1322408 _ · #/1月丨^曰修正替換頁 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種可降低資料量之音頻系 統及其方法，特別是指一種使用PCM編碼技術對人 聲進行取樣及編碼後再與樂器數位介面（MIDI)樂器 所產生之樂器數位介面資料組合以降低資料量之 可降低資料量之音頻系統及其方法。 ' 【先前技術】 按’習知之音頻系統’例如CD係用以儲存數 位音頻資料。其具有面品質之特性，但亦需要使用 大量之資料。另一個例子是樂器數位介面⑶此化“ Instrument Digital Interface,簡稱 MIDI)槽 案’因為只記錄樂器執行之資料，因此具有一非常 小之資料量。在用以生產音樂CD習知技術中，举 器之音軌首先被記錄，接著才是記錄聲音之 最後再將兩種音源加以組合以形成一首歌曲。 製-音樂CD時’為了完成^夠好之聲音，= 使用44KHz之取樣頻率及16位 貝而 然而，較高之取樣頻率及資料解析度表示Ϊ =生 需之資料量可以下列公式（1)加以 且所 N=Tx44000xl6 位元 * 其：τ代表-首歌之記錄 公 樂⑶中只能記錄數量有限之歌曲，且這此 波資料的歌曲，亦不適合於網際網路上 在過去，一些研究顯示，$ ^輸。 波資料中取出例如長度、迷度及音w;: 5 1322408 Ιΰ^Τΐί n\ f =而著將=數複轉雜換Ζ器數位介面資料格 或樂器與聲音如對於具有多重樂器 。。‘w是r常ί難的其以 卜其樂以介用面^ ;數位介面資料亦可代表二桃事c學上樂 的記錄，：取忒音資料’係 聲音資料而言，11K ^:而ΙΙΜζ，因為對 因此，將樂器之举取f頻率已經足夠好了。 11 KHz取樣頻率之聲°立^ ϋ音執資料與只使用 資料量及高品質、合’即可得到具有低 曲。 有刮於網際網路傳輸之音樂歌 【發明内容】 本發明之主要目 之音頻系統，其將樂考^係^供一種可降低資料量 只使用ΙΙΚΗζ取樣^介面音執資料與 具有低資料量及高^曰貧料結合，即可得到 音樂歌曲。 〇〇貝，亦可經由網際網路傳輸之 =法’其中音樂資目料的直員資料之記 取代，而聲音資料 以其樂數位介面資料1322408 _ · #/1月丨丨 Correction replacement page IX, invention description: [Technical field of the invention] The present invention relates to an audio system and method for reducing the amount of data, in particular to a PCM coding technique An audio system and method for reducing the amount of data by combining vocal sampling and encoding with instrument digital interface data generated by a musical instrument digital interface (MIDI) instrument. [Prior Art] A conventional audio system such as a CD is used to store digital audio material. It has the characteristics of surface quality, but it also requires a lot of information. Another example is the instrument digital interface (3) This "Instrument Digital Interface (MIDI) slot case" because it only records the data performed by the instrument, so it has a very small amount of data. In the technology used to produce music CD, The track of the device is first recorded, and then the two sound sources are combined to form a song. The system-music CD is used to complete the sound of the sound, = use the sampling frequency of 44KHz and 16 However, the higher sampling frequency and data resolution indicate that the amount of data required for production can be obtained by the following formula (1) and N=Tx44000xl6 bits*: τ represents the record of the song in the public music (3) Only a limited number of songs can be recorded, and the songs of this wave of data are not suitable for the Internet in the past. Some studies have shown that $^ loses. Wave data is taken out such as length, fascination and sound w;: 5 1322408 Ιΰ ^Τΐί n\ f = and will be converted to a number of complex media, or instrument and sound, as for a multi-instrument. 'w is r often difficult to use it to use the surface ^ Digital interface The data can also represent the record of the two peaches, and the sound of the music is “11K ^: and ΙΙΜζ, because for this reason, it is good enough to take the f frequency of the instrument. 