、發明說明 【發明所屬之技術領域】 本發明係有關於一種嗓音處理聲學傳感裴置，p 曰命 理聲學 可在前饋朗雜式與㈣式消雜叙間切麵路一種 傳感裝置。 ·. ' 【先前技術】 帶給人類在聽覺上的干擾，不僅容易產生煩噪的心 i長減料音的魏下，甚至會造摘力永久性的破壞。因 此近年來躲 > 肖除料術不斷__新，其巾在耳機領域 當中，早期是藉由結構上的改進，選觸音效果較好的耳钱耳BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a squeaking acoustic sensing device, and a sensing device for a feedforward cross-section and a (four) anamorphic cross-section. ·. '[Prior Art] Bringing human hearing disturbances, not only easy to produce troublesome hearts, but also the permanent damage of the cutting power. Therefore, in recent years, the escaping technique has been continuously __new, and its towel is in the field of headphones. In the early days, it was improved by structure, and the earphones with better touch effects were selected.
罩’通常這樣的耳機能夠隔離麵z以上的噪音，但是對於麵Z 以下的噪音，制是對於㈣噪音隔音效杲不好，故此類慣稱為 「被動消噪」的技術赌無法完整地解決噪音的問題；緣因於此， 近期被廣泛地提出的「絲消噪」之電子式㈣技術，即是為了 改善「被動_」之*足’而此「絲㈣技術目前可分為以 下兩種：前饋式消噪技術(Feed_Forward)及後镇式消噪技術 (Feed-Back)。 請參閱第1A圖卿，為前饋式消噪耳機丨之結構示意圖。耳 機1中配置-麥克風10、-消噪電路n及―揚聲器12，揚聲器 12係朝向使用者之耳道’麥克風1G接收外界噪音後，經由消噪電 路產生-個反向噪音訊絲抵料機丨帽_噪音。此實施方 式的優點是麥克風ίο蝴u純噪音，料會接收揚聲器u輪 1376164 =苡’==:個開迴路^不會引起任何閉迴路的振 耳殼並在耳殼衫次反射，从小效不’但噪音在經過 1A 、小和相位已經發生變化，麥$風The cover 'usually such a headphone can isolate the noise above the surface z, but for the noise below the surface Z, the system is not good for (4) noise and sound insulation, so the technical bet, which is often called "passive noise cancellation", cannot be completely solved. The problem of noise is due to the fact that the electronic (four) technology of "silk noise reduction", which has been widely proposed in the near future, is to improve the "passive_" of the "foot" technology. Kind: Feed-forward denoising technology (Feed_Forward) and post-town denoising technology (Feed-Back). Please refer to Figure 1A, which is a schematic diagram of the structure of the feedforward noise canceling headphone. - the noise canceling circuit n and the "speaker 12", the speaker 12 is directed toward the ear canal of the user. After receiving the external noise, the microphone 1G generates a reverse noise wire feeder cap _ noise through the noise canceling circuit. The advantage of the mode is that the microphone ίο butterfly u pure noise, will receive the speaker u wheel 1376164 = 苡 '= =: open circuit ^ will not cause any closed loop of the ear shell and reflect in the ear shell, from small effect not ' But the noise is already passing 1A, small and phase Change, wheat $ wind
斤扭_㈣音料辦之噪切綠大不同 L 的方向性很強，所以很難藉由同 —外… 的消噪要求。 講4來自不同方向的噪音 ^ ，為後饋式料耳機2 >，2中亦配置一麥克風2。、-輕電路21及—揚聲器22= 态22係朝向使用者之耳道，麥克風） 耳 n ± 克風20设置在揚聲器22與耳道之 =，因此麥克風2G在耳殼内所接收與噪音與人耳聽到 -支’且細_由消噪電路21將啤立泸油 哭^ 卞曰/慮波放大及相位變換後再驅動揚聲 二，發荦，如此閉迴路系統之設計，麥克風20對於噪音方向二 敏感，且由於反饋信號與聲音信 、 ° 立，扮而木席… 车曰乜或1宜加俊可產生高信噪比的聲 曰故而讀运至人耳時所聽到的噪音七 機具有較佳的消噪效果，然而由於麥克風2〇 耳 方，1給屮㈣鄕虛1 又且在揚聲器22前 般將;機拿來聽的f f共振衰減，對於一 得原本聲錢輪機反而使 【發明内容】 。有鑑於上述課題，本發明之目的在於提供—種整合 制噪=的碎，而職短㈣兩種不同 冰疋為4上述目的，本發明聲學傳感裝置包括—本體，一 揚聲器、—麥克風及—訊號處理It。本體具有-腔室、-出音D 及一入音口，腔室與出音口相連通，揚聲器設置在腔室内並得轉 其產生的聲音减自出音σ輸出至外界，麥克風設置在本體鄰近 於揚聲1§之位置’其可選擇性地與腔线人音口連通，訊號處运 裔則疋同時電性接於揚鞋及麥克風，當麥克風與腔室連通 時，麥克風減駐啤音訊號並傳送至訊號處㈣，且訊號處 理裔乃針對被定義為。