M338521 八、新型說明： 【新型所屬之技術領域】 本創作係有關於一種微型揚聲裝置，更詳而言之，係 有關於一種整合濾波電路及功率調整電路之微型揚聲裝 置。 " 【先前技術】 隨著科技的進步與人類對於生活品質需求的提升，附 -帶音響功能的產品已逐漸遍及生活上的電子產σ。 鲁能將聲音輸出之裝置稱為揚聲器。揚聲器是一種口把電能轉 為機械振動再擾動空氣變成聲音的「換能器」，電子產品 可透過揚聲器發出各種聲音，以滿足人類^覺上的需求 一般常見使用揚聲器的電子裝置如電話、音響、隨身聽盥 蜂鳴器··等等。 另一方面，為了方便攜帶使用，電子產品尺寸之設叶 愈來愈小，連帶使作為聲音輸出之揚聲器也必須愈來愈 ❿小古支微型揚聲裝置應運而生。微型揚聲裝置係一種體積 極】之I聲裝置’通常係10立方公分以下以下，甚至5立 •方公分以下。 目前市面上之微型揚聲裝置，僅有將電氣訊號轉換完 能，至於輸出聲音的品f好壞，完成由連接於微 ❻聲衣置前端之電子裝置來決定，也就是說不管是什麼 =電氣訊號輸人微型揚聲裝置，微型揚聲裝置就必須將 =錢_換為聲音並㈣，如此存紅下的缺點需要 改進。 5 M338521 • 電氣訊號通常會伴隨雜訊或干擾信號，微型揚聲裝置 •將具有雜訊之電氣訊號轉換為聲音並輸出時會有失真現 象產生，使得人類無法順利聽到正確且令人感到舒適的聲 音，甚至完全不了解輸出聲音所要表達的涵義。 另外，由於人類耳朵的聽覺頻率範圍為2〇Hz到 20000Hz之間，依據不同的年齡、情緒、個人體質不同合 有些微的差距。若微型揚聲裝置所接收之電氣訊號超過此 •頻率範圍’將該訊號轉換之聲音輸出人耳並無法接收。 通常解決方式是於揚聲器前端加襄一滤波器，較常見 的濾波器種類有四種：低通遽波器，可使低於特定頻率之 訊號通過並衰減該頻率以上之訊號；高通遽波器，可使高 於特定頻率之訊號通過並衰減該頻率以下之訊號；帶通遽 波器，可使特定頻段之訊號通過並衰減頻段外之訊號；帶 拒濾、波器’可衰減敎頻段之訊號並使頻段外之訊號通 過。 • 酉己合人耳之聽覺特性’較常使用的為帶通濾波器與帶 拒^皮H。帶通濾、波器可將輸人信號頻率限制在人耳可接 收的範圍内，而帶拒濾波器則可以消除特定頻率之雜訊， !揚聲器前端之裝置不-定會配置此濾波器，如此會造成 揚聲器之運作效能非常差。 再問題’微型揚聲裝置本身所能承受的輸入訊號 ”有定的限度，當微型揚聲裝置前端之電子裝置將過 大^率的電氣訊號輸入微型揚聲裝置時，即可能會影響微 3L揚聲衣置運作或是造成其損壞，當微型揚聲裝置前端之 6 M338521 -電子裝置將過小功率的電氣訊號輸入微型揚聲裝置時，其 所轉換出來的聲音強度太小，可能會使人耳聽不清楚或甚 至完全聽不到。 綜上所述，如何能提供一種高性能並兼具較高可靠度 之微型％聲灰置，遂成為目前亟待解決的課題。 【新型内容】 - 為解決成述習知技術之缺失，本創作提供一種整合濾 .波電路及功率調整電路之微型揚聲裝置，其係將滤波電路 鲁及功率調整電路整合於一微型揚聲裝置，使得聲音輸入訊 唬可藉由濾波電路過濾干擾雜訊以獲得人耳聽感範圍之 特定頻段訊號’並且利用功率調整電路調整聲音輸出訊號 之功率。 本創作之鲨合濾波電路及功率調整電路之微型揚聲 裝置，係包括··訊號遽波模組，係用以對接收之聲音訊號 進行滤波’並輸出特定頻率之聲音訊號；功率調整模組， 系用=對„亥特疋頻率之聲音訊號進行功率放大或衰減；以 -及揚耳益杈組，係用以將放大或衰減之聲音訊號輸出，其 .中’該整合缝電路及功率調整電路之微型揚聲裝置之體 積為ίο立方公分以下。 相較於習知的微型揚聲裝置，本創作之整合濾波電路 =功率調整電路之微型揚聲裝置，能透過訊號濾波模組過 =干擾雜訊’並依據使用者不同需求以獲得特定頻段之訊 或依。人耳聽感範圍之特性作訊號遽、波模組設計，使輸 入揚耳為之聲音訊號有效率的轉換成人耳聽感範圍内。又 7 -M338521 -利用功率調整電路調整聲音輸出訊號之功率。功率調 路依據不同裝置最大輸出訊號之功率與揚聲器可承 功率，設計最佳放大/衰減倍率，可防止輸人訊號之功率古 於揚聲器可承受之功率導致揚聲器損壞，並將功率: 人類聽覺可察覺之範圍内。據此，能有效的提升微型 裝置之性能並兼具較高之可靠度。 •【實施方式】 以下係藉由特定的具體實施例說明本創作之實施方 •式，熟悉此技術之人士可由本說明書所揭示之内容輕易地 瞭解本創作之其他優點與功效。本創作亦可藉由其他不同 的具體實施例加以施行或應用，本說明書中的各項細節亦 可基於不同觀點與應用，在不悖離本創作之精神下進行各 種修飾與變更。 請參閱第1圖，其係用以顯示本創作之整合渡波電路 及功率調整電路之微型揚聲裝置之裝置架構圖。如第i 鲁圖所示’本創作之整合濾波電路及功率調整電路之微型揚 聲裝置1包括訊號滤'波模組11，功率調整模組12與揚聲 -器模組13。 ~ 訊號濾波模組11係用以針對所接收之輸入聲音訊號 進行濾波，並輸出特定頻率之聲音訊號，依據使用者不同 u 需求，訊號接收模組可為低通濾波器、高通濾波器、帶通 濾波器、帶拒濾波器或其他相類似之濾波器。 功率調整模組12係用以對該特定頻率之聲音訊號進 行功率放大或衰減，於本實施例中，係使用運算放大器， 8 -M338521 -藉由調整其輸出增益的大小，放大或衰減信號電壓，以獲 得符合微型揚聲裝置操作範圍之功率。 揚聲器模組13係用以將聲音訊號（通常為電氣訊號） 轉換成音頻聲響。其中，揚聲器模組13可由複數個揚聲 器組成，且複數個揚聲器之間可使用排線、絞線、單芯線、 多芯線、軟質印刷電路板、連接插頭、硬質印刷電路板、 •積體電路或其他相類似之方式相互連接。 - 於本實施例中，本創作之整合濾波電路及功率調整電 ♦路之微型揚聲裝置可應用於具有音樂播放功能之行動電 話中，當订動電話之音樂播放模組或處理單元將 傳送至訊號遽波模組此處為一帶通遽波器）心 ，訊號濾波模組11將聲音訊號限制於人耳可接受之頻率 乾圍内，再以功率調整模組12進行功率放大或衰減，若 輸入功率已大於揚聲器模組13可承受之額定功率範圍， :衰減輸出至揚聲器模組13之功率，以避免損壞揚聲器 _拉組13，若輸入功率太小無法驅動揚聲器模組13，則放 功率使揚聲器模組13能輸出聲音。包含上述模組之整 -合濾波電路及功率調整電路之微型揚聲裝置體績係於1〇 立方公分以下。更佳地係於5立方公分以下。 請參閱第2圖，於本創作之一較佳的實施例中，本創 作之整合濾波電路及功率調整電路之微型揚聲装置復包 括射頻濾波模組14,其係用以衰減或消除耦合於聲音訊 號之射頻干擾訊號。射頻濾波模組14係連接於功率調整 核組12與揚聲器模組13之間，當聲音訊號受到射頻訊號 9 M338521 干擾時，射頻濾波模組14能衰減或甚至消除射 擾，使揚聲器模組13輸出聲音時不會受射頻訊號影:。 請參閱第3圖，於本創作之一更佳的實施例中% 作之整合濾波電路及功率調整電路之微型揚聲竽置」 括電源切換模組15，其係用以根據電源控制訊號開 閉電源供應。當電源切換模組15開啟電源供應時，& 整個微型揚聲裝置獲得運作時所需要的電能以進行=音 輸出，當電源切換模組15關閉電源供應時，微型揚聲裝 置因無法獲得運作所需的電能而停止動作（停止輸= 音）。此種操作模式的一個優點在於可阻擋某些不希望人 耳聽見之聲音訊號輸出。舉例來說，如前述之行動電話可 能會因為執行某些功能（如開啟電源）造成訊號突波或干 擾、，此時揚聲器輸出的聲音通常會使人耳感到不舒服，然 而透過電源切換模、组15 _閉電源使微型揚聲裝置停止運 作，即可隔絕此類聲音的輸出。另一個優點在於當行動電 籲話不使用聲音輸出功能時，復可透過電源切換模組Η關 閉供應給微型揚聲裝置的電源，待需要聲音輸出時再開啟 電源供應，如此能有效節省電力浪費。除應用在行動電話 外:亦可應用於其他攜帶型電子裝置如筆記型電腦、隨身 聽等’俾提高其待機時間。 “明參閲第4圖，其係為本創作之微型揚聲裝置整合於 電路板之具體實施電路圖，如第4圖所示，訊號濾波模 、、且Π功率调整模組12、射頻濾波模組14與電源切換模 組係登合於電路板2 H述之減濾、波模組11，功率 10 M338521 •调整模組12，電源切換模組丨5以外，在其他實施例中亦 可將訊號濾波模組11，功率調整模組12，揚聲器模組13, 射頻濾波模組14及/或電源切換模組15整合於電路板2。 