組互調波失真函式與四則運算之運算功能。The processing module 12 is connected to the signal analyzer 11 and has a computing function of performing a set of sensitivity defining functions, a harmonic function, an electric power function, a set of intermodulation wave distortion functions and four arithmetic operations. .
該第一收音器13、該等第二收音器14與該第三收音器15分別與該訊號分析儀11相連接。The first sound receiver 13, the second sound receiver 14 and the third sound receiver 15 are respectively connected to the signal analyzer 11.
該訊號產生器16具有輸出一電壓之功能。The signal generator 16 has a function of outputting a voltage.
該放大器17設置於該第二微型揚聲器25及該訊號產生器16間。The amplifier 17 is disposed between the second microspeaker 25 and the signal generator 16.
該轉盤18可繞其軸心轉動。The turntable 18 is rotatable about its axis.
該轉動控制器19用來對該轉盤18進行其旋轉角度與 旋轉速度之調控。The rotation controller 19 is used to rotate the turntable 18 with its rotation angle The regulation of the rotation speed.
該三通接頭20具有一連接端、一正極端與一負極端，且該連接端連接於該訊號分析儀11之第一通道111。The three-way connector 20 has a connecting end, a positive end and a negative end, and the connecting end is connected to the first channel 111 of the signal analyzer 11 .
該雷射量測裝置21與該訊號分析儀11相連並可發出雷射光。The laser measuring device 21 is connected to the signal analyzer 11 and emits laser light.
該橫向移動平台22可水平運動且供該第二微型揚聲器25置放。The lateral movement platform 22 is horizontally movable and is placed for the second microspeaker 25.
該障板23設立於距離該第一收音器13一第一固定距離處。The baffle 23 is established at a first fixed distance from the first sound receiver 13.
參閱圖1，該第一微型揚聲器24與該訊號分析儀11相連且包括一電阻241與一蜂鳴器242，並可藉由該訊號產生器16所輸入之電壓驅動，當該三通接頭20之正極連接該第一微型揚聲器24內之蜂鳴器242，而其負極端先經由該第一微型揚聲器24之電阻241後再連通至該蜂鳴器242時，再運用該訊號分析儀11及該處理運算模組12之處理，產生一如圖7所示之阻抗評估數據。Referring to FIG. 1, the first micro-speaker 24 is connected to the signal analyzer 11 and includes a resistor 241 and a buzzer 242, and can be driven by the voltage input by the signal generator 16, when the three-way connector 20 is The positive electrode is connected to the buzzer 242 in the first micro-speaker 24, and the negative terminal is first connected to the buzzer 242 via the resistor 241 of the first micro-speaker 24, and then the signal analyzer 11 is used. The processing of the processing module 12 produces an impedance evaluation data as shown in FIG.
參閱圖2，該第二微型揚聲器25與該訊號分析儀11相連且包括至少一具有一組量測點之振膜251，並可藉由該訊號產生器16所輸入之電壓驅動，當該雷射量測裝置21對該振膜251進行量測時，再運用該訊號分析儀11之處理，產生一如圖8所示之振膜速度評估數據，而當該雷射量測裝置21對該振膜251上之各量測點進行振速量測，並將該第二微型揚聲器25進行水平方向之移動，以進行定點移動測試，再配合該訊號分析儀11及該處理運算模組12之處理 ，產生一如圖9所示之振型性能評估數據。Referring to FIG. 2, the second microspeaker 25 is connected to the signal analyzer 11 and includes at least one diaphragm 251 having a set of measurement points, and can be driven by the voltage input by the signal generator 16, when the mine When the radiation measuring device 21 measures the diaphragm 251, the processing of the signal analyzer 11 is used to generate a diaphragm speed evaluation data as shown in FIG. 8, and when the laser measuring device 21 Each of the measuring points on the diaphragm 251 performs vibration velocity measurement, and moves the second micro-speaker 25 in a horizontal direction to perform a fixed-point movement test, and then cooperates with the signal analyzer 11 and the processing computing module 12 deal with A mode performance evaluation data as shown in FIG. 9 is generated.
值得一提的是，在本較佳實施例中，在該雷射量測裝置21對該第二微型揚聲器25之振膜251進行量測前，是在其振膜251上塗上一用來作為雷射光反光面的染料。It is to be noted that, in the preferred embodiment, before the laser measuring device 21 measures the diaphragm 251 of the second microspeaker 25, it is coated on the diaphragm 251 for use as A dye on the reflective surface of a laser.
