虛擬儀器課程設(shè)計--基于聲卡的音頻采集分析儀與信號發(fā)生器設(shè)計(已修改)
2025-01-29 03:04 本頁面
【正文】 課程名稱： 虛擬儀器課程設(shè)計 題 目： 基于聲卡的音頻采集分析儀與信號發(fā)生器設(shè)計 目 錄摘要 3第一章 設(shè)計選題概述 3第二章 設(shè)計內(nèi)容要求 4 4第三章 設(shè)計思想及原理 5第四章 設(shè)計相關(guān)理論基礎(chǔ)知識 5 聲卡采集原理 5 6 7 7 7 8 8第五章 程序分析 8： 8 9 12 12 14 14 15 16（功率、幅度、相位）分析的設(shè)計 1信號的統(tǒng)計分析、失真分析設(shè)計 17 18 19 21總結(jié) 22附錄 23摘要要在LABVIEW環(huán)境中進(jìn)行對聲卡采集編程，就是運(yùn)用常用周期信號及測試領(lǐng)域特殊信號的雙通道模擬輸出。由于專用數(shù)據(jù)采集卡成本比較昂貴、而且和計算機(jī)兼容性比較差等缺點(diǎn)，這個論文就是應(yīng)用性能良好、價格低廉的計算機(jī)聲卡設(shè)計一套基于 LabVIEW 的信號采集分析系統(tǒng)。該系統(tǒng)具有雙通道、高保真、22K 甚至 44KHz 的采樣率，實現(xiàn)了音頻信號的實時采集、實時存儲、回放、信號分析（時域分析和頻域分析）等多種功能。實驗結(jié)果表明：該設(shè)計方案具有設(shè)計簡便、成本低、通用性高、擴(kuò)展性好、界面大方簡潔等優(yōu)點(diǎn)，可廣泛應(yīng)用于工程測量和科學(xué)實驗室等環(huán)境。關(guān)鍵詞：聲卡；數(shù)據(jù)采集；虛擬儀器；LabVIEWAbstract:A study which is based on the sound card collection of audio analyzer and a design of signal generator Programming the sound acquisition in the environment of LABVIEW,that is the dual channel analog output which is using the monly used periodic signal and the special signal of test field. As special acquisition card has many disadvantages, such as the cost of it is expensive and the patibility with puter is bad, and so on. This article is using the puter sound card，which has good performance and is cheap to design a signal collection and analysis system which is based on LABVIEW. The system has a sampling rate which is equipped with dual channel, high fidelity, 22HZ and even 44KHZ, and it realizes the realtime collection of audio signal collection, storage realtime playback, signal analysis and other functions. The experimental results show that the design scheme has many advantages such as simple, low cost, high versatility, good extensibility and generous concise interface, and it can be widely used in engineering survey and science laboratory environment. Keyword: sound card, data collection，virtual instrument , LABVIEW.第一章
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