1305321 九、發明說明： 【發明所屬之技術領域】 本發明係觀-種賴聽力的纽、方法及聲音輸蚊置 係關於-種通過限制聲音能量值從而保護聽力的系統 : 力保護功能的聲音輪出裝置。 具有^ 【先前技術】 隨著數位產品的發展，手持音頻播放設備得到廣泛應用，呈 頻播放功能的手持設備包括收音機、Mp3 ' pDA、手機等。 1 f音樂或廣播節目時不影響別人，用戶通常使用耳機收聽。在欣= > 樂的過程中，用戶時常需要進行下列操作：播放、停止播放、上一首曰、 下-首及調節音量，然而，用戶直接在音頻重放設備上進行操作 方便’線控耳機解決了上述問題。 當欣賞快節奏音樂例如搖滚音樂時，用戶往往將音量調到很大； 另:卜。’當城音量很大時，例如地鐵巾，用戶為了關聽到渴望的聲 音訊號也會將音量調職大。然而，用戶都存在—個聽力生理極限， 即響度不適級(Loudness Discomfort Level, LDL)，如果用戶的耳朵長時 間暴露在超過該響度不適級的環境下，貞，丨會對該用戶的聽力=成傷 害。目前市場上的線控耳機尚不具備聽力保護的功能。 丨 【發明内容】 有鑑於此，有必要提供一種聽力保護系統，當一段時間内的音頻 能量值達到預定值，控制音量的變化，從而保護聽力。該聽力保護系 統包括類比數位轉換器及一音量管理單元。該類比數位轉換器，將 接收的類比聲音訊號轉換為數位聲音訊號。該音量管理單元包括：一 取樣模組，採用一預定的取樣頻率對該數位聲音訊號進行取樣，獲取 複數振幅值；—計算模組，將該複數振幅值作為一參數計算一預設時 的聲音能量值；及一聽力保護模組，當該聲音能量值達到一預 設能置值時，產生一聽力保護訊號。其中，該聽力保護系統還包括一 音量，制單元’接收並響應該聽力保護訊號，自動調低當前增益值。 該音量控制單元可替換為-警示單元，接收麟應_力保護訊號， 6 .1305321 產生視覺或聽覺的警示訊號。 有鑑於此，«必要提供提供了—種具有聽力 出裝置，當-段時間_音頻能量值達咖定值，控制音量H曰匕輸 從而保雜力。該聲音輸出裝置包括—介面單元一類 -音量管理單元及-聲音傳感器。該介面單丄轉f器 出的瞒織。.咖姻:^1305321 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a method, a method, and a sound transmission system for protecting a hearing by limiting the sound energy value: a sound of a force protection function Pull out the device. With ^ [Prior Art] With the development of digital products, handheld audio playback devices are widely used, and handheld devices with frequency playback capabilities include radios, Mp3 'pDA, mobile phones, and the like. 1 f music or radio programs do not affect others, users usually use headphones to listen. In the process of 欣 = > music, users often need to do the following operations: play, stop playback, previous 曰, lower-first and adjust the volume, however, the user can directly operate on the audio playback device. The headset solves the above problem. When enjoying fast-paced music such as rock music, the user tends to adjust the volume to a large volume; When the city is very loud, such as a subway towel, the user will turn the volume up in order to hear the desired voice signal. However, the user has a hearing physiological limit, that is, Loudness Discomfort Level (LDL). If the user's ear is exposed to an environment that exceeds the loudness of the loudness for a long time, he/she will listen to the user. Into damage. The wire-controlled headphones currently on the market do not yet have the function of hearing protection.丨 [Summary of the Invention] In view of the above, it is necessary to provide a hearing protection system that protects hearing by controlling the change in volume when the audio energy value reaches a predetermined value for a period of time. The hearing protection system includes an analog digital converter and a volume management unit. The analog-to-digital converter converts the received analog audio signal into a digital sound signal. The volume management unit includes: a sampling module that samples the digital sound signal by using a predetermined sampling frequency to obtain a complex amplitude value; - a calculation module, and calculates the sound of the preset amplitude by using the complex amplitude value as a parameter The energy value; and a hearing protection module, when the sound energy value reaches a preset value, a hearing protection signal is generated. Wherein, the hearing protection system further includes a volume, and the unit 'receives and responds to the hearing protection signal to automatically lower the current gain value. The volume control unit can be replaced with a - warning unit to receive the lining protection signal, and 6.1305321 to generate a visual or audible warning signal. In view of this, «need to provide a kind of hearing device, when the time- _ audio energy value reaches a coffee value, control the volume H 曰匕 to maintain the hybrid. The sound output device comprises a type of interface unit - a volume management unit and a sound sensor. The interface is twisted and twisted. .Care: ^