參閱圖3，該第三微型揚聲器26設置於該障板23上，且與該訊號分析儀11相連並可藉由該訊號產生器16所輸入之電壓驅動，當利用該第一收音器13對該第三微型揚聲器26測量，並藉由該訊號分析儀11之處理，產生一如圖10所示之聲壓性能評估數據、一聲壓值與一聲壓位準，當利用該處理運算模組12接收該聲壓值及該聲壓位準後，經運算處理產生一感度性能評估數據(圖未示)，當該處理運算模組12再接收一單頻弦波訊號之輸入時，於處理後產生一總諧波失真性能評估數據(圖未示)。Referring to FIG. 3, the third microspeaker 26 is disposed on the baffle 23 and is connected to the signal analyzer 11 and can be driven by the voltage input by the signal generator 16, when the first radio 13 is used. The third microspeaker 26 measures and generates a sound pressure performance evaluation data, a sound pressure value and a sound pressure level as shown in FIG. 10 by the processing of the signal analyzer 11, when using the processing operation mode After receiving the sound pressure value and the sound pressure level, the group 12 generates a sensitivity performance evaluation data (not shown) through operation processing, and when the processing operation module 12 receives an input of a single frequency sine wave signal, After processing, a total harmonic distortion performance evaluation data (not shown) is generated.
值得注意的是，在本較佳實施例中，該障板23的尺寸是根據AES2-1984之R2003規格所設立，然而，前述之尺寸態樣，僅為本發明之一較佳實施例的說明，而該障板23之尺寸亦可以是有利量測之目的的其他特殊尺寸，而不應以此例之特定態樣為限It should be noted that, in the preferred embodiment, the size of the baffle 23 is set according to the R2003 specification of AES2-1984. However, the foregoing dimensions are merely illustrative of one preferred embodiment of the present invention. The size of the baffle 23 may also be other special dimensions for the purpose of measurement, and should not be limited to the specific aspect of the example.
參閱圖4，該第四微型揚聲器27設置於一假想半球體32之球心上，且與該訊號分析儀11相連並可藉由該訊號產生器16所輸入之電壓驅動，當透過置於該假想半球體32球面之複數點上的該等第二收音器14，對該第四微型揚聲器27進行量測，並配合該訊號分析儀11及該處理運算模組12之處理後，產生一如圖11所示之效率性能評估數據。Referring to FIG. 4, the fourth microspeaker 27 is disposed on the center of an imaginary hemisphere 32 and is connected to the signal analyzer 11 and can be driven by the voltage input by the signal generator 16. The second microphones 14 on the plurality of points of the imaginary hemisphere 32 are measured by the signal analyzer 11 and the processing module 12, and are generated as follows. Figure 11 shows the efficiency performance evaluation data.
參閱圖5，該第五微型揚聲器28設置於該轉盤18之中心點上，且與該訊號分析儀11相連並可藉由該訊號產生器16所輸入之電壓驅動，當透過該轉動控制器19來轉動該轉盤18上之第五微型揚聲器28，利用設置於距離該第五微型揚聲器28一第二固定距離之第三收音器15進行量測，再運用該訊號分析儀11及該處理運算模組12之處理，產生一如圖12所示之指向性性能評估數據。Referring to FIG. 5, the fifth microspeaker 28 is disposed at a center point of the turntable 18, and is connected to the signal analyzer 11 and can be driven by a voltage input by the signal generator 16 when passing through the rotation controller 19. The fifth microspeaker 28 on the turntable 18 is rotated, and the third microphone 15 disposed at a second fixed distance from the fifth microspeaker 28 is used for measurement, and the signal analyzer 11 and the processing model are used. The processing of group 12 produces a directional performance evaluation data as shown in FIG.
參閱圖6，該第六微型揚聲器29與該訊號分析儀11相連並可藉由該訊號產生器16所輸入之電壓驅動，當利用該訊號產生器16輸入二分別具有一差異性質之單頻弦波訊號至該第六微型揚聲器29時，再運用該訊號分析儀11及該處理運算模組12之處理，產生一互調波失真性能評估數據(圖未示)。Referring to FIG. 6, the sixth microspeaker 29 is connected to the signal analyzer 11 and can be driven by the voltage input by the signal generator 16. When the signal generator 16 is used to input two single frequency strings each having a difference property. When the signal is transmitted to the sixth micro-speaker 29, the signal analyzer 11 and the processing module 12 are used to generate an intermodulation distortion performance evaluation data (not shown).