電路板2可例如為硬質印刷電路板、軟質印刷電路 板、積體電路板或其他相類似之電路板。電路板2可透過 排線、軟性電路板或連接插頭，以接收聲音訊號、電源輸 -入訊號、電源控制訊號及/或其他種類訊號。本實施例中 _係使用排線21來接收聲音訊號、電源輪入及電源控制訊 φ號。 電路板2中包括運算放大器晶片2〇、電阻（IU—R4)、 電容（Cl-C5)以及電感（L1，L2)，整合成一具有帶通濾波功 能、功率放大功能、射頻濾波功能及電源切換功能之裝 置。電源藉由排線21輸入至該電路板2，可供給整個微 型揚聲裝置裝置之運作。GND(TP5)為接地端，係作為整個 微型揚聲裝置各個元件的接地使用。SHUTDOWN(TP2)為電 源控制信號之輸入端，運算放大器晶片2〇可依據不同電 -源控制信號開始或停止放大器運作，以達到上述電源切換 的功能。AUDIO INKTP3)與AUDIO IN-(TP4)為兩個相反 相位之聲音訊號輸入，藉由電路板2的處理，可輸出極佳 的聲音，詳細說明如下。 電路板2之電路係由運算放大器晶片2〇、電阻 〜R4、電容C卜C5與電感LI、L2所組成。此外，電容 C7係作為運算放大器晶片20之旁路電容，係用於當運算 放大器晶片20工作時提供直流穩壓的效果。電容eg係連 11 -M338521 輸入電源濾波的 接於電源輸入與接地端之間，係用於提供 效果。M338521 VIII. New Description: [New Technology Field] This creation is about a miniature speaker device. More specifically, it is a miniature speaker device that integrates a filter circuit and a power adjustment circuit. " [Previous technology] With the advancement of technology and the improvement of human needs for quality of life, the products with audio functions have gradually spread throughout the electronic production of σ. Luneng refers to the device that sounds output as a speaker. A speaker is a "transducer" that converts electrical energy into mechanical vibration and then disturbs the air into sound. The electronic product can emit various sounds through the speaker to meet the needs of human beings. Generally, electronic devices such as telephones and stereos are commonly used. , Walkman, buzzer, etc. On the other hand, in order to be convenient to carry and use, the size of the electronic product has become smaller and smaller, and the speaker that is used as the sound output has to be increasingly small and small. The micro-speaker device is a volumetric I-sound device' usually less than 10 cubic centimeters or less, even 5 centimeters or less. At present, the mini-speaker device on the market only converts the electrical signal, and the output of the sound is good or bad. The completion is determined by the electronic device connected to the front end of the micro-sounding garment, that is, no matter what = When the electrical signal is input into the miniature speaker device, the miniature speaker device must change the = money_ to the sound and (4), and the shortcomings of such redness need to be improved. 5 M338521 • The electrical signal is usually accompanied by noise or interference signals. The miniature speaker device • converts the electrical signal with noise into sound and produces distortion when output, making it impossible for humans to hear the correct and comfortable The sound, even at all, does not understand the meaning of the output sound. In addition, since the hearing frequency of the human ear ranges from 2 〇 Hz to 20,000 Hz, there are slight differences depending on different ages, emotions, and personal physique. If the electrical signal received by the miniature speaker exceeds this • frequency range, the sound converted by the signal is output to the human ear and cannot be received. The usual solution is to add a filter to the front end of the speaker. There are four types of filters that are more common: low-pass chopper, which can pass signals below a certain frequency and attenuate signals above the frequency; high-pass chopper , the signal above a certain frequency can pass and attenuate the signal below the frequency; the band pass chopper can pass the signal of a specific frequency band and attenuate the signal outside the frequency band; with the filter, the filter can attenuate the frequency band The