該類比數位轉齡，將該介醇元触_比聲音喊雜為數位聲 音訊Ί音量管理單元包括-取#模組’ _—預定的取樣頻率對 該數位聲音減進行轉’獲取複數振祕；—計顧組，將該複數 振幅值作為-錄計算-預設_段_聲音能量值；及—聽 模組，當該聲音能量值預設能量值時，產生—聽力保護訊號°。 其中’該聲音輸出裝置還包括一音量控制單元，接收並_該聽力保 護訊號’自動雛當前增錄，並根翻健_益佩大通過該介 面單元接㈣·聲音峨。該音量控解元可替換為—警示單元， 接收並響應該聽力保護訊號，產生視覺或聽覺的警示訊號。 有鑑於此，還有必要提供一種聽力保護方法，當一段時間内的音 頻能量值達到預定值，控制音量的變化，從而保護聽力。該聽力保護 方，包括下列步驟：接收一聲音訊號源輸出的類比聲音訊號；將該類 比聲音訊號轉換絲位聲音訊號；獅__預定的取樣鮮對該數位聲 音訊號進行取樣，獲取複數振幅值；將該複數振幅值作為一參數計算 一預設時間段内的聲音能量值；及當該聲音能量值達到—預設能量值 時，產生一聽力保護訊號。其中，該聽力保護方法還包括步驟：接收 並響應該聽力保護訊號，自動調低當前增益值。上述調低增益值的步 驟可替換為下一步驟：接收並響應該聽力保護訊號，產生視覺或聽覺 的警示訊號。 相較於現有技術，應用該聽力保護的系統、方法及具有聽力保護 的聲音輸出裝置，計算一預設時間段内之音頻能量值，當該音頻 能量值達到一預設的音頻能量值時，則自動調低音量或產生視覺或聽 覺的警示訊號，從而達到保護用戶聽力的目的。下面將結合附圖對本 7 1305321 發明的實施方式進行說明。 【實施方式】 的牟槿R ㈣的實財式巾具有聽力保護魏的聲音輸出裝置 嶋圖。該聲音輸出裝置10 聲音娜调音輸出裝置1〇通過該介面單元U接收-聲日訊號源11輸出的類比聲音訊號 = 力保護系統13 ’·其中，該整立㈣％ ”，聲㈢訊虎發送到該聽 播放裝置、電懸敎可為音縣贼置、無線訊號 缺 或麥克風等。該聽力保護系統13計算該類比磬立却 «:頻值’當該音頻能量值達到—預設能量_自_低立i ίίΐΓ紐覺的警示峨，哺_戶聽力免受傷害。 :ϋ 14在概後的音量下輸丨鋪比聲音訊麟應的聲音。其 中，該聲音傳感器μ可為一耳機或一揚聲器。關聲曰其 是本發明的第_實施方式中具有聽力保護功能的聲音輸出 ，置，方塊圖。該聽力保護系統13包括一類比數位轉換器15、一處理 2立#^音量控制單元18;該處理單元包括—音量管理單元16。 ΐ 通過該介面單元12接收該聲音訊號源輸出的類 聲：訊號’並將該類比聲音訊號分別輸送到該類比數位轉換器15及 該音，控鮮it 18。簡·_削15職介面單元12接收 類比聲音訊號轉換為數位聲音訊號。該音量管理單元K，採用定 的取ί鮮f對絲鱗音訊舰行取樣，麻減振 mi ;獲得 該^量控鮮元1S的當前增益值v ;織根獅練值^及該 當前，益值v，顧-數學算法週期性地計算__預設時間段τ内的音 頻能量值Q ;當該音頻能量值q翻__讎能量值κ時，向該音量控 制單元18發送-聽力保護訊號；其中，該預設能量值κ可由用二手^ 設定，或由設計人員預先設定；例如，該預設能量值£可為用戶耳朵 能夠承受的最大音舰4值Q。另外，計算該音雜量值的數學算法 可為：Q = {[E(mi*V)2/N]i/2}*T(其中，⑻到外奸示該音頻 能量值，T表示該預設時間段，N表示該預設時間段τ内獲取該數位 聲音訊號的振幅值mi的數目，V表示當前增益值。該音量控制單^ 18， 1305321 響應該聽力保護訊號從而調低增益值，並根據調低後的增益值放大通 過該介面單元12輪送的類比聲音訊號；其中，調低增益值的方法可為 一次性大幅度地調低到一適當的增益值，也可小幅度地逐步調整。; 聲音傳感器14輸出該類比聲音訊號對應的聲音β 為了補償不同用戶聽覺靈敏度的差異，本實施方式也可允許用戶 手動調整或選擇該預設能量值K。例如’如果用戶的聽覺靈敏度較低， 便可以將該預設能量值K調高些；ffij如果用戶的聽覺錄度較高，便 可以將該職能量值K調低些。另外，為了適細戶在不同時間段内 聽覺靈敏度的變化，本實施方式也可根據#前_所屬的時間段 調整或設定觸設能量值K。例如，早上好的聽覺錄度較高，可 以將該預設能量值K自動調低；种午用戶覺錄度較低 以將該預織量值K自動調高。該時間段的設置可由設計人員預先抓 定’也可由用戶設定。由此，該處理單S17還提供—時鐘單元19，ς 音量管理單元π從猶鐘單元D觀讀時較鱗 ^ 時間段’然後根據當前時間所屬的時間段調整該預設能量值κ 可滅需要啟滅關上述自_整或選擇該職能量值κ 調整該預設能量似的料具料為，該音量管料元w 預設時間段的織能量值K作騎準，例如，設定料u = 間!!預設能量值κ為90分貝等。在比較聲音能量值與預設能量值κ 以刖，首先確定當前時間所屬的時間段、 二 間段的差值調整預設能量值Κ。 了 ^又一推-又時 設定該預魏錄Κ財法聽Μ，The analogy turns to the age, and the mediator touches the sound to the digital sound. The volume management unit includes -takes the 'module' _-the predetermined sampling frequency is reduced by the digital sound to obtain the complex vibration. ; - the evaluation group, the complex amplitude value as a - record calculation - preset _ segment _ sound energy value; and - listening module, when the sound energy value preset energy value, generate - hearing protection signal °. Wherein the sound output device further comprises a volume control unit for receiving and _ the hearing protection signal automatically to be newly recorded, and the root _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The volume control unit can be replaced by a warning unit that receives and responds to the hearing protection signal to generate a visual or audible warning signal. In view of this, it is also necessary to provide a hearing protection method that protects the hearing by controlling the volume change when the value of the audio energy reaches a predetermined value for a period of time. The hearing protection device comprises the steps of: receiving an analog sound signal outputted by an audio signal source; converting the analog sound signal into a silk sound signal; and sampling the digital sound signal by the lion__ predetermined sample to obtain a complex amplitude value And calculating the sound energy value in a preset time period as the parameter; and generating a hearing protection signal when the sound energy value reaches the preset energy value. The hearing protection method further includes the steps of: receiving and