¥音之聲音訊號輸出—反相訊號至揚聲器， 反之’當麥克風與人音口連通而不再與腔室連通時，麥克風改為 接收外界聲音職轉送至織處職，且訊號處職乃針對被 疋義為噪音之聲音訊號輪出一反相訊號至揚聲器。 由於本發明聲學傳感裝置之麥克風係可選擇性i也連通於腔室 以接收揚聲n之聲音職，或是連通於外界以接收外界之聲音訊 號’在接收外界聲音訊餅係得與訊號處理n形成-前饋式消嗓 模式，而在接收揚聲器聲音訊號時係得與訊號處理器形成一後饋 式肖本模式’因此’無論是產製者或消費者，可以在生產時或使 用時自行依據所需要的聲音表現來決定調整切換前饋模式或後饋 模式。 、 貝 【實施方式】 乂下將參,¾相關圖式，說明依據本發明較佳實施例之一種聲 學傳感裝置。 請參照第2圖所示，為本發明第一實施例之聲學傳感裝置之 U76164 剖面示意圖。圖中顯示聲學傳感 —本義、-縣n 4G、—麥克風5G ，其包括有 30呈右… 訊虎處理器60 ;本體 、一出音口32及一入音〇33,且腔室31與出音 =相連通，揚鞋4Q設置在腔室31内，而麥克風$刚 、版〕〇鄰近揚聲器40位置之一容置空間34 50可選紐地輿腔室31或人音σ ，二亚且麥兄風 迻接:ts： ’訊號處理器60電性 ^於知聲器40及麥克風5〇，當麥克風5〇盘腔 克風50接收腔室31内之聲音〜—k通時，麥 〇, . 4曰訊號以傳运至訊號處理器6〇，且訊 唬處驾60乃㈣被定義辦音之 / 簦哭μ = 翰出一反相訊號至揚 I 當麥克風50與入音口33連通，而不再與腔室31 =柄’麥克風5〇改為接收外界之聲音訊號以傳送至訊號處师 ’且訊號處理請乃針對被絲為噪音之聲音訊麵出, 訊號至揚聲器40。 、、再者’’上述本體30另具有一導音管35，且導音管^ 一端係 連通於腔室3卜另-端即為出音口 32，在導音管％之出音口幻 處設置有-阻尼件36以阻絕沙塵的進入，而導音管％外則套設 有-耳塞件37 ’耳縣37係義具彈性之麵以製成，方用又 者配載聲學傳祕置3時，得以藉由耳塞件π塞人至耳道當中。 另外，在本實施例當中，控制麥克風5〇選擇性地與腔室Η 或入音口 33連通的技術，乃是透過設置在腔室31與入音口 33之 間的一開關70所達成’且開關上設置有一第-通道71及一第 一通道72’當移動開關7〇至一第一位置時，第_通道71係與腔 至^及容置空間34連通’並使得麥克風5〇得以接收腔室幻内 之聲音訊號，而當移動開關7〇至一第二位置時，第二通道71係 與入音口 33及容置空間34連通，並使得麥克風5〇得以接收入: 口 33之聲音訊號。 曰 請參照第3圖及第4圖所*，為本發明第一實施例之聲學傳 感I置開關位於第-位置時之.示意圖及本發明第_實施例之聲學 傳感裝置開關位於第二位置時之示意圖。在第3圖當中，開關二 在第-通道71的兩側設置有_對第—接酿A，而在第二通道乃 的兩側亦設置有-對第二接點組Β，糾，本體3〇在容置空 連通至腔室31的路徑兩側係對應於第—接點組Α㈣置有—I第 三触組c，在容置空間34連通至人音口 33的路徑兩側則對應 於弟二接點組Β而設置有—對細接齡d，第三接點組C係電 性連接至訊號處理器60之-第五接點E，第四接點組d則電性^ 接至訊號處理器60之一第六接點J?。 當開關70移動至使第一通道71與腔室31及容置空間^ ^ 通時’將使得容置節4與人音D 33非為連通，此時麥克風$ 乃是直接接收腔室31中由揚聲器4〇所發出之聲音訊號，也㈤ 在消噪技術當中_的「後饋式_」，此時第—接點組Α與第二 接點組C雜躺，域細祕理㈣之第五接點£接受到一 電訊號，到咖號處理器㈣部電路的運作，並進而針對揚聲 器40所發出聲音訊號當朽_為噪音的部份，再產生—反向聲 波以抵_音；反之，㈣4 _*，當_ 7_至使第二 通道72與入音〇 33及容置空間34連通時，將使得容置空間^ 與腔室31非為連通，此時麥克風5〇乃是直接接收外界的聲音訊 號，也就是在消噪技術當中所謂的「前饋式消噪」，此時第二接點 組Β與第四接點組D電性接觸，且使得訊號處理器6〇之第六接 點F接收W另-電訊號’而驅動訊號處理器6Q内部電路的運作， 並進而針封外界聲音訊號當中被定義為噪音的部份，再產生—反 向聲波以抵消掉噪音。 承如以上所述，本翻聲學舰裝置3藉由關％的移動， 即可在前饋式轉與後饋式消噪兩_式下切換，而得以在不同 的聲音品質要求下自行調整至所需求的狀態。 請參照第5圖所示，為本發明第二實施例之聲學傳感裝置之 剖面示意圖。此實施例與前述實施例之差異處，係在於此實施例 本體30之容置空間34有足狗的寬度讓麥克風5〇在裡面滑移，而 在腔室31與入音口 33之間係自本體3〇上延伸設有一擋塊％，由 於麥克風50收音面朝上，當圖巾所示麥克風％移至容置空間％ 的左邊時’因為擒塊38阻擋了麥克風5Q與腔室31的連通，因此 僅能接收外界的聲音喊，此時聲學傳感裝置3係呈前饋式消噪 模式；反之，當麥克風5〇移至容置空間Μ的右邊時，因為擋塊 38阻擋了麥克風5〇與入音口 ％的連通，因此僅能接收腔室η 内的聲音訊號，此時聲學傳感裝置3係呈後饋式消噪模式。 此貝細*例藉由移動麥克風5〇即可達到在前饋式消噪或後饋式 消°呆之間诚的技術’然而移動麥克風％以與訊航理器6〇電 性接觸亚驅動之關係，係可參考第3圖及第.4圖之設計，其乃為 熟悉電路設計麵驗㈣合似，故在此即抑關式或文字 贅述之。 请蒼妝第6圖所示，為本發明第三實施例之聲學傳感裝置之 剖面不思圖。此實施例與前述實施例之差異處，係在於此實施例 中主體30延伸設有一軸39以供一承載件80樞設，而承載件δ〇 上係設置有至少-個凹槽81以供容置麥克風5Q，另外，承載件 80乃是透過一軸承82以枢設於主體3〇。 當承載件80轉動至如圖中所示軸39的左邊時，表示麥克風 5〇僅與外界連通並接收外界的聲音訊號，此時聲學傳感裝置3係 壬則饋式消。喿模式；反之，若承載件8〇轉動至軸39的右邊時， 著示麥克風5〇僅與腔室3丨連通並接收揚聲器4〇的聲音訊號，此 時聲學傳缝置3係1*彳纽式、;肖。雜式。 此貝加例藉由轉動承載件8〇而使麥克風5〇連通於外界或腔 室31 ’如此即可達到在_式消噪.或後饋式消噪之間切換的技 術’然而移動麥克風％讀訊號處理器6〇 f性接觸並驅動之關 係係可蒼考第3圖及第4圖之設計，其乃為熟悉電路設計者所 能輕易配合修改，故在此即不另以圖式或文字贅述之。 取後在此必須說明的是，上述聲學傳感裝置3當中的揚聲器 4〇係舉例為動圈式揚聲器，然將之替換為動鐵式揚聲器亦不影響 本毛明所⑨達成之功效；另外，上述訊號處理器 60 在第 2、5、6 圖田中皆设置在本體3〇内緊鄰揚聲器4〇，然訊號處理器6〇亦可 1376164 准此改變尚不致影響其對 依便用者之窩求而改設計於本體3〇外， 消噪技術之處理。 綜合上述，本發明聲學傳感裝置之麥 於腔室以接收揚聲器之聲立 、▲…轉性地連通 接收揚聲器聲音訊號時係得與訊號處理器形成 交貝式心叙式，因此，無論是產製者或消費者，可以在生產 時或使料自銳據所需麵聲音表絲枚轉切換前饋模式 或後饋极式’例如為了聽高誠生共振衰減之情科，係得選 擇將聲學傳㈣置娜為_式料獻。 