signal and the signal outside the band pass. • The hearing characteristics of the human ear are more commonly used as bandpass filters and tape rejection. The bandpass filter and the waver can limit the input signal frequency to the range acceptable to the human ear, and the band rejection filter can eliminate the noise of the specific frequency. The device at the front end of the speaker does not configure the filter. This will cause the speaker to operate very poorly. The problem is that the input signal that the micro-speaker itself can withstand has a certain limit. When the electronic device at the front end of the micro-sound device inputs the electrical signal of the excessively large rate into the micro-sound device, it may affect the micro-Lang Yang. When the sound garment is operated or damaged, when the 6 M338521-electronic device at the front end of the miniature speaker device inputs the low-power electrical signal into the miniature speaker device, the converted sound intensity is too small, which may make the ear In summary, how to provide a high-performance and high-reliability micro-sound ash set has become an urgent problem to be solved. [New content] - To solve In the absence of the conventional technology, this creation provides a miniature speaker device that integrates the filter wave circuit and the power adjustment circuit, which integrates the filter circuit and the power adjustment circuit into a miniature speaker device, so that the sound input signal is The interference noise can be filtered by the filter circuit to obtain a specific frequency band signal of the human hearing range and the sound output signal is adjusted by the power adjustment circuit Power. The miniature speaker device of the shark filter circuit and the power adjustment circuit of the present invention includes a signal chopping module for filtering the received audio signal and outputting a sound signal of a specific frequency; power adjustment The module is used to power amplify or attenuate the sound signal of the Heteron frequency; the - and the Yangeryi group are used to output the amplified or attenuated sound signal, and the 'integrated stitch circuit And the volume of the micro-speaker of the power adjustment circuit is less than cubic centimeters. Compared with the conventional miniature speaker device, the integrated filter circuit of the present invention = the miniature speaker device of the power adjustment circuit can pass the signal filtering module to pass the interference noise and obtain the specific frequency band according to different needs of the user. News or by. The characteristics of the human ear listening range are designed as signal 遽 and wave modules, so that the input ear can be effectively converted into the range of the adult ear. 7 -M338521 - Use the power adjustment circuit to adjust the power of the sound output signal. The power regulation is based on the power of the maximum output signal of different devices and the power of the speaker. The optimal amplification/attenuation ratio is designed to prevent the power of the input signal from being damaged by the power that the speaker can withstand, and the power is: human hearing. Within the scope of detection. According to this, the performance of the micro device can be effectively improved and the reliability is high. • [Embodiment] The following describes the implementation of the present invention by a specific embodiment, and those skilled