此外，在本較佳實施例中，該訊號產生器16所輸入之差異性質為該二單頻弦波訊號之頻率呈八倍差且其振幅之比例為四比一。In addition, in the preferred embodiment, the difference characteristic of the signal generator 16 is that the frequency of the two single-frequency sine wave signals is eight times different and the ratio of the amplitudes is four to one.
該組顯示介面30將所求得之該阻抗評估數據、該振膜速度評估數據、該振型性能評估數據、該聲壓性能評估數據、該感度性能評估數據、該總諧波失真性能評估數據、該效率性能評估數據、該指向性性能評估數據，及該互調波失真性能評估數據透過該顯示裝置31呈現出。The set of display impedance evaluation data obtained by the interface 30, the diaphragm velocity evaluation data, the mode performance evaluation data, the sound pressure performance evaluation data, the sensitivity performance evaluation data, and the total harmonic distortion performance evaluation data The efficiency performance evaluation data, the directivity performance evaluation data, and the intermodulation distortion performance evaluation data are presented through the display device 31.
值得一提的是，該組顯示介面30除將所求出之各相關數據顯示出來之外，還包括如圖13所示之一主要介面及依序相應地另包括以下所列之相關操作介面：如圖14所示之 一阻抗性量測介面、如圖15所示之一振膜速度量測介面、如圖16所示之一振型性能量測介面、如圖17所示之一遠場聲壓量測介面、如圖18所示之一感度量測介面、如圖19所示之一總諧波失真量測介面、如圖20所示之一效率量測介面、如圖21所示之一指向性量測介面、如圖22所示之一互調波失真量測介面。It is worth mentioning that the display interface 30 includes, in addition to the related data obtained, a main interface as shown in FIG. 13 and correspondingly including the related operation interfaces listed below. : as shown in Figure 14. A resistive measurement interface, a diaphragm velocity measurement interface as shown in FIG. 15, a mode-type energy measurement interface as shown in FIG. 16, and a far-field sound pressure measurement interface as shown in FIG. As shown in FIG. 18, one measurement interface, one total harmonic distortion measurement interface as shown in FIG. 19, one efficiency measurement interface as shown in FIG. 20, and one directivity measurement as shown in FIG. The interface, as shown in Figure 22, is an intermodulation wave distortion measurement interface.
配合參閱圖24，與該系統之較佳實施例對應之方法，包含以下步驟：在進行以下步驟說明前，需補充說明的是，由於該方法與前述所提之系統是相應的，因此，各相關細節說明之雷同處，以下將不再重複地贅述。Referring to FIG. 24, a method corresponding to the preferred embodiment of the system includes the following steps: Before the following steps are explained, it should be additionally noted that since the method corresponds to the aforementioned system, each The similarities of the relevant details are not repeated here.
首先，如步驟40所示，藉由與該訊號分析儀11相連之已驅動的第一微型揚聲器24內的電阻241所發出之一電壓訊號進行量測，並產生該阻抗評估數據。First, as shown in step 40, one of the voltage signals emitted by the resistor 241 in the driven first microspeaker 24 connected to the signal analyzer 11 is measured, and the impedance evaluation data is generated.
在此針對上述步驟再做更進一步說明，在本較佳實施例中，該第一微型揚聲器24之電壓訊號的量測及該阻抗評估數據的得出，是藉由該訊號產生器16產生輸出電壓至該第一微型揚聲器24，再將該三通接頭20的連接端連接於該訊號分析儀11的第一通道111，其正極端連接該第一微型揚聲器24內之蜂鳴器242，而負極端先經由該第一微型揚聲器24之電阻241後再連通至該蜂鳴器242，再擷取該第一微型揚聲器24之輸出電壓並導入該訊號分析儀11之第二通道112，最後該運算處理模組16再根據輸出電壓除以輸出電壓減去輸入電壓之值得出該阻抗評估數據。The above steps are further explained. In the preferred embodiment, the measurement of the voltage signal of the first microspeaker 24 and the calculation of the impedance evaluation data are generated by the signal generator 16. a voltage is applied to the first micro-speaker 24, and the connection end of the three-way connector 20 is connected to the first channel 111 of the signal analyzer 11, and the positive terminal thereof is connected to the buzzer 242 in the first micro-speaker 24, and The negative terminal is first connected to the buzzer 242 via the resistor 241 of the first micro-speaker 24, and then the output voltage of the first micro-speaker 24 is extracted and introduced into the second channel 112 of the signal analyzer 11, and finally The arithmetic processing module 16 then outputs the impedance evaluation data based on the output voltage divided by the output voltage minus the input voltage.