以上所述鶴舉例性’㈣域制性者。任何未脫離本發明 之精神與！^，而對其進行之修妓變更，均應包含於後附 之申請專利範圍中。 【圖式簡單說明】 第1A圖為本發明第—較佳實施例之剖面示意圖； 第1B圖為本發明第二較佳實施例之剖面示意圖； =2圖為本發明第—實施例之聲學傳感裝置之剖面示意圖； 卑3圖為本發明第—實施例之聲學傳感裝置開關位於第一位置時 之示意圖； 卑4圖為本發明第—實施例之聲學傳感裝置開關位於第二位置時 之示意圖； 第5圖為本發明第二實施例之聲學傳感裝置之剖面示意圖；以及 第6圖為本發明第三實施例之聲學傳感裝置之剖面示意圖。· 【主要元件符號說明】 1 耳機 10 麥克風 11 消噪電路 12 揚聲器 2 耳機 20 麥克風 21 消噪電路 22 揚聲器 3 聲學傳感裝置 30 本體 31 腔室 32 出音口 33 入音口 34 容置空間 35 導音管 36 阻尼件 37 耳塞件 38 擋塊 39 車由 40 揚聲器 50 麥克風 60 訊號處理器 70 開關 71 第一通道 72 第二通道 80 承載件 81 凹槽 82 軸承 A 第一接點組 B 第二接點組 C 第三接點組 D 第四接點組 E 第五接點 F 第六接點 12The twist of the _ (four) sound material to do the noise cut green big difference L's directionality is very strong, so it is difficult to use the same - outside ... noise cancellation requirements. Speaking of 4 noise from different directions ^, for the feed-back type headphone 2 >, 2 is also equipped with a microphone 2. - light circuit 21 and - speaker 22 = state 22 is toward the user's ear canal, microphone) ear n ± gram wind 20 is set in the speaker 22 and the ear canal =, therefore the microphone 2G receives and noise in the ear shell The human ear hears - the branch 'and the thinness _ by the noise canceling circuit 21 to smash the beer and smash the oil ^ 虑 / wave amplification and phase change and then drive the sound 2, the hair 荦, the design of the closed loop system, the microphone 20 The direction of the noise is sensitive, and because of the feedback signal and the sound signal, it stands out, and the wooden seat is... The car 曰乜 or 1 宜加俊 can produce a high signal-to-noise ratio so that the noise is heard when it is read to the human ear. The machine has a better noise canceling effect, however, since the microphone 2 is in the ear, 1 is given to the 四 (4) 鄕1 and in front of the speaker 22; the ff resonance is attenuated by the machine, and the original sound machine is reversed. Make [invention content]. In view of the above problems, the object of the present invention is to provide an integrated noise-reducing chip, and the short-term (four) two different types of hail are the above-mentioned objects. The acoustic sensing device of the present invention comprises a body, a speaker, a microphone and - Signal processing It. The body has a chamber, an outlet D and an input port, and the chamber is connected to the sound outlet. The speaker is arranged in the chamber and the sound generated by the rotation is outputted from the sound σ to the outside, and the microphone is disposed on the body. Adjacent to the position of Yangsheng 1 §, it can be selectively connected to the mouth of the cavity. The signal is also connected to the shoes and the microphone. When the microphone is connected to the chamber, the microphone is reduced. The audio signal is transmitted to the signal (4), and the signal processing target is defined as. The sound signal output of the sound is reversed to the speaker, and vice versa. When the microphone is connected to the human voice port and no longer communicates