in the art can easily understand other advantages and effects of the present invention by the contents disclosed in the present specification. The present invention can also be implemented or applied by various other specific embodiments. The details of the present specification can also be modified and changed without departing from the spirit of the present invention. Please refer to FIG. 1 , which is a block diagram showing the device structure of the integrated sound wave circuit and the power adjustment circuit of the present invention. The micro-sound device 1 of the integrated filter circuit and the power adjustment circuit of the present invention includes a signal filter wave module 11, a power adjustment module 12 and a speaker module 13 as shown in the i-th diagram. The signal filtering module 11 is configured to filter the received input audio signal and output an audio signal of a specific frequency. The signal receiving module can be a low pass filter, a high pass filter, and a band according to different u requirements of the user. Pass filter, reject filter or other similar filter. The power adjustment module 12 is configured to perform power amplification or attenuation on the audio signal of the specific frequency. In this embodiment, an operational amplifier, 8 - M338521 - is used to amplify or attenuate the signal voltage by adjusting the magnitude of the output gain. To obtain power that meets the operating range of the miniature speaker. The speaker module 13 is used to convert an audio signal (usually an electrical signal) into an audio sound. The speaker module 13 can be composed of a plurality of speakers, and a plurality of speakers can be used between a plurality of speakers, a stranded wire, a single core wire, a multi-core wire, a flexible printed circuit board, a connection plug, a hard printed circuit board, an integrated circuit or Other similar ways are connected to each other. - In this embodiment, the integrated filter circuit of the present invention and the micro speaker device of the power adjustment circuit can be applied to a mobile phone having a music playing function, and the music playing module or processing unit of the mobile phone will transmit The signal chopping module 11 is a bandpass chopper, and the signal filtering module 11 limits the audio signal to a frequency range acceptable to the human ear, and then performs power amplification or attenuation by the power adjustment module 12. If the input power is greater than the rated power range that the speaker module 13 can withstand, the power output to the speaker module 13 is attenuated to avoid damage to the speaker_pull group 13. If the input power is too small to drive the speaker module 13, the speaker module 13 is placed. The power enables the speaker module 13 to output sound. The performance of the miniature speaker device including the integrated-integrated filter circuit and the power adjustment circuit of the above module is less than 1 cm cubic centimeter. More preferably, it is below 5 cubic centimeters. Referring to FIG. 2, in a preferred embodiment of the present invention, the integrated speaker circuit and the power adjustment circuit of the present invention comprise a radio frequency filter module 14 for attenuating or eliminating coupling. Radio frequency interference signal of audio signal. The RF filter module 14 is connected between the power adjustment core group 12 and the speaker module 13. When the