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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>徐州南廣音頻試題,音頻</p><p><span>***更新：</span>2021-01-26 02:09:52</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="t3ixo8m" 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="dsp3sz2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="nr8alf2" class="box"><p><p style="text-indent:25px">音頻處理：一、音頻媒體的數(shù)字化處理：隨著計(jì)算機(jī)技術(shù)的發(fā)展，特別是海量存儲設(shè)備和大容量內(nèi)存在PC機(jī)上的實(shí)現(xiàn)，對音頻媒體進(jìn)行數(shù)字化處理便成為可能。數(shù)字化處理的中心是對音頻信息的采樣，通過對采集到的樣本進(jìn)行加工，達(dá)成各種效果，徐州南廣音頻試題，這是音頻媒體數(shù)字化處理的基本含義。二、音頻媒體的基本處理：基本的音頻數(shù)字化處理包括以下幾種：不同采樣率、頻率、通道數(shù)之間的變換和轉(zhuǎn)換。其中變換只是簡單地將其視為另一種格式，而轉(zhuǎn)換通過重采樣來進(jìn)行，徐州南廣音頻試題，其中還可以根據(jù)需要采用插值算法以補(bǔ)償失真，徐州南廣音頻試題。針對音頻數(shù)據(jù)本身進(jìn)行的各種變換，如淡入、淡出、音量調(diào)節(jié)等。通過數(shù)字濾波算法進(jìn)行的變換，如高通、低通濾波器。采樣頻率就是采用一段音頻，做為樣本。徐州南廣音頻試題</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州南廣音頻試題,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038729419531/318452.png"></div><p style="text-indent:25px">壓縮器的功能：壓縮器是一種放大器，具有壓縮閥，低于閥值的輸入信號以固有的增益給予放大，高于閥值的輸入信號則按照特定的壓縮比進(jìn)行壓縮。一般有門限、啟動時(shí)間、恢復(fù)時(shí)間和壓縮比可調(diào)。功能：（1）壓縮器可以避免削波失真，提高信噪比。（2）可以避免電平過高引起信號饋入而保護(hù)傳聲器和音箱。（3）在現(xiàn)場擴(kuò)聲中提高平均電平。（4）對傳聲器、電聲設(shè)備信號起到音量平衡作用。（5）改善音質(zhì)。（6）用于產(chǎn)生所謂的“潛入效果”或產(chǎn)生某些“特技效果音”。徐州南廣音頻試題聲波所及的空間范圍稱聲場。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州南廣音頻試題,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038105973314/2961856.png"></div><p style="text-indent:25px">雙軌立體聲音頻和多軌立體聲音頻的區(qū)別：雙軌立體聲音頻采用一對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，因而傳聲器設(shè)置十分重要，音頻成敗很關(guān)鍵，后期混縮工作比較簡單。多軌立體聲音頻采用多路傳聲器拾取信號，因而后期縮混成為音頻成敗的關(guān)鍵。雙軌立體聲音頻效果處理上采用自然效果，依靠聲場進(jìn)行加工，對聲場聲學(xué)條件要求高。多軌立體聲音頻采用近距離拾音，加人工混響的方式，因而對聲場要求不嚴(yán)格，通常采用強(qiáng)吸收短混響的音頻棚。生源方面，雙軌立體聲主要采用錄制傳統(tǒng)聲學(xué)樂隊(duì)，而多軌音頻多錄制流行音樂。</p><p style="text-indent:25px">音頻是個(gè)專業(yè)術(shù)語，音頻一詞已用作一般性描述音頻范圍內(nèi)和聲音有關(guān)的設(shè)備及其作用。