11 KHz The sound of the sampling frequency can be obtained by using the data and the high quality and the combination of the data and the high quality. The music is recorded on the Internet. [Invention] The main audio of the present invention The system, which will be used to reduce the amount of data, only use the sampling, interface audio, and the combination of low data volume and high quality, can get music songs. Internet transmission = method 'in which the music material is replaced by the record of the member data, and the voice data is based on the music interface information.
技術係以ΙΙΚΗζ之取棘技術進行編碼，且該PCM 進行編妈，可大幅減少'^率&及5位元之資料解析度 ，、貝料量。 供"月丨y曰修正替換頁 頻系：本！明之可降低資料量之音 網際網路以下載曲一網路模組，▼連接至- 至該網ii組及Kg區；-中央處理器，耦接 樂器數位介面及㊁從該歌曲中取出-中，並可從該樂ϋϋΐ 士存該程式/資料區 器數位介面資料並儲/面：聲波檔案中取出一樂 ί位二以;料 =類::=第 步處理該樂器數位介面5匕怠中央處理器可同 後之該樂器數位介面資料'为二皮資料，且處理 第一數位至類比轉換芎轉；二料分別經由該 後，經由該混合器混合後^轉出換成一類比聲音信號 料量is述=下m降低音頻系統資 之樂器數位介面—聲波 ;之樂器數位介該|:數：介面資料成-序 :第吉m類产轉換器轉換成-類比樂器信 ΐ轉至一第二數位至類比轉換 器轉換成類比聲音信號；以及將該類比举写作缺 及該類比聲音信號組合*成。類比樂虎 目的，本發明之—種音頻資料之記 ♦n八匕括下列步驟：使用一具樂器數位介面 放所想要之音樂；該樂器數位介面之樂器 立相對應之樂器數位介面資料；以及人 馬器以-取樣頻率進行編碼後ί 皮資f。並與音樂產生之樂器數位介面資料 、、且S而成一樂器數位介面_聲波檔案。 、 【實施方式】 眘#7丨一併參照圖1〜圖4，其中圖1繪示本案一較佳 可2資料量之音頻系統之方塊^意 交佳實施例之樂器數位介面-聲 之；^二料圖3繪示本案一較佳實施例 料艿繁立=枓f之日頻系統記錄樂器數位介面資 铲處理程序^圖;圖愤示 播可降低資料量之音頻系統於 可降意圖。如圖1所示，本發明之 且古音頻系統，其具有-播放器卜該 -中模組10;-記憶體單元2〇; 第二數位至;貞比轉數位至類比轉換器40; -而成。類比轉換益50;以及一混合器6〇所組合 下载3音:组1曰〇可連接至-網際網路65以 百曰樂或歌曲，且該網路模組10進一步包括 1322408 . 讲"月丨f日修正替換頁 一實體層11及一資料鏈結層12，其中該資料鏈結層 12例如但不限於可處理一 TCP/1P協定。 該記憶體單元20例如但不限於為一快閃記憶 體靜態隨機存取記憶體（SRAM)或動態隨機存取g 憶體（DRAM)，可供儲存資料且被分割成一程式/ 料區21、—聲波資料區22以及-樂器數位介面資料 9 5¾ 〇 該中央處理器30係耦接至該網路模组丨〇及記 ，體單元20 ’可從該歌曲中取出一樂器數位介面一 聲波檔案（MIDI-wave)並儲存於該程式/資料區21 中，並可從該樂器數位介面-聲波檔案中取出一 器數位介面，料並儲存於該樂器數位介面資料^ 23，且將一聲波（wave)資料儲存於該聲波資料區 22。该中央處理器30可執行一嵌入式作業系統 (embedded OS)且具有一數位信號處理（DSp、)核心 31，以加速其執行速度。此外，該數位信號處理核 心31進一步用來實現一樂器數位介面編程器 (seqUencer)311及一音調產生器312，豆中該樂器 數位介面編程器311可解譯該樂器數位&資千斗二 而該音調產生謂可藉由使用一波：面表貝丄 tab 1 e ’圖未示）技術組合而成各種樂器之聲波資 料’其中該音調產生器312係使用例如但不限於FM 調變或波形表技術。此外，該網路模組〗〇、該記憶 體單元20及該中央處理器30可進一步組成又 式系統（embedded system)，並可執行該嵌入式作 業系統。 其中’該聲波資料係以PCM技術進行編碼，且 9 1322408 • · *"月7日修正替換頁 該PCM技術係以ΙΙΚΗζ之取樣頻率及16位元之資料 解析度進行編碼。 該第一數位至類比轉換器40係耦接至該中央 處理器30，可用以將該樂器數位介面資料轉換成一 類比樂器信號。 該第二數位至類比轉換器50係耦接至該中央 處理器30，可用以將該聲波資料轉換成一類比聲^ 信號。 該混合器6 0係輕接至該第一數位至類比轉換 * 器40及該第二數位至類比轉換器50，可用以組合成 該類比樂器信號及該類比聲音信號。 如圖2所示，本發明一較佳實施例之樂器數位 介面-聲波檔案格式70進一步具有一標頭攔位 (header)71 ; — 同步資料攔位（SYNdata)72 ; — 樂 器數位介面資料欄位（MIDI data)73 ;及一聲波資料 襴位（Wave data)74。 其中，該同步資料攔位72進一步包含一音樂起 φ 始時間欄位（Music Starting Time)721及一聲音起 始時間攔位（Vocal Starting Time)722，用以指示 該樂器數位介面資料及聲波資料何時開始播放；該 樂器數位介面資料欄位73用以儲存樂器數位介面 樂器所輸出之資料；而該聲波資料欄位74則用以儲 存以PCM技術編碼後之聲波資料，其係&ηκΗζ之取 2頻Ϊ及16位元之資料解析度進行編碼，因此，其 資料量將遠低於習知技術使用44ΚΗζ之取樣頻率及 16位元之資料解析度所產生之資料量。 如圖3所示，其繪示本發明之可降低資料量之The technology department encodes with the technique of picking up the spine, and the PCM is used to edit the mother, which can greatly reduce the data resolution of '^ rate & and 5 bits, and the amount of material. For "月丨y曰correct replacement page Frequency: Ben! Ming can reduce the amount of data in the voice network to download the music network module, ▼ connect to - to the network ii group and Kg area; - the central processor, coupled to the digital interface of the instrument and two removed from the song - In the middle of the program, the program/data area digital interface data and storage/face: the sound wave file is taken out of a music sheet; the material = class::= the first step is to process the digital interface of the instrument.