201123920 六、發明說明： 【發明所屬之技術領域】 本發明關於一種收音裝置及使用其之電子裝置，尤其 係涉及一種壓電式（piezoelectric)收音裝置及使用其之電 子裝置。 【先前技術】 收音裝置已成為現代人日常生活中最常使用的用品之 一，舉凡行動通訊設備、錄音筆、具錄音功能的音樂播放 裝置等，皆需要品質良好的收音裝置來達成接收外界聲音。 常見的收音裝置包括電容式麥克風及壓電式麥克風， 傳統的壓電式麥克風中，多半利用一振膜或彈性物質貼附 在人體上，以感受人體發聲時之聲波壓力，並將聲波之壓 力傳遞到壓電材料，使壓電材料之結構因壓力而改變，再 產生電壓以供處理。 傳統的壓電式麥克風係利用振膜或彈性物質（如海綿 或彈簧）感測聲波振動，而此類振膜或彈性物質本身會吸 收掉部分的聲波壓力的振動，使得原本振動程度較細微的 高頻聲波訊號易於產生失真；且還會形成一個低頻共振結 構，會將低頻回音特別加強，造成嚴重的回音失真，因此， 對聲波的感測靈敏度及收音效果都需要進一步的改善。 緣是，本發明人有感於上述缺失及發明人先前設計 之收音裝置具有可改善之處，乃特潛心研究並配合學理 之運用，終於提出一種設計合理且有效改善上述缺失之 本發明。 4/12 201123920 【發明内容】 1 問題，本發明之主要目的，係提供-種收 i敏产及i^之電子裝置，其結構設計具有較佳的感測 • 頻，可提升音質;且收音裝置體積較 .二=裝於其他電子裝置上’增加電子裝置之使用 括上述之目的，本發明提供-種收音裝置，包 置於該’其具有一!"音口；一第一壓電元件’其設 !卢二^一厂内:以感測高頻聲波之振動而轉換輸出一訊 广杜堅電元件’其設置於該容置體内，該第二屢電 = = 較該第一壓電元件長’以感測低頻聲波 ==出一訊號；以及一電路單元，其電性連接 於該第-壓電疋件及該第二麼電元件，以接收該第一 $件及該第二㈣元件之訊號，並進行處理產生一聲音訊 本發明諸供—種❹收音裝置之電 之收音裝置，並接收該收音裝置所產3 卓日5孔唬後加以儲存或輸出。 本發明具有以下有益的效果： 八^田、該容置體内設有第—㈣元件及第二壓電元件，可 二伟用=感測高、低頻聲波之振動而轉換輸出訊號，具有 車又佳的感測靈敏度及較寬廣的音頻，可提升音質。 内，=雷η農置易於安裝於具有收音需求二電子裝置 使電子裝置增加使用功能及便利性。 5/12 201123920 【實施方式】 請參閱第一圖，本發明係提供一種收音裝置1，該收 音裝置1可為接觸式或非接觸式收音裝置，以接觸式收音 裝置為例，其可被貼附或按壓在人體的發聲部位周圍的皮 膚；非接觸式意即不接觸人體。收音裝置1包括：—容置 體1 0、一第一壓電元件1 1、一第二壓電元件1 2及一 電路單元1 3。 在本實施例中’該容置體10為金屬材質之中空圓柱 體，其產生之極性為負極，可隔絕外界雜訊干擾。容置體1 0具有一容置空間1 0 1及一收音口 1 〇 2，該收音口 1 0 2連通容置空間1 0 1且位於容置體1 〇之一端，該& 置體1 0之另一端内則以電路單元1 3封閉。 該第一壓電元件11及第二壓電元件12之材料為壓 電陶磁、壓電晶體或壓電薄膜，壓電陶瓷例如：鈦酸鋇 (BaTi03)、鈦酸錯（Lead titanate，PbTi03)、結鈦酸紹（Lead zirconate titanate，PZT )或锆鈦酸鉛及銀複合物（PZT/Ag composites)等；壓電晶體常見的有：鈮酸鋰、鈮酸鉀、石英、 電氣石、酒石酸鈉（Sodium tartrate )、若歇爾鹽（Rochelle salt) 等；而壓電薄膜則例如：氧化辞（Zn〇)等；此外，天然的 南为子物貝及人工合成的聚合物中’也有部分具有所述的壓 電性能。 在本實施例中’該第一壓電元件11及第二壓電元件 1 2為圓柱狀體（但形狀並不以此為限），係設於容置體1 0内。第一壓電元件1 1及第二壓電元件丄2之一端固設 於電路單元13上’且以導線14電性連接於電路單元1 3。第一壓電元件1 1及第二壓電元件1 2之另一端各具 6/12 201123920 有一振動端110及120,該二振動端1 1 〇及工2 0 朝向收音口 1 〇 2，用以感測聲波之振動壓力。該第一壓 電凡件11用以感測高頻聲波之振動而轉換輸出一訊號， 並將讯號傳輸到電路單元1 3 ;該第二壓電元件1 2之長 • 度較第一壓電元件1 1長，以感測低頻聲波之振動而轉換 輸出一訊號，並將訊號傳輸到電路單元1 3。 值得一提的是，第一壓電元件1 1及第二壓電元件1 2内可進一步設置一支撐件111及121，用以增加支 • 撐力。 一該電路單元1 3包括電容、電晶體或放大電路（圖未 示）’用以接收第一壓電元件丄i及第二壓電元件丄2轉換 輸唬，並進行處理而產生一聲音訊號，進而可傳送 到揚聲器播出或儲存於電子裝置内（圖未示）。 请參閱第二圖，本實施例與上述實施例不同之處在 於：該電路單元丄3設於容置體丄〇相對於收音口丄〇 2 之一端外，該容置體1 0相對於收音口 1 0 2之一端内設 鲁有一固定結構1 7，第一壓電元件1 1及第二壓電元件1 2之一端分別固設於該固定結構1 7上。 睛芩閱第三圖’本實施例與上述實施例不同之處在 於.该第一壓電元件1 1及第二壓電元件1 2之振動端1 ^ 〇及1 2 0各環設有一振動增幅件i 5及i 6，該振動 增幅件1 5及1 6可為密度較高、重量較重的物質，例如 金屬’用以增加振動端1 1 0及1 2 0之振動幅度，當振 動中田度越大，第—壓電元件1 1及第二壓電元件1 2所轉 =輸出之訊號也越強，使電路單元1 3處理後所產生的聲 田汛號更為清晰，藉此提高收音靈敏度。 7/12 201123920 請參閱第四圖，本實施例與上述實施例（如第三圖所 示）不同之處在於：該第一壓電元件i i及第二壓電元件 1 2係為片狀體，振動增幅件i 5及2 6分別設於第—壓 電元件1 1之相對二側及第二壓電元件i 2之相對二側。 請參閱第五圖，本實施例與上述實施例（如第四圖所 示）不同之處在於：電路單元2 3設於容置體丄〇相對於 收音口1 0 2之一端外，容置體2 〇相對於收音口丄〇 2 之一端内設有固定結構1 7。 明參閱第六圖，本實施例與上述實施例不同之處在 於：該第一壓電元件1 i及第二壓電元件丄2係呈9〇度彎 折延伸，容置體1 0為中空矩形體，使收音裝置丄整體所 佔之體積較小，更易於安裝於電子裝置内。 另，請參閱第六A圖，本實施例與上述實施例不同之 處在於：容置體1 〇僅設置一呈90度彎折延伸之第二壓電 兀件1 2，以感測高、低頻聲波之振動而轉換輸出一訊號。 請參閱第七圖，本實施例與上述實施例（如第六圖所 示）不同之處在於：二振動增幅件i 5及1 6分別設於第 一壓電元件1丄近振動端i i 0之底側及第二壓電元件丄2 近振動端1 2 0之頂側。 請參閱第八圖，本實施例與上述實施例（如第七圖所 示）不同之處在於：電路單元1 3設於容置體i 〇之外， 容置體1 〇之底部設有固定結構1 7。 請參閱第九圖及第十圖，本發明另提供—種使用收音 裝置之電子裝置，該電子裝置2内除了設有上述之收音^ 置1外，還具有一供電單元2 1及一處理單元2 2。該^ 音裝置1傳輪聲音訊號給處理單元2 2，雖不需額外供給 8/12 201123920 電壓即可接收聲波振動的壓力而產生訊號，但由於電子裝 置1具有供電單元2 1，因此亦可利用供電單元2 1提供 額外的電壓（V+)給收音裝置χ，使得傳送到處理單元2' 2的聲音訊號，在相同的壓力下輸出更大電壓，而提高了 收音裝置1的靈敏度。處理單元2 2接收到聲音訊號=， 即可加以處理，供儲存在電子裝置2中、或輸出到其他電 =裝置，以利使用者進行語音通訊。且收音裝置丄之電路 單元1 3可δ又於電子裝置2内之電路板，以節省電子裝置 2内之使用空間。 、 綜上所述，本發明具有以下特色： 1、谷置體1 0Θ設有一長度較短之第一壓電元件1 土及-長度較長之第二壓電元件工2，可分別用以感測 二低頻聲波之振動而轉換輸出訊號，具有較佳的感測靈 敏度及較寬廣的音頻，可提升音質。 、 2該第一壓電元件1 1及第二壓電元件1 2係呈9〇 延伸’容置體1 〇為中空矩形體，使收音裝置i整 :斤伯之體積較小，除了可單獨使用外，更易於安裝於且 置2内’例如内後在行動通訊裝置： 子=二機麥克風當中，以接收使用者對電 ^^，增― 明收音聚置第-實施例之剖視示意圖。 