1291628 、九、發明說明： ~ 【發明所屬之技術領域】 本發明係關於一種音量管理系統及方法，尤其係關於一種藉由管 理音量管理系統之音量從而保護聽力之系統及方法。 【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。然而， 在噪音比較大的環境中，會導致用戶很難聽到渴望之音頻訊號，因為 噪音會掩蓋用戶渴望聽到之音頻訊號。 ”BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a volume management system and method, and more particularly to a system and method for protecting hearing by managing the volume of a volume management system. [Prior Art] With the development of digital products, handheld audio playback devices are widely used. However, in a noisy environment, it is difficult for the user to hear the desired audio signal because the noise masks the audio signal that the user desires to hear. ”
為了解決該問題，市場上出現了許多音量控制祕及方法。如美 國專利商標局於2003年7月3日公開之US2〇〇3/〇12368〇號專利申請 文件，其揭露了_種音1:控織統及方法。該音量控齡統包括一揚 聲器、-音量控制單元、-音頻處理單元、—用戶選擇單元、一噪音 感應器、-音量設定表及-微控制器；該音量控制單元用於輸出二 量控制訊號；該音麟理單元麵該音量控舰號關節音量控二 值，並輸出一音量控制值被調節後之聲音訊號到該揚聲器；該用戶選 擇單元選擇-音量自動控制功能；該噪音感應器感應外部噪音；該音 量設定表列出了各噪音值對應之音量控制值；該微控基於該^ 之外部噪音確定-噪音值，從該音量設定表中讀取該被確定之噪音^ 對應之音量控制值，及控繼音量㈣單元以調節該音量控制值。該 音量控制方法包括步驟：存儲-音量設定表，該音量設定表列出了^ 嚷音值對應之音量控制值；感應外部噪音；確定料部噪音之嗓音水 平；及基於該音量設定表’藉由該被確定之噪音值靖該音量控^。 即如果外部噪音增加，則輸出聲音之音量控制值隨之增加。 在鮮比較大之環境中，用戶為了能夠聽到渴望之音頻訊號，就 s增大音s控制值。另外’用戶在收聽快節奏音樂時，也會將音量控 制值調到很大。然而，用戶都存在—個聽力生理極限，即燮度不適^ (L〇udness Discomfort Levd，LDL)，如果用戶的耳朵長時間^露在超過 該響度不適級之ί哀境下，則會對該用戶的聽力造成傷害。 6 1291628 【發明内容】 ’有必錢供-種音量管_統及方法， 計算一預設時 間段内之音頻能量累積值 /汽巧匕里糸冇 是醒用戶調低當 士人I 每處理單元、一咅吾:Hr生- 立is 輪出單元、-触數_鮮及—音， θ里㈣μ、-音頻 該音」 極限值時，Μ輪+ ，頻旎罝累積值達到用戶能夠承受之 輸出-^音，提咖戶調低當前音量控制值。 ，音虿官理系統包括一中央處理單元、一 單元 類比數位轉換器及一音量營踩置_ , 於控制該音量管理季替早70。該中央處理單元用 一 系、种各早作。«量㈣單元紋-當前 該音頻輸出裝置之類比音 :量控制值；該類比數轉換器獲取輸_曰里控制早心又疋一 ^別 $取^數類比音頻訊號轉換為數位音頻訊號，·該音量管理單元 ΡίπΓ立複ϋ糟由該複數振幅值，計算該第一預設時 之9頻Γ里累積值，並當該音頻能量累積值達到-預設值時， 央處理單元發送一命令訊號，使得該中央處理單元響應該命令 訊號從^出-提示音，以提_戶調低當前音量控制值。 該曰量管理方法包括下列步驟：獲取輸出之類比音頻訊號 ，將該 類比音頻訊號轉換為數位音頻訊號；對該數位音頻訊號進行取樣，獲 取二第一預設時間段内之複數振幅值；藉由該複數振幅值，應用一數 學异法计异該第一預設時間段内之音頻能量累積值；及當該音頻能量 累積值達到一預設值時，發送一命令訊號；響應該命令訊號從而輸出 一提示音，以提醒用戶調低當前音量控制值。 相較於現有技術，所述音量管理系統及方法計算該第一預設時間 段内之音頻能量累積值，當該音頻能量累積值達到用戶能夠承受之極 限值時，則輸出一提示音，提醒用戶調低當前音量控制值，從而達到 保護用戶聽力之目的。下面將結合附圖對本發明之實施方式進行說明。 【實施方式】 如第一圖所示係本實施方式中音量管理系統之架構圖。該音量管 理系統包括一中央處理單元10、一存儲單元11、一解碼單元12、一數 位類比轉換器13、一音量控制單元14、一放大器15、一音頻輸出裝置 16、一類比數位轉換器17及一音量管理單元18。該中央處理單元10 1291628 ，控制該音量管理系統十各單元之操作。該存儲單元11存儲有複數音頻 文樓、解碼；f呈式及音量管理程式。該解碼單元賣取一音頻文槽，並 "解碼該音敝生—數位音頻《，並將錄位音頻峨傳^至該 數位類比賴g I3。鶴:鋪比雜器1：3將錄位音親號轉換為類 比音頻訊號，並將該類比音頻訊號傳送至該放大^ 15。該音量控制單 元14設定-當前音量控制值。該放大器15藉由該當前音量控^值將 該類比音舰號放大，並紐域之類比音頻峨傳送職音頻輸出 裝置16。該音雜出裝置輸出該放大後之紙音頻訊號對應之聲 音。該音頻輸出裝置16可為-耳機或一揚聲器。該類比數位轉換器17 獲取輸出至該音頻輸出裝置16之類比音頻被號，並將該類比音頻訊號 轉換為數位音頻訊號。該音量管理單元18對該數位音頻訊號進行ς 樣，獲取-第-預設時間段Tl内之複數振幅值mi;然後藉由該複數振 幅值项，顧-數學算法計算該第—預設_段71内之音頻能量累積 值Q，例如，該數學算法可為：Q = [Σ( mi )2 / N产（其中，淡丄到 N)，Q表示該音頻能量累積值，N表示該第一預設時間段t内獲取該 數位音頻城之振幅值项之數目；當該音頻能量帛積值Q達到一預設 值K時(該預設值K係為用戶耳朵賴承受之音頻能量累積值Q之極 限值），向該中央處理單元10發送一命令訊號，使得該中央處理單元 1〇響應該命令訊號從而輸出一提示音；另外，在一第二預設時間段丁2 内’如果該中央處理單元10未接收到用戶調小該當前音量控制值V之 控制訊號，該音量管理單元18增加該提示音之音量控制值及/或提高該 提示音之輸出頻率。 其中，輸出該提示音具體可為，該中央處理單元10響應該命令訊 號，從而控制該解碼單元12從該存儲單元u讀取一提示音頻資料； 雜碼單7C 12解碼該提示音頻資料產生一數位音頻訊號，然後將該數 位音頻訊號傳送至該數位類比轉換器13;該數位類比轉換器13將該數 位音頻訊號轉換為類比音頻訊號，並將該類比音頻訊號傳送至該放大 器15 ’該放大器15藉由該音量控制單元14設定之當前音量控制值將 麵比音頻訊號放大，並將放大後之類比音頻訊號傳送到該音頻輸出 1291628 該音，，置16輸出該類比音頻訊號對應之提示音，以提 元ίο塑篁控制值。輸出該提示音具體還可為，中央處理單 H 號㈣執行-提示音触式，生成-提示音頻資 Ϊ數元12解贼提示音箭料產生—触音頻職，然後將 至該數位類比轉換1113;該數位類比轉換器u將 二:頻錢轉換為類比音頻訊號’並將該類比音頻訊號傳送至該 值將物5:，A器15藉由該音量控制單元14設定之當前音量控制 歧，並銳域之音親麟送到該音頻 輸出裝置16，該s頻輸出裝置16輸出該類比音頻訊號對應之提示音， 以提醒用戶降低當前音量控制值。 、 ⑽如第二®所示係本實施方式巾音鮮理單元之模關。該音量管 理單7G 18包括-取樣模組20、-計算模組21及一提示模組22。該取 樣模組20用於對該類比數位轉換_ 17轉換之該數位音頻訊號進行取 樣三獲取，第-預設時間段Tl内之複數振幅值取。該計算模組21用 於藉由該複數振祕mi，制上述數學算法計算該p職時間段Τι 内之曰頻能篁累積值Q。該提示模組22用於當該音頻能量累積值q達 到該預設值K時，捕巾央纽單元1()魏_命令喊，使得該中央 處理單元1G響應該命令訊號從而輸出—提示音；另外，在該第二預設 時間段A内，如果該中央處理單元1〇未接收到用戶調小該當前音量控 制值之控制訊號，則該提示模組22增加該提示音之音量控制值及/或提 高該提示音之輸出頻率。 如第二圖所示係傳統上播放音頻文檔之流程圖。當用戶選擇一音 頻文檔進行播放時，該中央處理單元1〇從該存儲單元U中讀取該音 頻文檔(步驟S30)。該解碼單元12在該中央處理單元1〇之控制下解碼 該音頻文檔產生一數位音頻訊號，並將該數位音頻訊號傳送至該數位 類比轉換器13(步驟S31)。該數位類比轉換器13將該數位音頻訊號轉 換為類比音頻訊號，並將該類比音頻訊號傳送至該放大器15(步驟 S32)。該放大器15藉由當前音量控制值將該類比音頻訊號放大，並將 放大後之類比音頻訊號傳送到該音頻輸出裝置16(步驟S33)。該音頻輸 1291628 出裝置16輸出該類比音頻訊號對應之聲音(步驟534)。 如第四圖所示係本實施方式中音量管理方法之流程圖。在該中央 - 處理單元1〇之控制下，該類比數位轉換器17獲取輸出至該音頻輸出 裝置16之類比音頻訊號(步驟S40);然後將該類比音頻訊號轉換為數 位音頻訊號(步驟S41)。該音量管理單元18對該數位音頻訊號進行取 樣’獲取該預設時間段T内之複數振幅值mi(步驟S42);然後藉由該複 數振幅值πν計算該預設時間段T内之音頻能量累積值q(步驟S43); 並判斷該音頻能量累積值Q是否達到該預設值κ(步驟S44);當該音頻 此里累積值Q未達到該預設值K時，流程返回步驟S40 ;而當該音頻 • 能量累積值Q達到該預設值K時，該音量管理單元18向該中央處理 單元10發送一命令訊號(步驟S45)。該中央處理單元1〇響應該命令訊 號從而輸出一提示音(步驟S46)，並開始計時(步驟S47)。該中央處理 單元10偵測在該第二預設時間段I内是否接收到用戶調小該當前音 量控制值之控制訊號(步驟S48)。如果在該第二預設時間段Τ2内，該中 央處理單元10未接收到用戶調小該當前音量控制值之控制訊號，則該 音量管理單元18增加該提示音之音量控制值及/或提高該提示音之輸 出頻率(步驟S49)，然後流程返回步驟S47,中央處理單元1〇重新計時； =果在該第二預設時間段A内，該中央處理單元1〇接收到用戶調小該 當前音量控制值之控制訊號，則該音量管理單元18調小該當前音量控 攀制值(步驟S50)，然後流程返回步驟S4〇，即上述流程循環進行。其中t f輸出該提示音之過財，如果該巾央處理單元1G接收朗戶關閉該 提示音之控制訊號，則該音量管理單元18驅動該中央處理單元ι〇結 束上述^量管理方法之流程。另外，當該中央處理單元10接收到一停 止或暫停播放之控制訊號時，亦結束上述音量管理方法之流程。 綜上所述，本發明所提出之一種音量管理系統及方法確實可符合 件’爰依法提出專利申請。惟’以上所述者僅為本發明二 一種音量官理系統及方法之較佳實施例，舉凡熟悉本案技藝之人士， 在，照本發明精神所作之等效修飾或變化，皆應包含於以下之申浐 利範圍内。 ’哥 1291628 【圖式簡單說明】 第一圖係實施方式中本發明之音量管理系統之架構圖。 第二圖係實施方式中本發明之音量管理單元之模組圖。 第三圖係傳統上播放音頻文檔之流程圖。 第四圖係實施方式中本發明之音量管理方法之流程圖。 【主要元件符號說明】 音量管理系統 1 中央處理單元 10 存儲單元 11 解碼單元 '12 數位類比轉換器 13 音量控制單元 14 放大器 15 音頻輸出裝置 16 類比數位轉換器 17 音量管理單元 18 取樣模組 20 音量獲取模組 21 計算模組 22 • 提示模組 23 11In order to solve this problem, many methods of volume control and secrets have appeared on the market. For example, U.S. Patent Application Serial No. 2/3, 12,368, filed on Jul. 3, 2003, the disclosure of which is incorporated herein by reference. The volume control system includes a speaker, a volume control unit, an audio processing unit, a user selection unit, a noise sensor, a volume setting table, and a microcontroller. The volume control unit is configured to output a binary control signal. The sound unit controls the volume control joint volume control value, and outputs a sound signal whose volume control value is adjusted to the speaker; the user selects a unit selection-volume automatic control function; the noise sensor senses External noise; the volume setting table lists the volume control values corresponding to the respective noise values; the micro-control determines the volume corresponding to the determined noise ^ from the volume setting table based on the external noise determination-noise value of the ^ The control value, and the control volume (4) unit to adjust the volume control value. The volume control method comprises the steps of: a storage-volume setting table, the volume setting table lists a volume control value corresponding to the 嚷 sound value; sensing an external noise; determining an arpeggio level of the material noise; and borrowing based on the volume setting table The volume value is controlled by the determined noise value. That is, if the external noise increases, the volume control value of the output sound increases. In a relatively large environment, the user increases the tone s control value in order to be able to hear the desired audio signal. In addition, when the user listens to fast-paced music, the volume control value is also adjusted to a large value. However, the user has a hearing physiological limit, that is, L〇udness Discomfort Levd (LDL). If the user's ear is exposed for a long time beyond the loudness of the loudness, then the user will The user's hearing causes damage. 6 1291628 [Summary content] 'There is a need for money - a kind of volume tube _ system and method, calculate the accumulated value of audio energy in a preset period of time / 汽 匕 糸冇 糸冇 用户 用户 用户 用户 用户 用户 用户 用户 用户 用户 用户Unit, a scorpion: Hr raw - stand is rounded out unit, - touch number _ fresh and - sound, θ 里 (4) μ, - audio the sound" limit value, Μ wheel +, frequency 旎罝 cumulative value reaches the user can withstand The output - ^ sound, the coffee maker to lower the current volume control value. The audio system includes a central processing unit, a unit analog-to-digital converter, and a volume camping _, which controls the volume management season as early as 70. The central processing unit is used in a series of systems. «Quantity (four) unit pattern - the current analog output of the audio output device: the amount of control value; the analog-to-digital converter obtains the input _ 控制 控制 控制 早 疋 ^ ^ ^ 取 取 取 取 取 取 取 取 analog audio signal converted into digital audio signal, The volume management unit Ρίπ ϋ ϋ 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由 由The command signal is caused to cause the central processing unit to respond to the command signal from the ^-prompt tone to raise the current volume control value. The method for managing the quantity includes the steps of: obtaining an analog audio signal of the output, converting the analog audio signal into a digital audio signal; sampling the digital audio signal to obtain a plurality of amplitude values in the first preset time period; Applying a mathematical difference method to calculate an accumulated audio energy value in the first preset time period; and transmitting a command signal when the accumulated audio energy value reaches a preset value; responding to the command signal Thereby a prompt tone is output to remind the user to lower the current volume control value. Compared with the prior art, the volume management system and method calculate an accumulated audio energy value in the first preset time period, and when the accumulated audio energy value reaches a limit value that the user can withstand, a prompt tone is output, and a reminder is output. The user lowers the current volume control value to protect the user's hearing. Embodiments of the present invention will be described below with reference to the accompanying drawings. [Embodiment] As shown in the first figure, the architecture of the volume management system in the present embodiment is shown. The volume management system includes a central processing unit 10, a storage unit 11, a decoding unit 12, a digital analog converter 13, a volume control unit 14, an amplifier 15, an audio output device 16, and an analog digital converter. And a volume management unit 18. The central processing unit 10 1291628 controls the operations of the ten units of the volume management system. The storage unit 11 stores a plurality of audio buildings, decoding, f presentation and volume management programs. The decoding unit sells an audio channel and "decodes the audio-digital audio" and transmits the recorded audio to the digital analogy. Crane: The paver 1:3 converts the recorded pro-number to an analog audio signal and transmits the analog audio signal to the amplification ^15. The volume control unit 14 sets the current volume control value. The amplifier 15 amplifies the analog sound ship number by the current volume control value, and transmits the analog audio output device 16 by analog audio. The sound mixing device outputs the sound corresponding to the amplified paper audio signal. The audio output device 16 can be an earphone or a speaker. The analog to digital converter 17 obtains an analog audio number output to the audio output device 16, and converts the analog audio signal into a digital audio signal. The volume management unit 18 samples the digital audio signal to obtain a complex amplitude value mi in the -first preset time period T1; and then calculates the first preset_by the complex amplitude value term The audio energy accumulation value Q in the segment 71, for example, the mathematical algorithm may be: Q = [Σ( mi ) 2 / N (where, lightly to N), Q represents the accumulated value of the audio energy, and N represents the first Obtaining the number of amplitude value items of the digital audio city within a preset time period t; when the audio energy hoarding value Q reaches a preset value K (the preset value K is the audio energy accumulation of the user's ear a limit value of the value Q), sending a command signal to the central processing unit 10, so that the central processing unit 1 responsive to the command signal to output a prompt tone; and additionally, in a second preset time period The central processing unit 10 does not receive a control signal for the user to reduce the current volume control value V. The volume management unit 18 increases the volume control value of the prompt tone and/or increases the output frequency of the prompt tone. Specifically, the outputting the prompt sound may be: the central processing unit 10 responds to the command signal, thereby controlling the decoding unit 12 to read a prompt audio material from the storage unit u; the code list 7C 12 decodes the prompt audio data to generate a a digital audio signal, and then transmitting the digital audio signal to the digital analog converter 13; the digital analog converter 13 converts the digital audio signal into an analog audio signal, and transmits the analog audio signal to the amplifier 15' 15, by the current volume control value set by the volume control unit 14, the surface is amplified by the audio signal, and the amplified analog audio signal is transmitted to the audio output 1291628, and the 16 outputs the corresponding tone of the analog audio signal. To control the value of the ί ίο plastic. The output of the prompt tone may also be, the central processing single H number (four) execution-prompt tone touch, generate-prompt audio resource number 12 to solve the thief prompt tone material generation - touch audio position, and then to the digital analog conversion 1113; the digital analog converter u converts two: frequency money into an analog audio signal 'and transmits the analog audio signal to the value 5:, the current volume control set by the A device 15 by the volume control unit 14 And the sound of the sharp field is sent to the audio output device 16, and the s frequency output device 16 outputs a prompt sound corresponding to the analog audio signal to remind the user to lower the current volume control value. (10) As shown in the second®, it is the mold of the fresh sound unit of the present embodiment. The volume management unit 7G 18 includes a sampling module 20, a computing module 21, and a prompting module 22. The sampling module 20 is configured to perform the sampling three acquisition on the digital audio signal converted by the analog-to-digital conversion _17, and the complex amplitude value in the first preset time period T1 is taken. The calculation module 21 is configured to calculate the chirp energy 篁 cumulative value Q in the p job time period 藉 by the complex vibration mi. The prompt module 22 is configured to: when the audio energy accumulation value q reaches the preset value K, the catching unit 1 () Wei_ command shouts, so that the central processing unit 1G responds to the command signal to output a prompt tone In addition, in the second preset time period A, if the central processing unit 1 does not receive the control signal that the user reduces the current volume control value, the prompt module 22 increases the volume control value of the prompt tone. And/or increase the output frequency of the tone. As shown in the second figure, a flow chart of conventionally playing an audio document is shown. When the user selects an audio file for playback, the central processing unit 1 reads the audio document from the storage unit U (step S30). The decoding unit 12 decodes the audio file under the control of the central processing unit 1 to generate a digital audio signal, and transmits the digital audio signal to the digital analog converter 13 (step S31). The digital analog converter 13 converts the digital audio signal into an analog audio signal, and transmits the analog audio signal to the amplifier 15 (step S32). The amplifier 15 amplifies the analog audio signal by the current volume control value, and transmits the amplified analog audio signal to the audio output device 16 (step S33). The audio input 1291628 out device 16 outputs the sound corresponding to the analog audio signal (step 534). As shown in the fourth figure, it is a flowchart of the volume management method in the present embodiment. Under the control of the central processing unit 1 , the analog digital converter 17 obtains an analog audio signal outputted to the audio output device 16 (step S40); and then converts the analog audio signal into a digital audio signal (step S41). . The volume management unit 18 samples the digital audio signal to obtain a complex amplitude value mi within the preset time period T (step S42); and then calculates the audio energy in the preset time period T by the complex amplitude value πν Cumulating value q (step S43); and determining whether the audio energy accumulation value Q reaches the preset value κ (step S44); when the audio accumulated value Q does not reach the preset value K, the flow returns to step S40; When the audio/energy accumulation value Q reaches the preset value K, the volume management unit 18 transmits a command signal to the central processing unit 10 (step S45). The central processing unit 1 outputs a prompt tone in response to the command signal (step S46), and starts timing (step S47). The central processing unit 10 detects whether a control signal for the user to reduce the current volume control value is received in the second preset time period I (step S48). If the central processing unit 10 does not receive the control signal for the user to reduce the current volume control value within the second preset time period Τ2, the volume management unit 18 increases the volume control value of the prompt tone and/or increases The output frequency of the prompt tone (step S49), then the flow returns to step S47, the central processing unit 1 〇 re-times; = in the second preset time period A, the central processing unit 1 〇 receives the user to reduce the size The volume control unit 18 adjusts the current volume control value (step S50), and then the flow returns to step S4, that is, the above process loops. The t f outputs the prompt sound. If the towel processing unit 1G receives the control signal for the Lang household to turn off the prompt sound, the volume management unit 18 drives the central processing unit to complete the flow of the above-mentioned management method. In addition, when the central processing unit 10 receives a control signal for stopping or pausing playback, the flow of the above volume management method is also ended. In summary, the volume management system and method proposed by the present invention can indeed be submitted in accordance with the law. However, the above description is only a preferred embodiment of the second volume control system and method of the present invention. Those skilled in the art will be able to include equivalent modifications or variations in the spirit of the present invention. The following claims are within the scope of the application.哥哥 1291628 [Simple description of the drawings] The first figure is an architectural diagram of the volume management system of the present invention in the embodiment. The second figure is a block diagram of the volume management unit of the present invention in the embodiment. The third figure is a flow chart of conventionally playing an audio document. The fourth figure is a flow chart of the volume management method of the present invention in the embodiment. [Main component symbol description] Volume management system 1 Central processing unit 10 Storage unit 11 Decoding unit '12 Digital analog converter 13 Volume control unit 14 Amplifier 15 Audio output device 16 Analog digital converter 17 Volume management unit 18 Sampling module 20 Volume Acquisition module 21 calculation module 22 • prompt module 23 11