responding to the hearing protection signal, and automatically lowering the current gain value. The step of lowering the gain value described above can be replaced with the next step of receiving and responding to the hearing protection signal to produce a visual or audible warning signal. Compared with the prior art, the system and method for hearing protection and the sound output device with hearing protection are used to calculate the audio energy value in a preset time period, when the audio energy value reaches a preset audio energy value, It automatically adjusts the low volume or produces a visual or audible warning signal to protect the user's hearing. Embodiments of the present invention will be described below with reference to the accompanying drawings. [Embodiment] The 财R (four) real money type towel has a sound output device for hearing protection Wei. The sound output device 10 receives the analog sound signal output from the sound source signal 11 through the interface unit U = the force protection system 13 '· wherein, the tidy (four)%", the sound (three) Sended to the listening device, the electric suspension can be a thief set, a wireless signal missing or a microphone, etc. The hearing protection system 13 calculates the analogy but the «:frequency value" when the audio energy value reaches - the preset energy _ _ low 立 ΐΓ ΐΓ ΐΓ ΐΓ ΐΓ ΐΓ 哺 哺 哺 哺 哺 哺 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户 户A headphone or a speaker. The sound is a sound output having a hearing protection function in the first embodiment of the present invention. The hearing protection system 13 includes an analog digital converter 15 and a processing unit. a volume control unit 18; the processing unit includes a volume management unit 16. ΐ receiving, by the interface unit 12, a sound of the sound source output: a signal 'and transmitting the analog sound signal to the analog digital converter 15 and the , control fresh it 18. The Jane _ 15 interface interface unit 12 receives the analog audio signal into a digital audio signal. The volume management unit K, using the fixed ί fresh f to sample the silk scale audio ship, hemp mi Obtaining the current gain value v of the quantity control fresh element 1S; the root lion training value ^ and the current, benefit value v, Gu-mathematical algorithm periodically calculating the audio energy value Q in the preset time period τ When the audio energy value q is __雠 energy value κ, the hearing protection signal is sent to the volume control unit 18; wherein the preset energy value κ can be set by using the second-hand, or preset by the designer; for example The preset energy value £ can be the maximum sound ship 4 value Q that the user's ear can bear. In addition, the mathematical algorithm for calculating the sound noise value can be: Q = {[E(mi*V)2/N]i /2}*T (wherein (8) indicates the audio energy value to the outside, T indicates the preset time period, and N indicates the number of amplitude values mi of the digital sound signal obtained in the preset time period τ, and V indicates the current Gain value. The volume control unit ^ 18, 1305321 responds to the hearing protection signal to lower the gain value, and according to the reduced value The gain value amplifies the analog sound signal that is transmitted through the interface unit 12; wherein the method of lowering the gain value can be greatly reduced to an appropriate gain value at a time, or can be gradually adjusted step by step; 14 outputting the sound β corresponding to the analog sound signal. In order to compensate for the difference in hearing sensitivity of different users, the embodiment may also allow the user to manually adjust or select the preset energy value K. For example, if the user's hearing