弟-圖·縣發·音u 第三圖：係本發明收音 =狀a不思圖。 第四圖：係本發明狀剖視示意圖。 置第四貫把例之剖視示意圖。 9/12 201123920 =圖.係本發明收音裝置第五實施例之立 ，六圖：係本發明收音裳置第六實施例口八見:思圖。 第六A圖：係本發明收音裝置第七實_//視示意圖 圖。 貫例之部分剖視示;| 第七圖：係本發明收音裝置第八實施 係本發明收音裝置第九實施例之; = 使用收音裝置之電子裝置之= S.係本&明使用收音農置之 【主要元件符號說明】 U之^圖。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound pickup apparatus and an electronic apparatus using the same, and, in particular, to a piezoelectric sound pickup apparatus and an electronic apparatus using the same. [Prior Art] The radio receiver has become one of the most commonly used items in modern people's daily life. All mobile communication devices, voice recorders, music playback devices with recording functions, etc., all require good quality radio to achieve external sound reception. . Common radios include condenser microphones and piezoelectric microphones. Most of the traditional piezoelectric microphones are attached to the human body with a diaphragm or elastic material to sense the sound pressure of the human body when the sound is emitted, and the pressure of the sound waves. It is transferred to the piezoelectric material, causing the structure of the piezoelectric material to change due to pressure, and then generating a voltage for processing. Conventional piezoelectric microphones use acoustic diaphragms or elastic materials (such as sponges or springs) to sense acoustic vibrations, and such diaphragms or elastomers themselves absorb some of the vibration of the sonic pressure, making the original vibrations more subtle. The high-frequency sound wave signal is prone to distortion; and a low-frequency resonance structure is formed, which will particularly enhance the low-frequency echo, causing severe echo distortion. Therefore, the sensing sensitivity and sound receiving effect of the sound wave need to be further improved. On the contrary, the present inventors have felt that the above-mentioned deficiencies and the inventors' previously designed sound-receiving devices have improvements, and have devoted themselves to research and cooperation with the theory, and finally proposed a present invention which is rational in design and effective in improving the above-mentioned defects. 4/12 201123920 [Description of the Invention] 1 Problem, the main object of the present invention is to provide an electronic device for collecting and generating i-sensitive products, and the structure design has better sensing and frequency, which can improve sound quality; The device has a volume of two. It is installed on other electronic devices. The use of the electronic device includes the above-mentioned purpose. The present invention provides a sound collecting device, which is disposed in the 'with a !" sound port; a first piezoelectric device. The component 'is set! Lu 2 ^ 1 in the factory: to sense the vibration of high-frequency sound waves and convert the output of a Guang Du Du Jian electrical component' which is placed in the body, the second power = = compared to the first a piezoelectric element is long 'to sense a low frequency sound wave == a signal; and a circuit unit electrically connected to the first piezoelectric element and the second electrical component to receive the first piece and The signal of the second (four) component is processed and generated to generate a sound receiving device for the sound receiving device of the present invention, and is received and outputted by receiving the 3 holes of the sound generating device. The invention has the following beneficial effects: 八田, the body is provided with a first (four) element and a second piezoelectric element, and can be used to sense the vibration of the high and low frequency sound waves and convert the output signal. Better sensing sensitivity and wider audio for improved sound quality. Inside, the mine is easy to install on the electronic device with the demand for radio. The electronic device is used to increase the function and convenience. 