怠 The central processing unit of the instrument can be followed by the digital interface data of the instrument as the second skin data, and the first digit to the analog conversion is processed; the second material is respectively mixed through the mixer and then transferred to an analogy. Sound signal quantity is said = lower m to reduce the audio system of the instrument digital interface - sound wave; the instrument number of the medium |: number: interface data into - order: the first class m class converter converted into - analog instrument letter turn Converting the second digit to the analog converter into an analog sound signal; and combining the analog writing with the analog sound signal. For the purpose of analogy, the audio data of the present invention ♦n eight steps include the following steps: using a digital interface of the instrument to put the desired music; the instrument of the digital interface of the instrument is corresponding to the digital interface of the instrument; And the human horse is encoded with the sampling frequency. And with the musical instrument digital interface material, and S into a musical instrument digital interface _ sound wave file. [Embodiment] Shen #7丨 Referring to FIG. 1 to FIG. 4 together, FIG. 1 illustrates the digital interface of the instrument of the audio system of the preferred embodiment of the present invention. ^二料图3 illustrates a preferred embodiment of the present invention: 艿f of the day frequency system recording instrument digital interface shovel processing program ^ map; . As shown in Figure 1, the ancient audio system of the present invention has a - player - the middle module 10; - a memory unit 2 〇; a second digit to; a 转 turn digit to the analog converter 40; Made. The analog conversion is 50; and a mixer 6 is combined to download 3 sounds: the group 1 can be connected to the Internet 65 with a music or song, and the network module 10 further includes 1322408. The replacement page is a physical layer 11 and a data link layer 12, wherein the data link layer 12 is, for example but not limited to, a TCP/1P protocol. The memory unit 20 is, for example but not limited to, a flash memory static random access memory (SRAM) or a dynamic random access memory (DRAM) for storing data and being divided into a program/material area 21, - the sound data area 22 and the - musical instrument digital interface information 9 53⁄4 〇 the central processing unit 30 is coupled to the network module 丨〇, the body unit 20' can take a musical instrument digital interface from the song (MIDI-wave) is stored in the program/data area 21, and a digital interface can be taken from the digital interface of the instrument-sound file, and stored in the