其次，如步驟41所示，運用與該訊號分析儀11相連之雷射量測裝置21，對已驅動且與該訊號分析儀11相連的第二微型揚聲器25上之振膜251進行量測，產生該振膜速度評估數據。Next, as shown in step 41, the diaphragm 251 on the second microspeaker 25 that is driven and connected to the signal analyzer 11 is measured by the laser measuring device 21 connected to the signal analyzer 11. The diaphragm speed evaluation data is generated.
續如步驟42所示，該步驟42包括以下次步驟：如次步驟421所示，於該振膜251上規劃出該組量測點及各量測點間之量測間隔，並如次步驟252所示，將該第二微型揚聲器25進行水平方向之移動，再如次步驟423所示，藉由該雷射量測裝置21依序量測該組量測點之振速，並如次步驟424所示，配合該訊號分析儀11的分析得出每一量測點之一輸出速度及一輸入電壓間的一頻率響應，再如次步驟425所示，藉由擷取各量測點之頻率響應，產生出該振型性能評估數據。Continued as shown in step 42, the step 42 includes the following steps: as shown in the second step 421, the measurement points between the set of measurement points and the measurement points are planned on the diaphragm 251, and the steps are as follows. 252, the second micro-speaker 25 is moved in the horizontal direction, and as shown in the next step 423, the laser measuring device 21 sequentially measures the vibration speed of the set of measuring points, and As shown in step 424, an analysis of the signal analyzer 11 results in a frequency response between an output speed of each measurement point and an input voltage, and as shown in step 425, by taking each measurement point. The frequency response produces the vibration mode performance evaluation data.
接著，如步驟43所示，該步驟43包括以下次步驟：如次步驟431所示，將已驅動且與該訊號分析儀11相連的第三微型揚聲器26固定於該障板23上，並如次步驟432所示，藉由距離該第三微型揚聲器26該第一固定距離且與該訊號分析儀11相連之第一收音器13來進行量測，再如次步驟433所示，利用該訊號分析儀11產生出該聲壓值、該聲壓性能評估數據與該聲壓位準。Next, as shown in step 43, the step 43 includes the following steps: as shown in the second step 431, the third microspeaker 26 that has been driven and connected to the signal analyzer 11 is fixed to the baffle 23, and Step 432 is performed by measuring the first fixed distance from the third micro-speaker 26 and connected to the first sound receiver 13 of the signal analyzer 11, and then using the signal as shown in the next step 433. The analyzer 11 generates the sound pressure value, the sound pressure performance evaluation data, and the sound pressure level.
再來，如步驟44所示，透過該聲壓位準與該組感度定義函式求得該感度性能評估數據。Then, as shown in step 44, the sensitivity performance evaluation data is obtained through the sound pressure level and the set of sensitivity definition functions.
緊接著，如步驟45所示，且再配合一單頻弦波訊號之輸入與該諧波函式之運算，得出該總諧波失真性能評估數 據。此外，於求出該總諧波失真性能評估數據過程時，所使用的諧波函式為該第三微型揚聲器之複數諧波聲壓個別平方後相加開平方根再除以其一總聲壓後轉換成百分率。Then, as shown in step 45, and combined with the input of a single-frequency sine wave signal and the operation of the harmonic function, the total harmonic distortion performance evaluation number is obtained. according to. In addition, when determining the total harmonic distortion performance evaluation data process, the harmonic function used is the square harmonic of the complex harmonic sound pressure of the third microspeaker, and then divided by the total sound pressure. Converted to a percentage afterwards.