sensitivity is low, the user can The preset energy value K is adjusted higher; if the user's auditory recording is higher, the function magnitude K can be lowered. In addition, in order to adjust the auditory sensitivity of the user in different time periods, the implementation The mode can also adjust or set the touch energy value K according to the time period to which the #前_ belongs. For example, if the good hearing in the morning is high, the preset energy value K can be automatically turned down; the noon user degree is low to automatically increase the pre-weaving value K. The setting of this time period can be pre-fetched by the designer' or can be set by the user. Therefore, the processing unit S17 further provides a clock unit 19, wherein the volume management unit π reads from the clock unit D to compare the time period, and then adjusts the preset energy value κ according to the time period to which the current time belongs. It is necessary to start and close the above-mentioned self-contained or select the function magnitude κ to adjust the preset energy-like material, and the volume tube element w has a weaving energy value K for a preset period of time, for example, a setting material u = between!! The preset energy value κ is 90 dB and so on. After comparing the sound energy value with the preset energy value κ, first determine the time period to which the current time belongs, and the difference between the two segments to adjust the preset energy value Κ. ^又推推-再时 Set the pre-Wei Κ Κ Κ Μ Μ,
數時間段繊職瞧K，U 能量值κ。 親選擇辦對應的預設 第三圖是树_帛-實財以 量管理單元16包括-取樣模組20 一丄：兀的杈組圖。該音 22及-聽力保護模組23。該取樣模組j又付板組21、一計算模組 對該類比數位轉換器15輸送的數位签/、用上述預定的取樣頻率£， 欺位聲音訊號進行取樣，獲取一預設時 9 1305321 間段τ内的複數振幅值mi。一增益獲得模組η，獲得該音量控制單元 18的田前增皿值ν。該計算模組22，根據該複數振幅值—及該當前 增‘值V應用上述數學算法計算該預設時間段了觸聲音能量值〇。 該L力保護模纟且23 ’當該聲音能量值Q達到一預設能量值Κ時，產生 一聽力，π«該聽力紐城發送職音量控制單元18。 該曰^理單元16還包括一基準調整模組24，該基準調整模組 24獲取田刚時間並確定該時間所屬的時間段。該聽力保護模組Μ根據 當前時間賴的時間段調整或選擇該預設能量值K。 第四圖疋本，_第—實施方式巾聽力保護方法的流糊。該介 面單元I2從該聲音訊號源、1:1接收一類比聲音訊號，並將該類比聲音 訊號分別輸送到該類比數位轉換器15及該音量控制單元18(步驟 s3〇)。該賴比触娜器ls將鋪比聲音城觀紐鱗音訊號 (广驟S3：〇，該3 i管理單元，採用上述預定的取樣頻率f對該數位 聲音訊號蹄摊，餘魏振雛^(倾S32);獲得該音量斤制單 元18的當前增益值V(步驟S33);然後根據賊數振幅值w及^當前 增益值V’顧上述數學算法計算該舰時間段τ内的音頻能量值For a period of time, the 瞧K, U energy value κ. Pro-selection of the corresponding preset The third picture is a tree _ 帛 - real money management unit 16 includes - sampling module 20 丄: 杈 杈 group diagram. The tone 22 and the hearing protection module 23. The sampling module j is further provided by the board group 21, a computing module, and the digital signature transmitted by the analog-to-digital converter 15 is sampled by using the predetermined sampling frequency, the spoofing sound signal, to obtain a preset time of 9 1305321. The complex amplitude value mi in the interval τ. A gain obtaining module η obtains the field value ν of the volume control unit 18. The calculating module 22 calculates the touched sound energy value 该 according to the complex amplitude value and the current increasing value V by applying the above mathematical algorithm. The L-force protects the die and 23' when the sound energy value Q reaches a predetermined energy value ,, producing a hearing, π «the hearing Newtown sends the volume control unit 18. The processing unit 16 further includes a reference adjustment module 24 that acquires the field time and determines the time period to which the time belongs. The hearing protection module adjusts or selects the preset energy value K according to a time period of the current time. The fourth figure transcript, _ the first embodiment of the towel hearing protection method. The interface unit I2 receives an analog sound signal from the audio signal source, 1:1, and supplies the analog audio signal to the analog digital converter 15 and the volume control unit 18 (step s3). The Laibi toucher ls will be paved than the sound city view of the new scale sound signal (Guang S3: 〇, the 3 i management unit, using the above predetermined sampling frequency f for the digital sound signal hoof, Yu Wei Zhenchu ^ (dip S32) obtaining the current gain value V of the volume compensation unit 18 (step S33); then calculating the audio energy value in the ship time period τ according to the above mathematical algorithm according to the thief number amplitude value w and the current current value V'
