南京上海大學(xué)音頻管理值得信賴上海懷嚴(yán)文化傳媒供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="采樣頻率就是采用一段音頻，做為樣本，南京上海大學(xué)音頻管理，因?yàn)閣av使用的是數(shù)碼信號(hào)，它是用一堆數(shù)字來(lái)描述原來(lái)的模擬信號(hào)，所以它要對(duì)原來(lái)的模擬信號(hào)進(jìn)行分析，我們知道所有的聲音都有其波形，數(shù)碼信號(hào)就是在原有的模擬信號(hào)波形上每隔一段時(shí)間進(jìn)行一次"><meta name="keywords" content="南京上海大學(xué)音頻管理,音頻"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" 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tcPro"><section class="home-main container clearfix"><div id="vur4izw" class="twoCol"><div id="t3mjt2z" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_swfw/">商務(wù)服務(wù)</a>?<a href="http://www.cdcfah.com/cp/second-swfw_zlhxx/">展覽會(huì)信息</a>?<a href="http://www.cdcfah.com/cp/third-zlhxx_jypxysz/">教育、培訓(xùn)、藝術(shù)展</a>?南京上海大學(xué)音頻管理值得信賴上海懷嚴(yán)文化傳媒供應(yīng)</p><div id="e0bt9pm" class="leftbox clearfix"><h1>南京上海大學(xué)音頻管理值得信賴上海懷嚴(yán)文化傳媒供應(yīng)</h1><div id="cw7gdne" class="proBig"><div id="tiuoxjq" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038273765192/3596499.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8c2zwog" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038273765192/3596499.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7pjiryk" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>南京上海大學(xué)音頻管理,音頻</p><p><span>***更新：</span>2021-02-03 00:19:43</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="jspryv3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海懷嚴(yán)文化傳媒有限公司</a></p><p><span>聯(lián)系人：</span>曹晨光</p><p><span>郵箱: </span>deforu@163.com</p><p><span>電話: </span>13611988611</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.oranshine.com</p><p><span>手機(jī): </span>021-64458098</p><p><span>地址: </span>宜山路508號(hào)3E室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="37vm2e8" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ycogd77" class="box"><p><p style="text-indent:25px">采樣頻率就是采用一段音頻，做為樣本，南京上海大學(xué)音頻管理，因?yàn)閣av使用的是數(shù)碼信號(hào)，它是用一堆數(shù)字來(lái)描述原來(lái)的模擬信號(hào)，所以它要對(duì)原來(lái)的模擬信號(hào)進(jìn)行分析，我們知道所有的聲音都有其波形，數(shù)碼信號(hào)就是在原有的模擬信號(hào)波形上每隔一段時(shí)間進(jìn)行一次“取點(diǎn)”，賦予每一個(gè)點(diǎn)以一個(gè)數(shù)值，這就是“采樣”，然后把所有的“點(diǎn)”連起來(lái)就可以描述模擬信號(hào)了，很明顯，在一定時(shí)間內(nèi)取的點(diǎn)越多，南京上海大學(xué)音頻管理，描述出來(lái)的波形就越精確，這個(gè)尺度我們就稱為“采樣頻率”。