with the chamber, the microphone is changed to receive the external voice and sent to the weaving position, and the signal is directed to An audio signal that is derogatory as a noise emits an inverted signal to the speaker. Since the microphone of the acoustic sensing device of the present invention is selectively i is also connected to the chamber to receive the voice of the speaker n, or is connected to the outside world to receive the external voice signal 'receiving the external voice cake and the signal Processing n forms a feedforward type of cancellation mode, and when receiving a speaker sound signal, it forms a feedforward mode with the signal processor. Therefore, whether it is a producer or a consumer, it can be used at the time of production or use. It is decided to adjust the switching feedforward mode or the feedforward mode according to the required sound performance. [Embodiment] An acoustic sensing device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. Referring to Fig. 2, there is shown a cross-sectional view of U76164 of the acoustic sensing device of the first embodiment of the present invention. The figure shows the acoustic sensing—the original meaning, the county n 4G, the microphone 5G, which includes 30 right... The Tiger processor 60; the body, an audio port 32 and an audio cassette 33, and the chamber 31 and The sound is connected to the ground, the shoe 4Q is disposed in the chamber 31, and the microphone is just one, the plate is adjacent to the speaker 40, and the accommodation space is 34. 50, the optional neodymium chamber 31 or the human voice σ, Erya And Mai brother wind shift: ts: 'Signal processor 60 electrical ^ in the microphone 40 and microphone 5 〇, when the microphone 5 〇 disk cavity wind 50 receiving the sound in the chamber 31 ~ - k pass, wheat 〇, . 4 曰 signal is transmitted to the signal processor 6〇, and the signal is 60 (4) is defined as the voice / 簦 cry μ = han out an inverted signal to Yang I when the microphone 50 and the sound port 33 connected, and no longer with the chamber 31 = handle 'microphone 5 〇 to receive the external voice signal to be transmitted to the signal division' and the signal processing is for the sound of the sound of the wire, the signal to the speaker 40 . Further, the above-mentioned body 30 further has a sound guiding tube 35, and one end of the sound guiding tube ^ is connected to the chamber 3, and the other end is the sound outlet 32, and the sound is audible in the sound guiding tube. There is a damping member 36 to prevent the entry of sand dust, and the outer portion of the sound guiding tube is sleeved - the earplug member 37 ' ear county 37 system is made of elastic surface to make it, and the other is equipped with acoustic transmission. When the secret is 3, it is possible to plug the person into the ear canal by the earplugs. Further, in the present embodiment, the technique of controlling the microphone 5 to selectively communicate with the chamber 或 or