人類能夠聽到的所有聲音都稱之為音頻，它可能包括噪音等。聲音被錄制下來以后，無論是說話聲、歌聲、樂器都可以通過數(shù)字音樂軟件處理，或是把它制作成CD，這時(shí)候所有的聲音沒有改變，因?yàn)镃D本來就是音頻文件的一種類型。而音頻只是儲存在計(jì)算機(jī)里的聲音。如果有計(jì)算機(jī)再加上相應(yīng)的音頻卡——就是我們經(jīng)常說的聲卡，我們可以把所有的聲音錄制下來，聲音的聲學(xué)特性如音的高低等都可以用計(jì)算機(jī)硬盤文件的方式儲存下來。音頻不同采樣率、頻率、通道數(shù)之間的變換和轉(zhuǎn)換。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州南廣音頻試題,音頻" src="https://tyunfile.71360.com/UploadFile/huaiyan/637414038515259363/9916345.png"></div><p style="text-indent:25px">“差拍”現(xiàn)象產(chǎn)生的原因：差拍指兩個(gè)頻率幾近相同的聲音疊加時(shí)，由于人耳不能將兩個(gè)音高相近的音分開，當(dāng)兩個(gè)聲波同向時(shí)，它們的合成是兩個(gè)波的和，而當(dāng)兩個(gè)波反向時(shí)，它們的合成是兩波之間的差。兩個(gè)頻率的差就是它們的拍頻。兩個(gè)聲波相遇引起振動的疊加，在同方向上振動，其疊加振動后波形始終在某點(diǎn)上相互加強(qiáng)，方向相反時(shí)候相互干擾，兩個(gè)不同頻率有疊加引起的現(xiàn)象。掩蔽效應(yīng)的定義：掩蔽效應(yīng)指人耳在聽到強(qiáng)音時(shí)難以聽到弱音的現(xiàn)象，尤其頻率相近的聲音。當(dāng)聲音的頻率與掩蓋的噪聲的頻率比較接近時(shí)，以及聲音的方向與掩蓋噪聲的方向比較接近時(shí)，掩蓋效應(yīng)為明顯。掩蔽效應(yīng)應(yīng)是后期混音處理中使立體聲聲像定位與頻率均衡顯得尤為重要的原因，為使各樂器聲部清晰，應(yīng)進(jìn)行頻率均衡和聲像方位處理。拾音器是一種把聲音信號轉(zhuǎn)換為電信號的換能器件。江蘇南廣音頻證書</p><p style="text-indent:25px">其實(shí)任何我們可以聽見的聲音經(jīng)過音頻線或話筒的傳輸都是一系列的模擬信號。徐州南廣音頻試題</p><p style="text-indent:25px">雙軌立體聲音頻和多軌立體聲音頻的區(qū)別：在實(shí)際制作中，雙軌立體聲多采用模擬設(shè)備，音質(zhì)比較好，更人性化，設(shè)備連接簡單。多軌立體聲都采用數(shù)字設(shè)備，信噪比、動態(tài)范圍、非線性失真指標(biāo)非常卓著，能夠進(jìn)行強(qiáng)大的音頻信號處理功能，缺點(diǎn)音質(zhì)有損失，設(shè)備兼容性差。雙軌立體聲音頻在于嚴(yán)格再現(xiàn)原有藝術(shù)聲場，多軌立體聲音頻是再造新的藝術(shù)聲場，二者不僅在技術(shù)上有差異，更重要的是在審美上的差別。多軌立體聲音頻給音頻師更為廣闊的藝術(shù)創(chuàng)作空間，不僅掌握音頻技術(shù)，還必須具備精通的音樂藝術(shù)，藝術(shù)和技術(shù)熔為一爐。雙軌立體聲體現(xiàn)的是“自然的”美，多軌立體聲體現(xiàn)的是“工藝的”美。嚴(yán)格再現(xiàn)藝術(shù)聲場的雙軌立體聲適用于錄制“整體藝術(shù)”，本質(zhì)是創(chuàng)造一個(gè)新的藝術(shù)聲場的多軌立體聲適用于錄制非群體藝術(shù)。徐州南廣音頻試題</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3010670.html</p></div></div></div></div></div><div id="k23heq7" class="page-right twoColRt"><div id="azw2suo" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yifxzby" 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" 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