audio signal is interfered by the RF signal 9 M338521, the RF filter module 14 can attenuate or even eliminate the interference, so that the speaker module 13 When the sound is output, it will not be affected by the RF signal: Referring to FIG. 3, in a preferred embodiment of the present invention, the integrated filter circuit and the power adjustment circuit of the miniature speaker device include a power switching module 15 for opening and closing according to the power control signal. power supply. When the power switching module 15 turns on the power supply, the entire miniature speaker device obtains the power required for operation to perform the sound output, and when the power switching module 15 turns off the power supply, the micro speaker device cannot be operated. Stop the action with the required power (stop the input = tone). One advantage of this mode of operation is that it blocks the output of certain undesired sound signals. For example, if the mobile phone mentioned above may cause signal surge or interference due to performing certain functions (such as turning on the power), the sound output from the speaker usually makes the human ear feel uncomfortable. Group 15 _ closed power allows the micro speaker to stop operating and isolates the output of such sounds. Another advantage is that when the action call does not use the sound output function, the power supply switching module can be turned off to turn off the power supply to the micro speaker device, and then the power supply is turned on when the sound output is required, thereby effectively saving power waste. . In addition to being used in mobile phones: it can also be used in other portable electronic devices such as notebook computers, portable players, etc. to increase its standby time. "See Figure 4 for details. This is the specific implementation circuit diagram of the miniature speaker device integrated in the circuit board. As shown in Figure 4, the signal filtering module, the power adjustment module 12, and the RF filter mode. The group 14 and the power switching module are mounted on the circuit board 2H, the filter reduction, the wave module 11, the power 10 M338521, the adjustment module 12, and the power switching module 丨5, and in other embodiments, The signal filtering module 11, the power adjustment module 12, the speaker module 13, the RF filter module 14 and/or the power switching module 15 are integrated on the circuit board 2. The circuit board 2 can be, for example, a hard printed circuit board or a flexible printed circuit. A board, an integrated circuit board, or other similar circuit board. The circuit board 2 can receive sound signals, power input and output signals, power control signals, and/or other types of signals through a cable, a flexible circuit board, or a connection plug. In this embodiment, the cable 21 is used to receive the audio signal, the power supply wheel, and the power control signal φ. The circuit board 2 includes an operational amplifier chip 2, a resistor (IU-R4), a capacitor (Cl-C5), and Inductance (L1, L2), integrated into one The device has a band pass filtering function, a power amplifying function, a radio frequency filtering function and a power switching function. The power source is input to the circuit board 2 through the cable 21, and can supply the operation of the entire micro speaker device. GND (TP5) is grounded The terminal is used as the grounding of each component of the whole miniature