the sound inlet 33 is achieved by a switch 70 provided between the chamber 31 and the sound inlet 33. And the switch is provided with a first channel 71 and a first channel 72'. When the switch 7 is moved to a first position, the first channel 71 is connected to the cavity to the accommodating space 34 and allows the microphone 5 to be The sound signal of the chamber is received, and when the switch 7 is moved to a second position, the second channel 71 is connected to the sound inlet 33 and the accommodating space 34, and the microphone 5 is received: The sound signal. Referring to FIG. 3 and FIG. 4, the acoustic sensing I switch of the first embodiment of the present invention is located at the first position. The schematic diagram of the acoustic sensing device of the first embodiment of the present invention is located at the first embodiment. Schematic diagram of the second position. In the third figure, the switch 2 is provided with _ pairs of the first connection on both sides of the first channel 71, and on the two sides of the second channel is also provided with - the second contact group Β, correction, body 3〇 The two sides of the path connecting the space to the chamber 31 correspond to the first contact group Α (4), and the third contact group c is disposed, and the two sides of the path connecting the accommodating space 34 to the human sound port 33 are Corresponding to the second contact group 设置, there is a pair of fine connection age d, the third contact group C is electrically connected to the signal processor 60 - the fifth junction E, and the fourth contact group d is electrically ^ Connect to the sixth contact J? of one of the signal processors 60. When the switch 70 is moved to make the first passage 71 communicate with the chamber 31 and the accommodating space, the accommodating section 4 and the human voice D 33 are not in communication, and the microphone $ is directly received in the chamber 31. The sound signal emitted by the speaker 4〇 is also (5) in the “follow-up _” of the noise canceling technology. At this time, the first contact group Α and the second contact group C are lying, and the domain is fine (4). The fifth contact £ receives a signal to the operation of the circuit of the coffee processor (four), and further generates a sound signal for the speaker 40 as a part of the noise, and then generates a reverse sound wave to the sound. Conversely, (4) 4 _*, when _ 7_ is connected to the input channel 33 and the accommodating space 34, the accommodating space ^ is not connected to the chamber 31, and the microphone 5 It is a direct receiving external sound signal, that is, a so-called "feedforward type noise canceling" in the noise canceling technology. At this time, the second contact group 电 is in electrical contact with the fourth contact group D, and the signal processor 6 is caused. The sixth contact F of the 接收 receives the W--signal' and drives the internal circuit of the signal processor 6Q, and then seals