而後，如步驟46所示，該步驟46包括以下次步驟：如次步驟461所示，設置已驅動且與該訊號分析儀11相連的第四微型揚聲器27於該假想半球體32之球心上，如次步驟462所示，透過與該訊號分析儀11相連且置於該假想半球體32球面之該等點上的該等第二收音器14，對該第四微型揚聲器27進行量測，使得該訊號分析儀11產生相對應之聲功率值，並如次步驟463所示，利用該電功率函式求出該第四微型揚聲器27之電功率值，再如次步驟464所示，藉由計算其聲功率值與電功率之比例，而得出該效率性能評估數據。Then, as shown in step 46, the step 46 includes the following steps: as shown in the second step 461, the fourth microspeaker 27 that has been driven and connected to the signal analyzer 11 is disposed on the center of the imaginary hemisphere 32. As shown in the next step 462, the fourth microspeaker 27 is measured by the second microphones 14 connected to the signal analyzer 11 and placed at the points of the spherical surface of the imaginary hemisphere 32. The signal analyzer 11 is caused to generate a corresponding sound power value, and as shown in the next step 463, the electric power value of the fourth microspeaker 27 is obtained by using the electric power function, and is calculated by the second step 464. The ratio of the sound power value to the electric power is used to derive the efficiency performance evaluation data.
再來，如步驟47所示，將已驅動且與該訊號分析儀11相連的第五微型揚聲器28設置於該轉盤18上並轉動，且將與該訊號分析儀11相連的第三收音器15設置於距離該第五微型揚聲器28該第二固定距離，再利用該訊號分析儀11對該第五微型揚聲器28進行該聲壓訊號的擷取，再配合一座標系(如一般常用的極座標系)的利用，產生出該指向性性能評估數據。Then, as shown in step 47, the fifth microspeaker 28 that has been driven and connected to the signal analyzer 11 is disposed on the turntable 18 and rotated, and the third sound receiver 15 connected to the signal analyzer 11 is connected. The second micro-speaker 28 is disposed at a second fixed distance from the fifth micro-speaker 28, and then the signal is extracted by the signal analyzer 11 to the fifth micro-speaker 28, and then matched with a calibration system (such as a commonly used polar coordinate system). The utilization of the directivity performance evaluation data is generated.
然後，如步驟48所示，輸入二分別具有該差異性質之單頻弦波訊號至已驅動且與該訊號分析儀11相連的第六微型揚聲器29，並配合該組互調波失真函式之運算，得出該互調波失真性能評估數據。Then, as shown in step 48, two single-frequency sine wave signals respectively having the difference property are input to the sixth micro-speaker 29 that is driven and connected to the signal analyzer 11 and cooperate with the set of intermodulation wave distortion functions. The operation is performed to obtain the intermodulation wave distortion performance evaluation data.
最後，如步驟49所示，運用所求得之該阻抗評估數據、該振膜速度評估數據、該振型性能評估數據、該聲壓性能評估數據、該感度性能評估數據、該總諧波失真性能評估數據、該效率性能評估數據、該指向性性能評估數據及該互調波失真性能評估數據建立出該微型揚聲器之一整體評估。且承前所述，這九類評估數據在本較佳實施例中是透過該組顯示介面30配合該顯示裝置31所呈現出。Finally, as shown in step 49, the obtained impedance evaluation data, the diaphragm velocity evaluation data, the mode performance evaluation data, the sound pressure performance evaluation data, the sensitivity performance evaluation data, and the total harmonic distortion are used. The performance evaluation data, the efficiency performance evaluation data, the directional performance evaluation data, and the intermodulation distortion performance evaluation data establish an overall evaluation of the microspeaker. As described above, the nine types of evaluation data are presented in the preferred embodiment by the display interface 31 in conjunction with the display device 31.