5/12 201123920 [Embodiment] Referring to the first figure, the present invention provides a sound receiving device 1 which can be a contact type or a non-contact type sound receiving device. For example, a contact type sound receiving device can be attached. Attach or press on the skin around the vocal part of the human body; non-contact means that it does not touch the human body. The sound pickup device 1 includes: a housing 10, a first piezoelectric element 1 1 , a second piezoelectric element 12, and a circuit unit 13. In the present embodiment, the housing 10 is a hollow cylinder of metal material, and the polarity of the housing is a negative electrode, which can isolate external noise interference. The receiving body 10 has an accommodating space 1 0 1 and a sound receiving port 1 〇 2, and the sound collecting port 1 0 2 is connected to the accommodating space 1 0 1 and is located at one end of the accommodating body 1 ,, the & The other end of 0 is enclosed by circuit unit 13. The materials of the first piezoelectric element 11 and the second piezoelectric element 12 are piezoelectric ceramics, piezoelectric crystals or piezoelectric films, and piezoelectric ceramics such as barium titanate (BaTi03) and lead titanate (PbTi03). Lead zirconate titanate (PZT) or lead zirconate titanate and silver composites (PZT/Ag composites); piezoelectric crystals are commonly used: lithium niobate, potassium niobate, quartz, tourmaline, tartaric acid Sodium tartrate, Rochelle salt, etc.; and piezoelectric film, for example, oxidized (Zn), etc.; in addition, natural south is a subfamily and synthetic polymer 'also has a part Has the piezoelectric properties described. In the present embodiment, the first piezoelectric element 11 and the second piezoelectric element 12 are cylindrical (but not limited in shape), and are disposed in the housing 10. One end of the first piezoelectric element 1 1 and the second piezoelectric element 丄2 is fixed to the circuit unit 13 and electrically connected to the circuit unit 13 by a wire 14. The other ends of the first piezoelectric element 1 1 and the second piezoelectric element 1 2 have 6/12 201123920 having a vibration end 110 and 120, and the two vibration ends 1 1 and 2 0 are facing the sound receiving port 1 〇 2, To sense the vibration pressure of the sound wave. The first piezoelectric element 11 is configured to sense the vibration of the high frequency sound wave to convert and output a signal, and transmit the signal to the circuit unit 13; the length of the second piezoelectric element 12 is lower than the first pressure The electrical component 11 is long, converts and outputs a signal by sensing the vibration of the low frequency sound wave, and transmits the signal to the circuit unit 13. It is worth mentioning that a support member 111 and 121 may be further disposed in the first piezoelectric element 1 1 and the second piezoelectric element 12 to increase the support force. A circuit unit 13 includes a capacitor, a transistor or an