the external voice. The part defined as noise is re-generated to reverse the noise. As described above, the oscillating acoustical device 3 can be switched between the feedforward type and the feedforward type of noise canceling by the % movement, and can be adjusted to different sound quality requirements to The state of demand. Referring to Figure 5, there is shown a cross-sectional view of an acoustic sensing device in accordance with a second embodiment of the present invention. The difference between this embodiment and the foregoing embodiment is that the accommodating space 34 of the body 30 of this embodiment has a width of a foot for the microphone 5 to slide inside, and between the chamber 31 and the sound inlet 33. A stopper % is extended from the body 3〇. Since the microphone 50 is facing upward, when the microphone % shown in the towel moves to the left of the accommodating space%, 'because the cymbal block 38 blocks the microphone 5Q and the chamber 31. Connected, so only can receive the external voice shouting, at this time the acoustic sensing device 3 is in a feedforward type noise canceling mode; conversely, when the microphone 5 is moved to the right side of the housing space ,, because the stop 38 blocks the microphone 5〇 is connected to the input port %, so only the sound signal in the chamber η can be received. At this time, the acoustic sensing device 3 is in the feed-back mode. This case can be achieved by moving the microphone 5 〇 to achieve the technology between feedforward denoising or feed-back mode. However, the mobile microphone is in contact with the aircraft 6 〇 electrically contact sub-driver The relationship can be referred to the design of Figure 3 and Figure 4. It is familiar with the circuit design (4). Therefore, it is a closed-ended or textual description. Please refer to Fig. 6, which is a cross-sectional view of the acoustic sensing device of the third embodiment of the present invention. The difference between this embodiment and the foregoing embodiment is that in the embodiment, the main body 30 is extended with a shaft 39 for pivoting a carrier member 80, and the carrier member δ is provided with at least one groove 81 for The microphone 5Q is accommodated. In addition, the carrier 80 is pivotally mounted to the main body 3 through a bearing 82. When the carrier 80 is rotated to the left of the shaft 39 as shown in the figure, it indicates that the microphone 5 is only in communication with the outside and receives an external sound signal, and the acoustic sensing device 3 is then fed.