Q(步驟S34);湖_音雜量值Q «達賴職能量值κ(步驟 S35);當該音雜量值q未_麵設能量值κ時，輕返回步驟 S31 ;而當該音頻能量值q達到該預設能量值κ時，該音量管理單元 16生成一聽力保護訊號(步驟S36)。該音量控制單元18接收並響應= 聽力保護訊號，自動調低增益值，並根據調低後的增益值放大通^談 介面單元I2輸送的類比聲音訊號(步驟S37)。該聲音傳感器^ ^ 類比聲音訊號對應的聲音(步驟S38)。 則以 第五圖是本發明的第一實施方式中確定預設能量值κ的流程 執行步驟S34以後，該處理單元17確定是否啟動了根據時間預 設能量值Κ的功能(步驟S40)。如果沒有啟動根據時間段調整預机&量 值K的功能，流程轉到步驟S35 ;如果啟動了根據時間段調整=== 量值K的功能，該音量管理單元16從該時鐘單元19獲 & . κ» 又'^备月!J時間並 確疋該時間所屬的時間段(步驟S41)。然後根據當前時間所屬的時間 Ι3Ό5321 段，調整該預設能量值Κ，接著執行上述步驟S35。 如第六圖所示，為本發明第二實施方式中具有聽力保護功能的聲 音輸出裝置的模組圖，第二實施方式與第二圖所示的第一實施方式不 同在於’該音量控制單元18替換為一警示單元60，該介面單元12將 接收到的類比聲音訊號，分別輸送到該類比數位轉換器15及該聲音傳 感器Μ。該警示單元60接收並響應該聽力保護訊號，發出視覺或聽覺 的警不訊號，用以提醒用戶手動調低音量。該警示單元6〇可為一發光 一極體（LED，light-emittingdiode)、一液晶顯示器（LCD，liquid-crystal display )、一螢幕顯示單元（〇sD，on_screen出叩㈣）及其他能夠發出Q (step S34); lake_sound quantity value Q «Da Lai function quantity value κ (step S35); when the sound quantity value q is not set to the energy value κ, lightly returns to step S31; and when the audio When the energy value q reaches the preset energy value κ, the volume management unit 16 generates a hearing protection signal (step S36). The volume control unit 18 receives and responds to the = hearing protection signal, automatically lowers the gain value, and amplifies the analog sound signal transmitted by the interface unit I2 according to the adjusted gain value (step S37). The sound sensor is analogous to the sound corresponding to the sound signal (step S38). Then, the fifth figure is a flow for determining the preset energy value κ in the first embodiment of the present invention. After the step S34 is executed, the processing unit 17 determines whether or not the function of setting the energy value 根据 according to the time is started (step S40). If the function of adjusting the pre-machine & magnitude K according to the time period is not activated, the flow proceeds to step S35; if the function of adjusting the value === the value K according to the time period is activated, the volume management unit 16 obtains from the clock unit 19 & . κ» And '^备月! J time and confirm the time period to which the time belongs (step S41). Then, according to the time Ι3Ό5321 segment to which the current time belongs, the preset energy value 调整 is adjusted, and then the above step S35 is performed. As shown in the sixth figure, a block diagram of a sound output device having a hearing protection function according to a second embodiment of the present invention, the second embodiment is different from the first embodiment shown in the second figure in that the volume control unit 18 is replaced by a warning unit 60, and the interface unit 12 supplies the received analog audio signals to the analog digital converter 15 and the sound sensor respectively. The alert unit 60 receives and responds to the hearing protection signal, and sends a visual or audible alarm signal to remind the user to manually adjust the low volume. The warning unit 6 can be a light-emitting diode (LED), a liquid crystal display (LCD), a screen display unit (〇sD, on_screen (4)), and the like
視覺警不訊號的裝置；該警示單元60還可為—聽覺警轉置如蜂鳴 器’用以發出聽覺警示訊號。The device for visually alerting the signal; the alert unit 60 can also be an audible alarm transponder such as a buzzer for emitting an audible alert signal.