amplifying circuit (not shown) for receiving the first piezoelectric element 丄i and the second piezoelectric element 丄2 to convert the input and processing to generate an audio signal. And can be transmitted to the speaker for broadcast or stored in the electronic device (not shown). Referring to the second figure, this embodiment is different from the above embodiment in that the circuit unit 丄3 is disposed outside the receiving body 丄〇 with respect to one end of the sound receiving port ,2, and the receiving body 10 is opposite to the receiving sound. One end of the port 1 0 2 is provided with a fixing structure 17. One end of the first piezoelectric element 1 1 and the second piezoelectric element 1 2 are respectively fixed on the fixing structure 17. The third embodiment of the present invention differs from the above embodiment in that the vibration terminals 1 ^ 〇 and 1 2 0 of the first piezoelectric element 1 1 and the second piezoelectric element 1 2 are provided with a vibration. The amplitude increasing members i 5 and i 6 can be a higher density and heavier weight material, such as metal 'to increase the vibration amplitude of the vibration end 1 1 0 and 1 2 0 when the vibration The greater the degree of the middle field, the stronger the signal of the first piezoelectric element 1 1 and the second piezoelectric element 12 is converted, so that the sound field nickname generated after the circuit unit 13 is processed is clearer. Improve the sensitivity of the radio. 7/12 201123920 Referring to the fourth figure, this embodiment is different from the above embodiment (as shown in the third figure) in that the first piezoelectric element ii and the second piezoelectric element 12 are in the form of a sheet. The vibration increasing members i 5 and 26 are respectively disposed on opposite sides of the first piezoelectric element 1 1 and opposite sides of the second piezoelectric element i 2 . Referring to the fifth embodiment, the embodiment is different from the above embodiment (as shown in the fourth figure) in that the circuit unit 2 3 is disposed outside the receiving body 丄〇 with respect to one end of the sound receiving port 10 2 . The body 2 is provided with a fixing structure 17 in one end of the sound receiving port 丄〇2. Referring to the sixth embodiment, the present embodiment is different from the above embodiment in that the first piezoelectric element 1 i and the second piezoelectric element 丄 2 are bent and extended at 9 degrees, and the receiving body 10 is hollow. The rectangular body makes the volume of the sound pickup device as small as a whole and is easier to install in the electronic device. In addition, referring to FIG. 6A, the difference between the embodiment and the above embodiment is that the receiving body 1 is only provided with a second piezoelectric element 12 that is bent at a 90-degree angle to sense high. The vibration of the low frequency sound wave converts and outputs a signal. Referring to the seventh figure, the embodiment is different from the above embodiment (as shown in the sixth figure) in that the two vibration increasing members i 5 and 16 are respectively disposed on the first piezoelectric element 1 near the vibration end ii 0 . The bottom side and the second piezoelectric element 丄2 are near the top side of the vibration end 1 2 0 . Referring to the eighth embodiment, the embodiment is different from the above embodiment (as shown in the seventh figure) in that the circuit unit 13 is