歸納上述，本發明微型揚聲器性能評估方法及系統，藉由該訊號分析儀11之訊號接收及分析，並配合該運算處理模組16的運算，針對前述所提之各種測試態樣的該第一、二、三、四、五、六微型揚聲器24、25、26、27、28、29及該第一收音器13、該等第二收音器14、該第三收音器15與其他相關裝置的配合，進而量測出此類微型揚聲器的該阻抗評估數據、該振膜速度評估數據、該振型性能評估數據、該聲壓性能評估數據、該感度性能評估數據、該總諧波失真性能評估數據、該效率性能評估數據、該指向性性能評估數據及該互調波失真性能評估數據等九種主要性能評估數據，所以確實能夠達到本發明之目的。In summary, the method and system for evaluating the performance of the micro-speaker of the present invention, by the signal receiving and analyzing of the signal analyzer 11 and the operation of the arithmetic processing module 16, the first of the various test modes mentioned above. , two, three, four, five, six micro-speakers 24, 25, 26, 27, 28, 29 and the first sound receiver 13, the second sound receiver 14, the third sound receiver 15 and other related devices Cooperating to measure the impedance evaluation data of the microspeaker, the diaphragm velocity evaluation data, the mode performance evaluation data, the sound pressure performance evaluation data, the sensitivity performance evaluation data, and the total harmonic distortion performance evaluation The nine main performance evaluation data, such as the data, the efficiency performance evaluation data, the directivity performance evaluation data, and the intermodulation distortion performance evaluation data, can indeed achieve the object of the present invention.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.
11‧‧‧訊號分析儀11‧‧‧Signal Analyzer
111‧‧‧第一通道111‧‧‧First Passage
112‧‧‧第二通道112‧‧‧second channel
12‧‧‧運算處理模組12‧‧‧Operation Processing Module
13‧‧‧第一收音器13‧‧‧ first radio
14‧‧‧第二收音器14‧‧‧second radio
15‧‧‧第三收音器15‧‧‧ Third Radio
16‧‧‧訊號產生器16‧‧‧Signal Generator
17‧‧‧放大器17‧‧‧Amplifier
18‧‧‧轉盤18‧‧‧ Turntable
19‧‧‧轉動控制器19‧‧‧Rotary controller
20‧‧‧三通接頭20‧‧‧3-way connector
21‧‧‧雷射量測裝置21‧‧‧Laser measuring device
22‧‧‧橫向移動平台22‧‧‧Horizontal mobile platform
23‧‧‧障板23‧‧ ‧Band
24‧‧‧第一微型揚聲器24‧‧‧First Micro Speaker
25‧‧‧第二微型揚聲器25‧‧‧Second microspeaker
26‧‧‧第三微型揚聲器26‧‧‧ Third Micro Speaker
27‧‧‧第四微型揚聲器27‧‧‧fourth miniature speaker
28‧‧‧第五微型揚聲器28‧‧‧ Fifth Micro Speaker
29‧‧‧第六微型揚聲器29‧‧‧ Sixth Micro Speaker
30‧‧‧顯示介面30‧‧‧Display interface
31‧‧‧顯示裝置31‧‧‧ display device
32‧‧‧假想半球體32‧‧‧Imaginary hemisphere
40~49‧‧‧步驟40~49‧‧‧Steps
421~425‧‧‧次步驟421~425‧‧ steps
431~433‧‧‧次步驟431~433‧‧‧ steps
461~464‧‧‧次步驟461~464‧‧ steps
圖1是一示意圖，說明本發明微型揚聲器性能評估系 統之較佳實施例中，用來求出一阻抗評估數據的各相關元件配置態樣；圖2是一示意圖，說明該系統較佳實施例中，用來求出一振膜速度評估數據及一振型性能評估數據的各相關元件配置態樣；圖3是一示意圖，說明該系統較佳實施例中，用來求出一聲壓性能評估數據、一感度性能評估數據及一總諧波失真性能評估數據的各相關元件配置態樣；圖4是一示意圖，說明該系統較佳實施例中，用來求出一效率性能評估數據的各相關元件配置態樣；圖5是一示意圖，說明該系統較佳實施例中，用來求出一指向性性能評估數據的各相關元件配置態樣；圖6是一示意圖，說明該系統較佳實施例中，用來求出一互調波失真性能評估數據的各相關元件配置態樣；圖7是一統計圖，說明該系統較佳實施例中，所呈現之一阻抗評估數據；圖8是一統計圖，說明該系統較佳實施例中，所呈現之一振膜速度評估數據；圖9是一統計圖，說明該系統較佳實施例中，所呈現之一振型性能評估數據；圖10是一統計圖，說明該系統較佳實施例中，所呈現之一聲壓性能評估數據；圖11是一統計圖，說明該系統較佳實施例中，所呈現之一效率性能評估數據； 圖12是一統計圖，說明該系統較佳實施例中，所呈現之一指向性性能評估數據；圖13是一介面圖，說明該系統較佳實施例中，一主要介面之呈現態樣；圖14是一介面圖，說明該系統較佳實施例中，一阻抗性量測介面之呈現態樣；圖15是一介面圖，說明該系統較佳實施例中，一振膜速度量測介面之呈現態樣；圖16是一介面圖，說明該系統較佳實施例中，一振型性能量測介面之呈現態樣；圖17是一介面圖，說明該系統較佳實施例中，一遠場聲壓量測介面之呈現態樣；圖18是一介面圖，說明該系統較佳實施例中，一感度量測介面之呈現態樣；圖19是一介面圖，說明該系統較佳實施例中，一總諧波失真量測介面之呈現態樣；圖20是一介面圖，說明該系統較佳實施例中，一效率量測介面之呈現態樣；圖21是一介面圖，說明該系統較佳實施例中，一指向性量測介面之呈現態樣；圖22是一介面圖，說明該系統較佳實施例中，一互調波失真量測介面之呈現態樣；圖23是一示意圖，說明該系統較佳實施例中，一阻顯示介面及一顯示裝置之態樣；及 圖24是一流程圖，說明與該系統相對應之方法較佳實施例的相關步驟。