喿 mode; conversely, if the carrier member 8 turns to the right side of the shaft 39, the display microphone 5 〇 is only in communication with the chamber 3 并 and receives the sound signal of the speaker 4 ,, at this time, the acoustic splicing is set to 3 1 1* 彳New style, Xiao. Miscellaneous. In the case of the Beiga, the microphone 5 is connected to the outside or the chamber 31 by rotating the carrier 8 to achieve a technique of switching between _ type noise reduction or feed-back noise cancellation. The relationship between the reading signal processor and the driving and driving is the design of the third and fourth pictures, which can be easily modified by the familiar circuit designer, so that no other figure or The text is described in detail. It should be noted here that the speaker 4 in the above acoustic sensing device 3 is exemplified as a moving coil speaker, and replacing it with a moving iron speaker does not affect the effect achieved by the present invention; The signal processor 60 is disposed in the second, fifth, and sixth fields in the body 3〇 in the vicinity of the speaker 4〇, and the signal processor 6〇 can also be 1376164, and the change does not affect the nest of the user. The design is applied to the body 3, and the noise cancellation technology is processed. In summary, the microphone of the acoustic sensing device of the present invention receives the sound signal of the speaker, and rotatively communicates with the receiving device to form a symmetry with the signal processor, so that The producer or the consumer can switch the feedforward mode or the feedforward mode at the time of production or from the sound surface of the desired surface. For example, in order to listen to the emotional decay of Gao Chengsheng resonance, the choice is to choose acoustics. Pass (four) set Na for the _ formula. The above-mentioned crane is exemplified by the '(4) domain system. Anything without departing from the spirit of the invention! ^, and the modifications made to it should be included in the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a cross-sectional view showing a first preferred embodiment of the present invention; FIG. 1B is a cross-sectional view showing a second preferred embodiment of the present invention; Schematic diagram of a sensing device; FIG. 3 is a schematic view of the acoustic sensing device switch of the first embodiment of the present invention in a first position; FIG. 4 is a second embodiment of the acoustic sensing device of the first embodiment of the present invention FIG. 5 is a schematic cross-sectional view showing an acoustic sensing device according to a second embodiment of the present invention; and FIG. 6 is a cross-sectional view showing the acoustic sensing device according to a third embodiment of the present invention. · [Main component symbol description] 1 Headphone 10 Microphone 11 Noise canceling circuit 12 Speaker 2 Headphone 20 Microphone 21 Noise canceling circuit 22 Speaker 3 Acoustic sensing device 30 Body 31 Chamber 32 Sound outlet 33 Input port 34 accommodating space 35 Sound tube 36 Damping member 37 Ear plug member 38 Stop block 39 Vehicle 40 Speaker 50 Microphone 60 Signal processor 70 Switch 71 First channel 72 Second channel 80 Carrier 81 Groove 82 Bearing A First contact group B Second Contact group C Third contact group D Fourth contact group E Fifth contact F Sixth contact 12