digital interface of the instrument ^ 23, and a sound wave ( The wave data is stored in the sound data area 22. The central processing unit 30 can execute an embedded operating system (Embedded OS) and has a digital signal processing (DSp,) core 31 to speed up its execution. In addition, the digital signal processing core 31 is further configured to implement a musical instrument digital interface programmer (seqUencer) 311 and a tone generator 312, wherein the instrument digital interface programmer 311 can interpret the musical instrument digital & And the tone generation can be combined into sound wave data of various instruments by using a wave: face sheet tab 1 e 'not shown) technology, wherein the tone generator 312 uses, for example, but not limited to, FM modulation or Waveform table technology. In addition, the network module, the memory unit 20, and the central processing unit 30 can further form an embedded system and can execute the embedded operating system. Where the 'sonic data is encoded by PCM technology, and 9 1322408 • · *" 7th revised replacement page The PCM technology is encoded with a sampling frequency of 16 and a data resolution of 16 bits. The first digit to analog converter 40 is coupled to the central processor 30 for converting the digital interface data of the instrument into an analog instrument signal. The second digit to analog converter 50 is coupled to the central processor 30 for converting the acoustic data into an analog sound signal. The mixer 60 is lightly coupled to the first digit to analog converter 40 and the second digit to analog converter 50 for combining the analog instrument signal and the analog sound signal. As shown in FIG. 2, the musical instrument digital interface-sound file format 70 of the preferred embodiment of the present invention further has a header 71; - Synchronized Data Block (SYNdata) 72; - Instrument Digital Interface Data Field MIDI data 73; and a wave data 74. The synchronization data block 72 further includes a music starting time (Music Starting Time) 721 and a sound starting time stop (Vocal Starting Time) 722 for indicating the digital interface data and sound wave data of the instrument. When to start playing; the instrument digital interface field 73 is used to store the data output by the instrument digital interface instrument; and the sound data field 74 is used to store the sound data encoded by the PCM technology, which is &ηκΗζ The data resolution of 2 Ϊ and 16 bits is used for encoding. Therefore, the amount of data will be much lower than the data generated by the conventional technique using a sampling frequency of 44 及 and a data resolution of 16 bits. As shown in FIG. 3, it shows that the present invention can reduce the amount of data.
$頻，統記錄樂器數位介面資料及聲 n里程序示意圖。人的聲音及樂器數t介二之 ^态80所產生的音樂必須被同步，但 :別地產生他們自己的資料。如圖所；m 人必須使用一具樂器數位介面之樂，口 要之音半，举哭叙办人二播放所想 料* 1樂為數位介面之樂器8〇將立卽吝士相 位介面資料之資料量將大幅小於，=器弋 :之資料量。當該音樂被播放時、，即 料，以及演唱人的聲音可數位介面資 ΙΙΚΗζ之取樣頻率及丨^ 器100以 :後產生該聲波資料，然 圖2所示之格式輸出組合而成後以 因此11 KHz之取樣頻率m聲日頻道是4KHZ， 頻之44KHz之取樣頻率。=足夠，而不需要一般音 之資料量只有原來聲攱_^此，本發明之人的聲音 本發明之音頻系統戶2之。 所示： 斤而要之資料量N如公式（2) N-樂器數位介面次 公式（2) 貝料+Tvxll〇〇〇xi6位元 其中Tv代表一首歌之聲立— 式（1)中之T。事實上，己錄時間，其通常小於公 演奏的通道聲音訊息（h表音符（notps)呈現音樂 大多是樂器數位介面資料annel Voice Message) 位介面資料量可由公式^，主要成份，且該樂器數 樂器數位介面: 貝料=㈣位元 /=1 游"月7日修正替換頁 公式（3) 其中’ K表示音軌之數量 . 量，Mi是表示每一個通道聲道聲音訊息之數 ，元組及一至二資料位°二，其包括一狀態 idelta~time)4可能包括一至四你且。變化時間 曲之節奏（temp〇)而定。因，兀組，其係依歌 =面資料量亦較音樂波形檔 ^明之樂器數位 人可將樂器數位介面資料及人貝仏制：為小。最後，吾 可得到所需之樂器數位介 沽袞J資料合併即 :圖4所示’其綠示本案 ，。經由圖3所組合而成之音夺m袞序示意 <一伺服器（圖未示）上，使用案可儲存於網路 ，發明圖1所示之音頻系統以網路65 snr完=介以$; 際網路65被下載至該網路槿^樂f案即經由該網 器30可從該音樂槽案中取复亥中央處理 檔案（MIDI-wave)並館存於位介面-聲波 可從該樂器數位介面資料區21中，並 介面資料並儲存於該半考激中取出該樂器數位 該聲波(wave)資料錯|二尸，且將 樂器數位介面編程器3 i 貝料區2 2 ’經由該 及該音調產生器312藉由=數位介面f料 :==各产=聲Ϊ ;二 號該聲波（wave)資^1器由4〇 =成該類比樂器信 貝計餐由一延遲後輸出至該第二 12 丄⑽ 丄⑽ #年"月《曰修正替換頁 ^巧^換謂轉換成該類比聲音信號斤後 用t & ^ 5〇混合後輸出。其中該延遲可藉由使 快速之數位信號處理（DSP)核心31而降低甚至 介ΐ i ^ ΐ祖t發明之音頻系統將樂器之樂器數位 有低資料量及高品質的效果，且= 臭其所節省之資料量的確可高達約7〇 ‘僂鈐低貧料量外，亦可達到經由網際網 Φ 路傳輸鬲口口貝音樂歌曲之目的。 你立i?5所示，其繪示本案一較佳實施例之可降 明jifi料量之播放方法之流程示意圖。本發 df低音頻系統資料量之方法其包括下3 ^ ·、自，屑路讀取一歌曲之樂器數位介面-聲 二，並將其樂器數位介面及聲波各^ 1 ? t tz ^ if：m ^π 位介面訊息(;:2) 樂器數 種==:合成不同之音 f步驟3);直接將聲波資料輸入ί 一；1 = (及步將二類比樂器信號及該類比 於步驟1中，使用具有一樂 八 80,生-樂器數位介面資料，/其° ‘ 立工 面資2= 中於t樂器數位介面資料區^ ;乂 ’提供一樂器數位介面編程器3^， 13 1322408 月丨/日修正替換頁 其可解譯該樂器數位介面資料成一序列之 息；其中，該樂器數位介面編程器31、係 勺由該數位信號處理核心31實施，其可解譯該樂琴 时於步驟3中，提供一音調產生器312，將各 ff位介面訊息組合成不同之音調後輸入至5 :數位至類比轉換器40轉換成一類比樂器信號；其 qi眘ί日Ϊ產生器312亦可由該數位信號處理核心 去一 ，八可藉由使用一波形表（wave table，圖 未不）技術合成各種樂器之聲波資料。 ，步驟4中，直接將聲波資料輸入至一第二 位至類比轉換器50轉換成一類比聲音信號。 中：將該類比樂器信號及該類比聲音 ;其中，該類比樂器信號及該類比聲 曰七5虎之組f可藉由該混合器6〇實施。 因，藉由本發明之可降低音頻系統資料量之 ί二、二之樂器數位介面音執資料與只使 資料Λ率^聲音⑽結合，崎到具有低 筋名夕次貝之θ樂歌曲，經由電腦模擬後其所 :1m:確可高達約職上。除可降低資 曲之目的’。、可達到經由網際網路傳輸高品質音樂歌 々牌^ ΐ ’本發明亦提供—種樂器數位介面資料之 圖。本發明之坐哭^己錄方法之流程示意 列乂驟:使用-具樂器數位介面之樂器80“放ί %/丨月1/日修正替換頁 4要之音樂（步驟丨）；該樂器數位介面之樂器8〇立 即產手相對應之樂器數位介面資料（步驟2);以及 士的聲音可經由一 P C Μ編碼器1 〇 〇以一取樣頻率進 行，碼後產生該聲波資料並與音樂產生之樂器數 ，介面資料組合而成一樂器數位介聲 (步驟3)。 |叹細系 於步驟2中’該樂器數位介面之樂器立即產生 樂巧數位介面資料；其中，該樂器數位介 旦貧料==心|^+〇8位元，其中，κ表示音執之數 示通道聲音訊息之數量，^是表示每一個聲 曰二之訊息，其包括一狀態位元組及一至二 f兀組，該變化時間（delta-timek可包括一至四 立元"且，其係依歌曲之節奏（tempo)而定。 驟3中’人的聲音可經由一PCM編碼器以一 味二龜ΐ，行編碼後產生該聲波資料並與音樂產 聲以ίί面資料組合而成-樂器數位介面- 編碼頻率以及16位元之資料解析度進行 所揭示者，乃較佳實_，舉凡局部之變 ⑵本去案之技術思想而為熟習該項技s 在顯示於就目的、手段與功效，在 於實用二亦i在要·^Λ發Ϊ合 查委員明察，並祈早=_?=要=^請貴審 感德便。 聊于專利，俾嘉惠社會’實 1322408 卿/月少日修正替換頁 【圖式簡單說明】 圖1為一示意圖，其繪示本案一 可降低資料量之音頻系統播放器之方塊示=例之 樂意^:其繪示本案—較佳ί施例之 樂器數位”面-聲波檔案格式之示意圖。 可降=r/之佳實施例之 及聲音輸入資料時之處^程數位介面資料 圖4為一示意圖，其繪示本案一較 2低資料量之音頻系統於播放時之處理程序示 可降低音ί系：量气佳實施例之 圖6為-示意丄錄干以;，程圖。 【圖式元件標號說明】己錄方法之流程示意圖。 播放器1 實體層11 3路模組10 記憶體單元20 貝，鏈結層12 聲波資料區22 料區21 中央處理器如 ^态數位介面資料區23 樂器數位介面編程号 理核心31 數位至類比轉調產生器批 至類比轉換器' 樂器數位介面—聲波 ，f網路65 同步資料攔位3插案格i 70標頭欄位71 曰樂起始時間攔位721 1322408 1322408$ frequency, the recording of the digital interface of the instrument and the schematic diagram of the sound. The sounds of human voices and the number of instruments are the same. The music produced by 80 must be synchronized, but: Others produce their own data. As shown in the figure; m people must use the music of a digital interface of the instrument, the sound of the mouth is half, and the crying narrator will play the second thing. * 