我們常用的采樣頻率是44.1kHz，它的意思是每秒取樣44100次。之所以使用這個(gè)數(shù)值是因?yàn)榻?jīng)過(guò)了反復(fù)實(shí)驗(yàn)（實(shí)際上是那個(gè)時(shí)代才是視頻27/1.0001時(shí)鐘做CD刻錄遺留問(wèn)題），人們發(fā)現(xiàn)這個(gè)采樣頻率合適，南京上海大學(xué)音頻管理，低于這個(gè)值就會(huì)有較明顯的損失，而高于這個(gè)值人的耳朵已經(jīng)很難分辨，而且增大了數(shù)字音頻所占用的空間。雙軌立體聲音頻采用一對(duì)立體聲話筒為主傳聲器，加若干輔助傳聲器的方式進(jìn)行音頻。南京上海大學(xué)音頻管理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京上海大學(xué)音頻管理,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038273765192/3596499.png"></div><p style="text-indent:25px">動(dòng)態(tài)范圍和比特率的關(guān)系是；比特率每增加1比特，動(dòng)態(tài)范圍就增加6dB。所以假如我們使用1比特音頻，那么我們的動(dòng)態(tài)范圍就只有6dB，這樣的音樂(lè)是不可能聽(tīng)的。16比特時(shí)，動(dòng)態(tài)范圍是96dB。這可以滿足一般的需求了。20比特時(shí)，動(dòng)態(tài)范圍是120dB，對(duì)比再?gòu)?qiáng)烈的交響樂(lè)都可以應(yīng)付自如了，表現(xiàn)音樂(lè)的強(qiáng)弱是綽綽有余了。發(fā)燒級(jí)的音頻師還使用24比特，但是和采樣精度一樣，它不會(huì)比20比特有很明顯的變化，理論上24比特可以做到144 dB的動(dòng)態(tài)范圍，但實(shí)際上是很難達(dá)到的，因?yàn)槿魏卧O(shè)備都不可避免會(huì)產(chǎn)生噪音，至少在現(xiàn)階段24比特很難達(dá)到其預(yù)期效果。安徽南京藝術(shù)學(xué)院音頻報(bào)名數(shù)字音頻：指所有用數(shù)字技術(shù)進(jìn)行錄制、儲(chǔ)存和傳送音頻的手段。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京上海大學(xué)音頻管理,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038603159677/4678558.png"></div><p style="text-indent:25px">CD格式：當(dāng)今世界上音質(zhì)好的音頻格式是什么？當(dāng)然是CD了。因此要講音頻格式，CD自然是打頭陣的先鋒。在大多數(shù)播放軟件的“打開文件類型”中，都可以看到*.cda格式，這就是CD音軌了。標(biāo)準(zhǔn)CD格式也就是44.1K的采樣頻率，速率88K/秒，16位量化位數(shù)，因?yàn)镃D音軌可以說(shuō)是近似無(wú)損的，因此它的聲音基本上是忠于原聲的，因此如果你如果是一個(gè)音響發(fā)燒友的話，CD是你的選擇。它會(huì)讓你感受到天籟之音。CD光盤可以在CD唱機(jī)中播放，也能用電腦里的各種播放軟件來(lái)重放。一個(gè)CD音頻文件是一個(gè)*.cda文件，這只是一個(gè)索引信息，并不是真正的包含聲音信息，所以不論CD音樂(lè)的長(zhǎng)短，在電腦上看到的“*.cda文件”都是44字節(jié)長(zhǎng)。注意：不能直接的復(fù)制CD格式的*.cda文件到硬盤上播放，需要使用象EAC這樣的抓音軌軟件把CD格式的文件轉(zhuǎn)換成WAV，這個(gè)轉(zhuǎn)換過(guò)程如果光盤驅(qū)動(dòng)器質(zhì)量過(guò)關(guān)而且EAC的參數(shù)設(shè)置得當(dāng)?shù)脑挘梢哉f(shuō)是基本上無(wú)損抓音頻。推薦大家使用這種方法。</p><p style="text-indent:25px">影視作品中聲音和畫面的關(guān)系：聲音在影視藝術(shù)作品中已經(jīng)有著和畫面同等重要的地位了，有時(shí)甚至還會(huì)超過(guò)畫面的重要性成為影視作品中重要的元素。電影聲、畫之關(guān)系，越來(lái)越出現(xiàn)變化無(wú)窮的境界，新的聲畫語(yǔ)言組合方式也因而不斷被電影藝術(shù)家們推出。影視藝術(shù)作品中聲音和畫面的關(guān)系主要有三種：1畫面占主要地位，聲音烘托畫面。