speaker device. SHUTDOWN (TP2) is the input end of the power control signal, and the operational amplifier chip 2 can start or stop the amplifier operation according to different electric-source control signals to achieve the above power supply. The function of switching. AUDIO INKTP3) and AUDIO IN-(TP4) are two opposite phase audio signal inputs. By the processing of circuit board 2, excellent sound can be output, as detailed below. Circuit board 2 is composed of The operational amplifier chip 2 〇, the resistor 〜R4, the capacitor C 卜 C5 and the inductors LI, L2 are formed. In addition, the capacitor C7 is used as the bypass capacitor of the operational amplifier chip 20, and is used to provide DC stability when the operational amplifier chip 20 operates. The effect of the voltage is that the capacitor is connected to the 11-M338521 input power filter and connected between the power input and the ground to provide the effect.
依據使用者預先決定之帶通頻率及功率增益來設計 RC 電路（由 n，C2，C3，C4，以，R2，R3，R4 所組成）， 相位相反之音源訊號（AU_ IN+，A_則藉由排線 21輸入運算放大ϋ晶片2〇配合Rc電路進行帶通濟波及 調整功率增益，用以將聲音訊號調整至人耳接受範圍甚至 配口人耳聽覺特性最佳化輸出的聲音，並且放大或衰減訊 號功率輸出提高揚聲器使用效率及可靠度。 舉例來忒，g使用者依據人耳聽覺特性將預設頻率波 段定於F1至F2之間時，帶通濾波器會將該η至F2以外 之頻率衰減，使得最後輸入之聲音只有該η至F2頻段之The RC circuit (consisting of n, C2, C3, C4, R2, R3, R4) is designed according to the user's predetermined bandpass frequency and power gain. The opposite phase source signal (AU_IN+, A_ is borrowed) The input line 21 is input to the operational amplifier ϋ chip 2 〇 cooperates with the Rc circuit to carry the band pass wave and adjusts the power gain, and is used for adjusting the sound signal to the human ear receiving range or even the sound of the human ear hearing characteristic optimized output, and amplifying Or attenuating the signal power output to improve the efficiency and reliability of the speaker. For example, when the user sets the preset frequency band between F1 and F2 according to the human ear hearing characteristics, the band pass filter will add the η to the outside of F2. Frequency attenuation, so that the last input sound is only in the η to F2 band
訊號。當然該頻段的訊號係介於人類耳朵的聽覺頻率範圍 2〇Hz到20kHz之間。又假設揚聲器的最大承受功率為ρι 時，當輸入微型揚聲裝置之聲音訊號功率大於ρι時，就 必須將其衰減以避免揚聲器燒掉。 電路板2後端LC電路（由Ll，L2, C5所組成）係具有高 頻濾波之功能，當射頻訊號透過射頻接收器（例如天線） 干擾聲音訊號時，利用電感L1及L2之特性可阻擋高頻訊 號，故正相位聲音訊號（AUDi〇 IN+)可利用電感u阻擋高 頻雜訊輸入揚聲器22，負相位聲音訊號（AUDIO IN-)可利 用電感L2阻擒咼頻雜訊輸入揚聲器22。而電容C5係用 於當有射頻訊號干擾時，極高的頻率使C5導通，而正相 位聲音訊號與負相位聲音訊號干擾雜訊的差異性會降 12 M338521 / 低，最後將兩相位相反的聲音訊號相減時，聲音訊號會放 大而雜訊則會衰減或甚至消除，如此即可達成高頻濾波之 效果。 綜上所述，本創作之整合濾波電路及功率調整電路之 微型揚聲裝置，能透過訊號濾波模組過濾干擾雜訊，並依 據使用者不同需求以獲得特定頻段之訊號，或依人耳聽感 -範圍之特性作訊號濾波模組設計，使輸入揚聲器之聲音訊 號有效率的轉換成人耳聽感範圍内。又利用功率調整電路 籲凋整聲音輸出訊號之功率。功率調整電路依據不同裝置最 大輸出訊號之功率與揚聲器可承受之功率，設計最佳放大 /衰減倍率，可防止輸入訊號之功率高於揚聲器可承受之 功率導致揚聲斋損壞，並將功率保持在人類聽覺可察覺之 靶圍内。據此，能有效的提升微型揚聲裝置之性能並兼具 較高之可靠度。 上述實施例僅為例示性說明本創作之原理及其功 φ效L而非用於限制本創作。任何熟習此項技術之人均可在 Z違背本創作之精神及範疇下，對上述實施例進行修飾與 變化。因此，本創作之權利保護範圍，應如後述之 利範圍所列。 月 【圖式簡單說明】 第1圖係為本創作之整合濾波電路及功率調整電路 之微型揚聲裝置之一實施例的裝置架構圖； 、第2圖係為顯示於第丨圖之微型揚聲裝置包含射 波模組之另一實施例的裝置架構圖； 、“ 13 • M338521 弟3圖係為顯示於第2圖之微型揚聲裝置包含電源切 換模組之又一實施例的裝置架構圖；以及 第4圖係為本創作之微型揚聲裝置整合於一電路板 之具體實施電路圖。 [主要元件符號說明】 整合濾波電路及功率調整電路之微型揚聲裝置 11 12 13 14 15 2Signal. Of course, the signal in this band is between the human ear's auditory frequency range of 2 〇 Hz to 20 kHz. It is also assumed that when the maximum power of the speaker is ρι, when the audio signal power of the input mini speaker is greater than ρι, it must be attenuated to avoid burning of the speaker. The back-end LC circuit of the circuit board 2 (composed of Ll, L2, C5) has the function of high-frequency filtering. When the RF signal interferes with the sound signal through the RF receiver (such as the antenna), the characteristics of the inductors L1 and L2 can be blocked. High-frequency signal, so the positive phase sound signal (AUDi〇IN+) can block the high-frequency noise input speaker 22 by the inductor u, and the negative-phase sound signal (AUDIO IN-) can use the inductor L2 to block the frequency noise input speaker 22. Capacitor C5 is used to turn on C5 when there is RF signal interference, and the difference between positive phase sound signal and negative phase sound signal interference noise will drop by 12 M338521 / low, and finally the two phases are opposite. When the sound signal is subtracted, the sound signal will be amplified and the noise will be attenuated or even eliminated, so that the high frequency filtering effect can be achieved. In summary, the integrated speaker circuit and the power adjustment circuit of the present invention can filter the interference noise through the signal filtering module, and obtain the signal of the specific frequency band according to different needs of the user, or listen to the human ear. The sense-range feature is designed as a signal filtering module, so that the input speaker's audio signal can be efficiently converted into the adult ear hearing range. The power adjustment circuit is also used to call up the power of the sound output signal. The power adjustment circuit is designed according to the power of the maximum output signal of different devices and the power that the speaker can withstand, and the optimal amplification/attenuation ratio is designed to prevent the power of the input signal from being higher than the power that the speaker can withstand, and the power is kept at the sound. Human hearing can be perceived within the target range. According to this, the performance of the miniature speaker device can be effectively improved and the reliability is high. The above embodiments are merely illustrative of the principles of the present invention and its function, and are not intended to limit the present invention. Anyone who is familiar with the technology can modify and change the above embodiments in the spirit and scope of Z. Therefore, the scope of protection of this creation should be as listed below. [Simplified illustration of the drawing] The first figure is the device architecture diagram of one embodiment of the integrated noise filter circuit and the power adjustment circuit of the miniature speaker device; and the second figure is the micro-Yang shown in the figure The sound device includes a device architecture diagram of another embodiment of the radio wave module; "13 • M338521 3 is a device architecture of another embodiment of the miniature speaker device shown in FIG. 2 including a power switching module Figure 4 and Fig. 4 show the specific implementation circuit diagram of the miniature speaker device integrated in a circuit board. [Main component symbol description] Micro speaker device with integrated filter circuit and power adjustment circuit 11 12 13 14 15 2
22 訊號濾、波模組 功率調整模組 揚聲器模組 射頻濾、波模組 電源切換模組 電路板 運算放大器晶片 排線 揚聲器22 Signal Filter, Wave Module Power Adjustment Module Speaker Module RF Filter, Wave Module Power Switch Module Circuit Board Operational Amplifier Chip Cable Cable Speaker
Rl’R2，R3，R4 電阻Rl'R2, R3, R4 resistance
Cl，C2，C3，C4，C5，C6，C7 電容 Ll，L2 電感 14Cl, C2, C3, C4, C5, C6, C7 Capacitors Ll, L2 Inductors 14