Figure 1 is a schematic view showing the performance evaluation system of the microspeaker of the present invention In the preferred embodiment, the relevant component configuration for determining an impedance evaluation data; FIG. 2 is a schematic diagram showing the preferred embodiment of the system for determining a diaphragm velocity evaluation data and FIG. 3 is a schematic diagram showing a sound pressure performance evaluation data, a sensitivity performance evaluation data, and a total harmonic in the preferred embodiment of the system. FIG. FIG. 4 is a schematic diagram showing the configuration of each related component used to determine an efficiency performance evaluation data in the preferred embodiment of the system; FIG. 5 is a schematic diagram. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the preferred embodiment of the system, various related component configurations are used to obtain a directional performance evaluation data. FIG. 6 is a schematic diagram showing a preferred embodiment of the system for determining an intermodulation wave. Correlation component configuration of the distortion performance evaluation data; FIG. 7 is a statistical diagram showing one of the impedance evaluation data presented in the preferred embodiment of the system; FIG. 8 is a statistical diagram illustrating the preferred embodiment of the system In the present invention, one of the diaphragm speed evaluation data is presented; FIG. 9 is a statistical diagram showing one of the vibration mode performance evaluation data in the preferred embodiment of the system; FIG. 10 is a statistical diagram illustrating that the system is better. In the embodiment, one of the sound pressure performance evaluation data is presented; FIG. 11 is a statistical diagram illustrating one of the efficiency performance evaluation data presented in the preferred embodiment of the system; Figure 12 is a statistical diagram showing one of the directivity performance evaluation data presented in the preferred embodiment of the system; Figure 13 is an interface diagram showing the presentation of a main interface in the preferred embodiment of the system; Figure 14 is an interface diagram showing the appearance of a resistive measurement interface in the preferred embodiment of the system; Figure 15 is an interface diagram showing a diaphragm velocity measurement interface in the preferred embodiment of the system Figure 16 is an interface diagram showing the appearance of a vibrating energy measuring interface in the preferred embodiment of the system; Figure 17 is an interface diagram showing a preferred embodiment of the system, The appearance of the far field sound pressure measurement interface; FIG. 18 is an interface diagram showing the appearance of a sensing measurement interface in the preferred embodiment of the system; FIG. 19 is an interface diagram showing that the system is better. In an embodiment, a representation of a total harmonic distortion measurement interface; FIG. 20 is an interface diagram illustrating a presentation of an efficiency measurement interface in the preferred embodiment of the system; FIG. 21 is an interface diagram, Illustrating a preferred embodiment of the system, a directional measurement interface Figure 22 is an interface diagram showing the appearance of an intermodulation distortion measurement interface in the preferred embodiment of the system; Figure 23 is a schematic diagram showing a preferred embodiment of the system Display interface and a display device; and Figure 24 is a flow chart illustrating the steps associated with a preferred embodiment of the method corresponding to the system.