2聲音占主要地位，畫面烘托聲音（音樂(lè)電視、音樂(lè)題材的影片）。3聲音與畫面同樣重要，誰(shuí)也離不開誰(shuí)。影視藝術(shù)作品制作時(shí)賦予畫面與聲音的關(guān)系大致也分三種：1聲畫同步。2聲畫對(duì)位。3聲畫分立。在聲畫分立之時(shí)，聲音一般不會(huì)來(lái)自畫面之中，而以畫外形式出現(xiàn)，但在總體情感、情緒上，又有一種相互映照的關(guān)系。而聲畫對(duì)位，意味著聲音與畫面在情感、內(nèi)涵、情緒、情調(diào)、氛圍、節(jié)奏恰好是錯(cuò)位、對(duì)立的，形成很大反差的。正是由于聲音與畫面的差異、對(duì)立、錯(cuò)位、相反，才更有力地形成一種對(duì)比和對(duì)照，從而用一種反差的方式更強(qiáng)有力地表達(dá)出正面的意義、價(jià)值。質(zhì)量的音頻師必須能夠根據(jù)自己對(duì)影視腳本的理解與感悟以及導(dǎo)演的創(chuàng)作意圖。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京上海大學(xué)音頻管理,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038167759356/6633536.png"></div><p style="text-indent:25px">MP3格式誕生于八十年代的德國(guó)，所謂的MP3也就是指的是MPEG標(biāo)準(zhǔn)中的音頻部分，也就是MPEG音頻層。根據(jù)壓縮質(zhì)量和編碼處理的不同分為3層，分別對(duì)應(yīng)“*.mp1"/“*.mp2”/“*.mp3”這3種聲音文件。需要提醒大家注意的地方是：MPEG音頻文件的壓縮是一種有損壓縮，MPEG3音頻編碼具有10：1~12：1的高壓縮率，同時(shí)基本保持低音頻部分不失真，但是**了聲音文件中12KHz到16KHz高音頻這部分的質(zhì)量來(lái)?yè)Q取文件的尺寸，相同長(zhǎng)度的音樂(lè)文件，用*.mp3格式來(lái)儲(chǔ)存，一般只有*.wav文件的1/10，而音質(zhì)要次于CD格式或WAV格式的聲音文件。由于其文件尺寸小，音質(zhì)好；所以在它問(wèn)世之初還沒(méi)有什么別的音頻格式可以與之匹敵，因而為*.mp3格式的發(fā)展提供了良好的條件。直到現(xiàn)在，這種格式還是風(fēng)靡一時(shí)，作為主流音頻格式的地位難以被撼動(dòng)。但是樹大招風(fēng)，MP3音樂(lè)的版權(quán)問(wèn)題也一直是找不到辦法解決，因?yàn)镸P3沒(méi)有版權(quán)保護(hù)技術(shù)，說(shuō)白了也就是誰(shuí)都可以用。高切濾波器：指家用音頻系統(tǒng)中濾除高頻的濾波器。南京上海大學(xué)音頻管理</p><p style="text-indent:25px">長(zhǎng)期以來(lái)，計(jì)算機(jī)的研究者們一直低估了聲音對(duì)人類在信息處理中的作用。南京上海大學(xué)音頻管理</p><p style="text-indent:25px">音頻藝術(shù)專業(yè)培養(yǎng)的學(xué)生要求具有較高的藝術(shù)素質(zhì)和修養(yǎng)，具備深厚的音樂(lè)功底，熟知各種音頻設(shè)備，同時(shí)又掌握一定的音頻理論及技巧，能在廣播、電視、電影系統(tǒng)和文化藝術(shù)部門從事聲音（音響）設(shè)計(jì)、錄制的高級(jí)專門人才。音頻直觀的，讓人們便于理解的概念就是把自然界中存在的和人們?yōu)榱四撤N需要?jiǎng)?chuàng)造的音響記錄下來(lái)。該專業(yè)對(duì)聲音記錄及處理的質(zhì)量要求很高，大家聽(tīng)到的CD，電視聲，廣播聲，等等，都由該專業(yè)人員經(jīng)過(guò)一系列漫長(zhǎng)的過(guò)程，將聲音記錄，混合等等的處理后，再由各種人們需要使用的電器的揚(yáng)聲器，播放出來(lái)。南京上海大學(xué)音頻管理</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3129174.html</p></div></div></div></div></div><div id="d7mjg39" class="page-right twoColRt"><div id="fo8gfhe" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yifcjgn" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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