，立另外，第二實施方式與第二圖所示的第一實施方式不同還在於， 該音ΐ官理單元16，採用-預定的取樣頻率丨對該數位聲音訊號進行 取樣，獲取複數減值mi ;織减練她幅值^，細-鮮算 法週期性地計算-職_段τ⑽音雜量值Q 元财賴音頻能量值Q達到—預設能量值κ時，其向該^單: if t聽力麵鶴。婦轉元60概並響賴聽力倾訊號， ^出視見或聽覺的警祕號。其巾，計算該音雜量值的數學算法可 τ Γ-==Ν]1/2}*Τ(射讀1叫Q表補音頻能量值， 的N表示該預設時間段τ内獲取該數位聲音訊號 【圖式簡單說明】 =-明的具有聽力保護功能的音頻輸 弟二圖疋第-實施梅本侧蝴力保她=圖輸出 11 1305321 裝置的模組圖。 第三圖是第一實施方式中本發明的音量管理單元的模組圖。 第四圖是第一實施方式中本發明的聽力保護方法的流程圖。 第五圖是第一實施方式中確定預設能量值的流程圖。 第六圖是第二實施方式中本發明的具有聽力保護功能的音頻輸出 裝置的模組圖。 【主要元件符號說明】In addition, the second embodiment is different from the first embodiment shown in the second figure in that the audio system unit 16 samples the digital sound signal with a predetermined sampling frequency to obtain a complex impairment value. Mi; weaving her amplitude ^, fine-fresh algorithm periodically calculates - occupation _ segment τ (10) tone noise value Q Yuan Cai Lai audio energy value Q reaches - preset energy value κ, when it is to the ^: If t hearing face crane. The woman's transfer to the Yuan 60 is also due to the hearing of the hearing number, ^ seeing or hearing the police number. The towel, the mathematical algorithm for calculating the value of the sound and noise can be τ Γ-==Ν]1/2}*Τ (shot 1 is called the Q table complement audio energy value, and N for the preset time period τ is obtained. Digital audio signal [simple description of the picture] =- Ming's audio transmission with hearing protection function 2nd map - implementation of the Meben side of the butterfly to protect her = figure output 11 1305321 device module diagram. The third picture is the first The block diagram of the volume management unit of the present invention in the embodiment. The fourth figure is a flowchart of the hearing protection method of the present invention in the first embodiment. The fifth figure is a flowchart for determining the preset energy value in the first embodiment. Fig. 6 is a block diagram of the audio output device with hearing protection function of the present invention in the second embodiment. [Description of main component symbols]
聲音輸出裝置 10 聲音訊號源 11 介面單元 12 聽力保護系統 13 聲音傳感器 14 類比數位轉換器 15 音量管理單元 16 處理單元 17 音量控制單元 18 時鐘單元 19 取樣模組 20 增益獲得模組 21 計算模組 22 聽力保護模組 23 基準調整模組 24 itfr 口 〇 — 警不早7G 60 12Sound output device 10 Sound signal source 11 Interface unit 12 Hearing protection system 13 Sound sensor 14 Analog digital converter 15 Volume management unit 16 Processing unit 17 Volume control unit 18 Clock unit 19 Sampling module 20 Gain acquisition module 21 Calculation module 22 Hearing protection module 23 benchmark adjustment module 24 itfr mouth - police not early 7G 60 12