40~49‧‧‧步驟40~49‧‧‧Steps
421~425‧‧‧次步驟421~425‧‧ steps
431~433‧‧‧次步驟431~433‧‧‧ steps
461~464‧‧‧次步驟461~464‧‧ steps
Claims (18)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97142651A TWI384890B (en) | 2008-11-05 | 2008-11-05 | A performance measurement method and system for microspeakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97142651A TWI384890B (en) | 2008-11-05 | 2008-11-05 | A performance measurement method and system for microspeakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201019744A TW201019744A (en) | 2010-05-16 |
| TWI384890B true TWI384890B (en) | 2013-02-01 |
Family
ID=44831881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97142651A TWI384890B (en) | 2008-11-05 | 2008-11-05 | A performance measurement method and system for microspeakers |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI384890B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI562647B (en) * | 2014-12-24 | 2016-12-11 | Univ Nat Taiwan Science Tech | The constructive design of vibration measurement for electrostatic loudspeaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030048914A1 (en) * | 2001-09-12 | 2003-03-13 | Seung-Hwan Yi | Micromachined piezoelectric microspeaker and fabricating method thereof |
| TW530518B (en) * | 2000-08-03 | 2003-05-01 | New Transducers Ltd | Bending wave loudspeaker |
| TWI316824B (en) * | 2006-05-05 | 2009-11-01 | Univ Nat Chiao Tung |
-
2008
- 2008-11-05 TW TW97142651A patent/TWI384890B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW530518B (en) * | 2000-08-03 | 2003-05-01 | New Transducers Ltd | Bending wave loudspeaker |
| US20030048914A1 (en) * | 2001-09-12 | 2003-03-13 | Seung-Hwan Yi | Micromachined piezoelectric microspeaker and fabricating method thereof |
| US20050005429A1 (en) * | 2001-09-12 | 2005-01-13 | Seung-Hwan Yi | Micromachined piezoelectric microspeaker and fabricating method therof |
| TWI316824B (en) * | 2006-05-05 | 2009-11-01 | Univ Nat Chiao Tung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI562647B (en) * | 2014-12-24 | 2016-12-11 | Univ Nat Taiwan Science Tech | The constructive design of vibration measurement for electrostatic loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201019744A (en) | 2010-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106680376B (en) | Sound insulation measurement system and method based on three-dimensional sound intensity array | |
| CN106921928A (en) | Measurement, calibration method and device to microphone | |
| WO2009110239A1 (en) | Sound measurement device | |
| US8400877B2 (en) | Method and apparatus for measuring position of the object using microphone | |
| JPWO2009153999A1 (en) | Acoustic energy measuring device, acoustic performance evaluation device and acoustic information measuring device using the same | |
| Kumar et al. | Long-range measurement system using ultrasonic range sensor with high-power transmitter array in air | |
| Chiang et al. | Vibration and sound radiation of an electrostatic speaker based on circular diaphragm | |
| CN107231597B (en) | Method and system for testing harmonic distortion value of loudspeaker | |
| Prato et al. | Pressure calibration of a digital microelectromechanical system microphone by comparison | |
| TWI384890B (en) | A performance measurement method and system for microspeakers | |
| Gomez-Bolanos et al. | Benefits and applications of laser-induced sparks in real scale model measurements | |
| Huang et al. | A large-diaphragm piezoelectric panel loudspeaker and its acoustic frequency response simulation method | |
| Bu et al. | Parameterization of the three-dimensional room transfer function in horizontal plane | |
| Voishvillo | Simulation of Horn Driver Response by Combination of Matrix Analysis and FEA | |
| Chojnacki et al. | Coupled speakers directivity measurements for small acoustic omnidirectional source development | |
| CN103686579B (en) | Loudspeaker abnormal sound detection method and utilize the method loudspeaker detection device | |
| CN206531697U (en) | A kind of side-mounted flexure element measurement apparatus | |
| JP2011035506A (en) | Acoustic measurement method and system | |
| Jia | Far-field MEMS microphone array beamforming–Measurements, simulations, and design | |
| Xing et al. | A fusion algorithm of passive sound source localization based on the two-plane four-element cross array | |
| CN105954710B (en) | A kind of error analysis device and method based on embedded Array | |
| Sanalatii et al. | Assessment of the radiation mode method for in situ measurements of loudspeaker systems | |
| Heller et al. | Calibration of soundfield microphones using the diffuse-field response | |
| CN103750857B (en) | Working angle determining method and system for working equipment | |
| Kan et al. | Hardware design of passive acoustic source localization system based on a five-element cross microphone array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |