【正文】 基于單片機的電話語音留言系統(tǒng)設(shè)計學(xué)生學(xué)院 自動化學(xué)院 專業(yè) 自動化 年級班別 04 自動化 3班 學(xué) 號 3104001138 學(xué)生姓名 任智偉 指導(dǎo)教師 熊紅艷 2022．52摘要隨著我國經(jīng)濟建設(shè)的迅猛發(fā)展，公安、鐵路、民航、金融等部門對語音記錄的需求不斷增長。把語音生成技術(shù)用于工業(yè)監(jiān)控系統(tǒng)、自動應(yīng)答系統(tǒng)、多媒體查詢系統(tǒng)、智能化儀表、辦公自動化系統(tǒng)或家用電氣產(chǎn)品中，使它們具有語音輸出功能，使之能在適當?shù)臅r候用語音實時報告系統(tǒng)的工作狀態(tài)、警告信息、提示信息或相關(guān)的解釋說明等，無疑在提高人機通信能力、減少對錯誤處理的遺漏、提高系統(tǒng)性能、降低人們的工作強度等方面都有極大的好處。而數(shù)字錄音系統(tǒng)作為其中的一種，經(jīng)常用于某些監(jiān)主對話系統(tǒng)中，在適當?shù)臅r候用語音實時報告系統(tǒng)的工作狀態(tài)和提示等。數(shù)字錄音系統(tǒng)是將現(xiàn)場的語音模擬信號轉(zhuǎn)變?yōu)殡x散的數(shù)字信號，然后存儲在一定的存儲介質(zhì)上的一種錄音方式，它也是數(shù)字語音處理技術(shù)中常用的一種方式。采用數(shù)字錄音技術(shù)，有較高的效率和自動化程度，錄音時間也長，并可將信息長期保存于存儲介質(zhì)中，同時對語音信息進行編輯整理非常方便，可快速查找。 實現(xiàn)數(shù)字錄音系統(tǒng)可以采用PC機實現(xiàn)和嵌入式系統(tǒng)實現(xiàn)兩種方式。當使用 PC機的時候，由于它的體積龐大，耗電高，造價也高，并且在某些情況下系統(tǒng)的穩(wěn)定性得不到保證所以用PC機來實現(xiàn)前述的各項功能和操作，就受到了一定的限制。而嵌入式系統(tǒng)的體積小，供電方便，造價低，穩(wěn)定性也高，所以得到了廣泛的應(yīng)用。本論文介紹了一種用單片機實現(xiàn)的嵌入式數(shù)字錄音系統(tǒng)，該系統(tǒng)為一個數(shù)字錄音模塊，可以將其封裝在上面進行二次開發(fā)。它采用錄音的原理，錄音時，單片機的CPU將語音信號轉(zhuǎn)換為數(shù)字信號在存儲器中。播放的時候，既可以播放錄音文件，也可以播放提前存儲器中的語音文件。關(guān)鍵詞：語音，數(shù)字，單片機 3Abstract With the growth of the development of the economy,the need for sound Record in the department of Gongan and Railway are is muchUseful for the advance in the munication between the people and the machine ,and for the reducing of the mistake of the disposal in the system of industrial surveillance,the system of the The digital recording system as one of a kind frequently used in some of the DAIJI prison system in the dialogue at an appropriate time to voice realtime reporting system and the work of state and other tips. Digital recording system is the scene of the voice analog signal into a discrete digital signal and then stored in a storage medium on a recording, it is also digital voice processing technologies used in a way. Use of digital recording technology, efficiency and a higher degree of automation, recording a long time, and the information stored in longterm storage medium, while the voice information edited by the very convenient and fast to find. Digital recording system can be used to achieve a PC and embedded systems in two ways. When using a PC when, because of its size, power consumption, high cost, and in some cases, system stability can not be guaranteed so using a PC to achieve the aforementioned functions and operation, Subject to certain restrictions. The small size of the embedded systems, power supply convenience, low cost, high stability, has been widely used. This paper presents a MCU with embedded digital recording system, which As a digital recording module that can be packaged in a second development above. It uses the principles of sound recording, sound recording, the MCU CPU will voice signal into a digital signal in memory. The players, both can play audio files, can also play early in the memory of the audio filesKey words:4目 錄1 緒論 .........................................................................................................................................5 題目背景 ...........................................................................................................................5 語音留言系統(tǒng)的發(fā)展現(xiàn)狀 展望 .....................................................................................6 語音留言系統(tǒng)的應(yīng)用 .......................................................................................................7 本文結(jié)構(gòu) ...........................................................................................................................72硬件總體設(shè)計 ..........................................................................................................................2 系統(tǒng)描述 ..........................................................................................................................8 系統(tǒng)的元件選擇 ...............................................................................................................9 系統(tǒng)功能分析 ...................................................................................................................9 各部分電路的設(shè)計 .........................................................................................................14 振鈴電路 ................................................................................................................14 摘機掛機電路和 DTFM 雙音多頻解碼集成電路 ..................................................14 電話筒檢測電路 .................................................