1 Music instrument for digital interface 8 〇 卽吝 相位 phase interface information The amount of data will be significantly less than, = 弋: the amount of data. When the music is played, that is, and the singer's voice can be digitally sampled, the sampling frequency and the device 100 are: after the sound wave data is generated, and the format output shown in FIG. 2 is combined and Therefore, the sampling frequency of 11 KHz m is the sampling frequency of 4KHZ and the frequency of 44KHz. = sufficient, without the need for a general sound, the amount of data is only the original sound _ ^ This, the voice of the person of the present invention, the audio system of the present invention 2 . Shown: The amount of data required by Jin is as in formula (2) N-instrument digital interface sub-formula (2) Beaker + Tvxll〇〇〇xi6 bit where Tv represents the voice of a song - (1) T. In fact, the recorded time, which is usually smaller than the channel sound message of the public performance (h note notes (notps) present music is mostly instrumental interface information annel Voice Message) bit interface data amount can be ^, the main component, and the number of instruments Instrument digital interface: Beaker = (four) bit / = 1 Tour " month 7th correction replacement page formula (3) where 'K represents the number of tracks. Quantity, Mi is the number of sound messages per channel channel, The tuple and one to two data bits ° 2, which include a state of idelta~time) 4 may include one to four you. The time of change depends on the rhythm of the song (temp〇). Because, the 兀 group, the 依 = = = face data volume is also better than the music waveform file ^ Ming instrument number can be the instrument digital interface information and people Beibei system: small. Finally, I can get the required digital display of the instrument. The data is merged as shown in Figure 4. The combination of the sounds of Figure 3 is indicated by a server (not shown), the use case can be stored in the network, and the audio system shown in Figure 1 is invented by the network 65 snr = The Internet 65 is downloaded to the network, and the MIDI-wave file can be retrieved from the music slot via the network device 30 and stored in the bit interface-sound wave. The instrument may be located in the digital interface area 21 of the instrument, and the interface data is stored in the semi-examination, and the sound wave data of the instrument is taken out, and the instrument digital interface programmer 3 i is used. 2 'Through the tone generator 312 by = digital interface f material: = = each production = sonar; the second wave of the wave (wave) ^1 by 4 〇 = into the analog instrument letter shell meal After a delay, the output is output to the second 12 丄(10) 丄(10) #年"月曰曰曰修正=^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The delay can be reduced or even improved by the fast digital signal processing (DSP) core 31. The audio system of the invention has a low data volume and high quality effect, and = stinks The