disposed outside the receiving body i ,, and the bottom of the receiving body 1 is fixed. Structure 1 7. Referring to the ninth and tenth drawings, the present invention further provides an electronic device using a sound pickup device. The electronic device 2 has a power supply unit 2 1 and a processing unit in addition to the above-mentioned sound collection device 1 . twenty two. The sound device 1 transmits a sound signal to the processing unit 2 2, and the signal is generated by receiving the voltage of the acoustic vibration without additionally supplying the voltage of 8/12 201123920, but since the electronic device 1 has the power supply unit 2 1, it can also The power supply unit 21 is used to supply an additional voltage (V+) to the sound pickup device, so that the sound signal transmitted to the processing unit 2'2 outputs a larger voltage under the same pressure, and the sensitivity of the sound pickup device 1 is improved. The processing unit 2 2 receives the audio signal =, and can be processed for storage in the electronic device 2 or output to other devices to facilitate voice communication. Moreover, the circuit unit 13 of the radio device δ can be further connected to the circuit board in the electronic device 2 to save space in the electronic device 2. In summary, the present invention has the following features: 1. The valley body 10 is provided with a first piezoelectric element 1 having a shorter length and a second piezoelectric element 2 having a longer length, which can be used respectively. Sensing the vibration of the two low-frequency sound waves to convert the output signal, with better sensing sensitivity and wider audio, can improve the sound quality. 2, the first piezoelectric element 1 1 and the second piezoelectric element 1 2 are 9 〇 extending 'the housing 1 〇 is a hollow rectangular body, so that the sound receiving device i is small: the volume is small, except that it can be separate In addition, it is easier to install and set in 2, for example, inside and after the mobile communication device: sub = two microphones, to receive the user's electric power, increase the clear radio collection - the cross-sectional view of the embodiment . Brother-图·县发·音u The third picture: the invention of the radio = shape a not thinking. Fourth Figure: is a schematic cross-sectional view of the present invention. A cross-sectional view of the fourth example is given. 9/12 201123920 = Fig. is a fifth embodiment of the sound receiving device of the present invention. Fig. 6 is a view of the sixth embodiment of the present invention. Figure 6A is a schematic view of the seventh real _// of the sound pickup apparatus of the present invention. Partial cross-sectional view of the example; | Figure 7 is the ninth embodiment of the sound pickup apparatus of the present invention; = electronic device using the sound pickup device = S. [Main component symbol description] of the farmer's house.
1收音裝置 1 0容置體1 radio device 1 0 container
1〇1容置空間 1 0 2收音口 11第一壓電元件 1 10振動端 111支撐件 12第二壓電元件 1 2 0振動端 121支撐件 1 3電路單元 1 4導線 1 5振動增幅件 1 6振動增幅件 1 7固定結構 2電子裝置 2 1供電單元 2 2處理單元 10/121〇1 accommodating space 1 0 2 collecting port 11 first piezoelectric element 1 10 vibrating end 111 supporting member 12 second piezoelectric element 1 2 0 vibrating end 121 supporting member 1 3 circuit unit 1 4 wire 1 5 vibration increasing member 1 6 vibration amplification member 1 7 fixed structure 2 electronic device 2 1 power supply unit 2 2 processing unit 10/12