話(hua)筒的選(xuan)用要根據什(shen)么

要(yao)根(gen)據使(shi)用(yong)(yong)(yong)環境和聲(sheng)源(yuan)特點來決定。在室(shi)內進(jin)(jin)行語言錄(lu)音(yin)，一般選用(yong)(yong)(yong)動(dong)圈式(shi)話(hua)筒(tong)，錄(lu)音(yin)稿件(jian)(jian)架多(duo)少錢，因為(wei)語言的(de)(de)(de)頻帶較窄，使(shi)用(yong)(yong)(yong)動(dong)圈式(shi)話(hua)筒(tong)可(ke)避免產生不必要(yao)的(de)(de)(de)雜音(yin)。進(jin)(jin)行音(yin)樂錄(lu)音(yin)，則(ze)要(yao)選擇性能(neng)好的(de)(de)(de)電容(rong)式(shi)話(hua)筒(tong)，以滿足寬頻帶、大(da)動(dong)態、高保真(zhen)(zhen)的(de)(de)(de)需(xu)要(yao)。若環境噪聲(sheng)大(da)，可(ke)選用(yong)(yong)(yong)超指向話(hua)筒(tong)，以增(zeng)加選擇性。使(shi)用(yong)(yong)(yong)話(hua)筒(tong)時，錄(lu)音(yin)稿件(jian)(jian)架哪(na)家好，要(yao)注意與聲(sheng)源(yuan)保持0.3米左(zuo)右的(de)(de)(de)距(ju)離，以防(fang)(fang)失真(zhen)(zhen)， 但近講話(hua)筒(tong)例外(wai)。運動(dong)中(zhong)的(de)(de)(de)錄(lu)音(yin)，要(yao)用(yong)(yong)(yong)無線(xian)話(hua)筒(tong)。使(shi)用(yong)(yong)(yong)無線(xian)話(hua)筒(tong)，要(yao)注意防(fang)(fang)止干擾和“死區(qu)”，碰到這(zhe)種情(qing)況(kuang)，可(ke)通過改變無線(xian)電頻率和調整收(shou)、發天線(xian)來解決。

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電容型話筒

電(dian)(dian)(dian)(dian)(dian)容型話筒有(you)(you)兩(liang)塊(kuai)金屬極(ji)(ji)(ji)板，其中一(yi)塊(kuai)表(biao)面涂有(you)(you)駐極(ji)(ji)(ji)體(ti)薄膜并將其接地(di)，另(ling)一(yi)極(ji)(ji)(ji)板接在場效應晶體(ti)管的柵(zha)極(ji)(ji)(ji)上(shang)，柵(zha)極(ji)(ji)(ji)與源極(ji)(ji)(ji)之間接有(you)(you)一(yi)個二極(ji)(ji)(ji)管。當駐極(ji)(ji)(ji)體(ti)膜片本(ben)身(shen)帶(dai)有(you)(you)電(dian)(dian)(dian)(dian)(dian)荷，表(biao)面電(dian)(dian)(dian)(dian)(dian)荷地(di)電(dian)(dian)(dian)(dian)(dian)量(liang)為(wei)Q，板極(ji)(ji)(ji)間地(di)電(dian)(dian)(dian)(dian)(dian)容量(liang)為(wei)C，錄音稿件架品牌，則在極(ji)(ji)(ji)頭上(shang)產生電(dian)(dian)(dian)(dian)(dian)壓(ya)U=Q/C，當受到(dao)振(zhen)動或(huo)受到(dao)氣流地(di)摩擦(ca)時，由于振(zhen)動使兩(liang)極(ji)(ji)(ji)板間的距離改變(bian)(bian)(bian)(bian)，即電(dian)(dian)(dian)(dian)(dian)容C改變(bian)(bian)(bian)(bian)，錄音稿件架，而(er)電(dian)(dian)(dian)(dian)(dian)量(liang)Q不(bu)變(bian)(bian)(bian)(bian)，就會引起電(dian)(dian)(dian)(dian)(dian)壓(ya)的變(bian)(bian)(bian)(bian)化(hua)，電(dian)(dian)(dian)(dian)(dian)壓(ya)變(bian)(bian)(bian)(bian)化(hua)的大小(xiao)，反映了外界聲壓(ya)的強弱，這(zhe)(zhe)種電(dian)(dian)(dian)(dian)(dian)壓(ya)變(bian)(bian)(bian)(bian)化(hua)頻(pin)率(lv)反映了外界聲音的頻(pin)率(lv)，這(zhe)(zhe)就是駐極(ji)(ji)(ji)體(ti)傳聲器地(di)工作原理。

北(bei)京杰西藝電子設(she)備有限公司(si)主營話筒(tong)，如需了解更多(duo)詳情，歡迎撥打圖片上的咨詢熱線(xian)！

講(jiang)話用5個話筒分(fen)別都是(shi)什么(me)功(gong)能

是(shi)為了擴大音量，然(ran)后向(xiang)不同(tong)的(de)方(fang)向(xiang)發散(san)。

話(hua)筒(tong)(tong)又(you)稱麥克(ke)風，一種電(dian)(dian)聲器材，屬傳聲器，是聲電(dian)(dian)轉換的(de)換能器，通過聲波作(zuo)用到電(dian)(dian)聲元(yuan)件上產生電(dian)(dian)壓，再轉為電(dian)(dian)能。用于各種擴(kuo)音設備中。話(hua)筒(tong)(tong)種類繁多，電(dian)(dian)路簡單。分析話(hua)筒(tong)(tong)電(dian)(dian)路主要(yao)掌握兩點(dian)：

信號傳輸(shu)回(hui)路(lu)分(fen)析，比較(jiao)簡單，分(fen)析各(ge)種(zhong)話(hua)筒輸(shu)入(ru)插口(kou)電路(lu)。

話筒(tong)(tong)信號放大器分析(xi)，話筒(tong)(tong)放大器是一種小信號低噪聲音頻放大器，分析(xi)話筒(tong)(tong)電平(ping)控制(zhi)電路并不困(kun)難。

以(yi)上內容由北京杰(jie)西藝電子設備有(you)限公司為(wei)您(nin)提供(gong)，今(jin)天我們來分享(xiang)話(hua)筒的(de)相關內容，希望(wang)對同行業的(de)朋友有(you)所幫(bang)助！