amount of data saved can indeed be as high as about 7 〇 ' 偻钤 low and poor material amount, but also can achieve the purpose of transmitting 音乐 mouth music songs via the Internet Φ road. As shown in Figure 5, it shows a schematic flow chart of a playback method for reducing the amount of material in a preferred embodiment of the present invention. The method of the Df low-audio system data volume includes the following 3 ^ ·, self, chip reading a song instrument digital interface - sound two, and its instrument digital interface and sound waves ^ 1 ? t tz ^ if: m ^π bit interface message (;: 2) number of instruments ==: synthesize different sounds f step 3); directly input sonic data into ί a; 1 = (and step the analogy of the instrument signal and the analogy to step 1 In the middle, the use of a music eight 80, raw-instrument digital interface data, / ° ° 'limen face 2 = in the t-instrument digital interface area ^; 乂 'provide a musical instrument digital interface programmer 3 ^, 13 1322408 months丨/日修正 replacement page, which can interpret the digital interface information of the instrument into a sequence; wherein the digital interface programmer 31 and the scoop of the instrument are implemented by the digital signal processing core 31, which can interpret the music In step 3, a tone generator 312 is provided to combine the ff bit interface messages into different tones and then input to the 5: digits to analog converter 40 to convert into an analog instrument signal; the qi cautionary day generator 312 can also be The digital signal processing core goes to one, eight can be used by using one The waveform table (wave table) is used to synthesize the sound wave data of various instruments. In step 4, the sound wave data is directly input to a second bit to the analog converter 50 to be converted into an analog sound signal. a signal and the analog sound; wherein the analog instrument signal and the analog sound 曰7 5 tiger group f can be implemented by the mixer 6 因. Therefore, by the invention, the audio system data amount can be reduced by two or two. The digital interface of the instrument is combined with the data Λ rate^ sound (10), and the θ music song with the low-fat nickname, the second song, after the computer simulation: 1m: can be as high as the appointment. Reducing the purpose of the résumé'. It can achieve the transmission of high-quality music singers via the Internet ^ ΐ 'The present invention also provides a diagram of the digital interface of the instrument. The flow chart of the method of sitting and crying in the present invention Step: Use the instrument with the digital interface of the instrument 80 "Pick ί % / 1/ 1 / 修正 修改 修改 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换 更换data( Step 2); and the sound of the gentleman can be performed by a PC Μ encoder 1 〇〇 at a sampling frequency, and the sound wave data is generated after the code and combined with the musical instrument number and the interface data to form a musical instrument digital sound (step 3 | 系 于 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 ' ' ' ' ' ' ' ' ' ' ' ' 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该The number of voice signals of the channel is represented by ^, which is a message indicating each of the voices, including a status byte and a group of one to two, the change time (delta-timek may include one to four metrics " Moreover, it depends on the tempo of the song. In step 3, the human voice can be encoded by a PCM encoder, and the sound wave data is encoded and combined with the sound produced by the music. The instrument digital interface - the encoding frequency and the 16-bit image. The data clarity is revealed, it is better _, the local change (2) the technical idea of the case, and the familiarity with the skill s is shown in the purpose, means and effects, in the practical two is also in the ^ Λ Ϊ Ϊ Ϊ 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明 明Talking about patents, 俾嘉惠社会's real 1322408 卿/月少日修正 replacement page [schematic description] Figure 1 is a schematic diagram showing a block diagram of an audio system player that can reduce the amount of data. The joy of ^: It shows the case - preferably the musical instrument digital "face - sound wave file format of the example. Can be reduced = r / the best example of the sound and input data when the ^ digital interface data Figure 4 As a schematic diagram, it shows that the audio system of the present invention has a lower data volume and the processing procedure of the audio system during playback is shown to reduce the sound. FIG. 6 is a schematic diagram of the preferred embodiment. [Graphic component label description] The flow chart of the recorded method. Player 1 physical layer 11 3 channel module 10 memory unit 20 shell, chain layer 12 acoustic data area 22 material area 21 central processor such as ^ state digital interface Data area 23 instrument digital interface programming number core 31 digital to analog transfer generator batch to analog converter 'instrument digital interface - sound wave, f network 65 synchronous data block 3 insert case i 70 header field 71 曰 music Start time stop 721 1322408 1322408
^起始時間欄位722樂器數位介面資料攔位 8聲。波資料攔位74 具樂器數位介面之樂器 PCM編碼器1〇〇 ^驟讀取一歌曲之樂器數位介面-聲波檔 i區中；樂讀位介面及聲波f料存放於各自資 ::樂器數位介面資料/二^“1數二:: £= ：^VTΓί *；! J ；： m奐器4〇轉換成一類比樂器信號； 二ϊπ·直接將聲波資料輸入至一第二數位至類比 轉換成—類比聲音信號；^位至類比 ::厂將該類比樂器信號及該類比聲音信號組合 17^ Start time field 722 instrument digital interface data block 8 sounds. Wave data block 74 instrument PCM encoder with instrument digital interface 1 〇〇 ^ reading a song instrument digital interface - sonic file i area; music reading interface and sound f material stored in their respective resources:: instrument digital Interface data / two ^ "1 number two:: £= :^VTΓί *;! J ;: m奂 4〇 converted into an analog instrument signal; two ϊ π · directly input sound data into a second digit to analog conversion into - analog sound signal; ^ bit to analog:: The factory combines the analog instrument signal and the analog sound signal 17