精美PPT模板下載[春苗教育]

1、耳機(jī)里的秘密耳機(jī)里的秘密1優(yōu)講借鑒小組成員小組成員2優(yōu)講借鑒目錄目錄耳機(jī)材料探討耳機(jī)材料探討 Click to add title in here Click to add title in here Click to add title in here 4123ThemeGallery is a Design Digital Content & Contents mall developed by Guild Design Inc.3優(yōu)講借鑒1.耳機(jī)材料探討耳機(jī)材料探討耳機(jī)的分類動(dòng)圈式動(dòng)圈式靜電式靜電式等磁式等磁式 換能方式換能方式 結(jié)構(gòu)結(jié)構(gòu)佩戴形式佩戴形式開放式開放式半開放式半開放

2、式封閉式封閉式耳塞式耳塞式掛耳式掛耳式頭戴式頭戴式4優(yōu)講借鑒1.耳機(jī)材料探討耳機(jī)材料探討關(guān)于耳關(guān)于耳塞材料塞材料塑料材質(zhì)塑料材質(zhì)塑料可以有多塑料可以有多變的外型，一變的外型，一個(gè)聲波可以從個(gè)聲波可以從塑料腔體上做塑料腔體上做多次不規(guī)則的多次不規(guī)則的反射以及簡(jiǎn)單反射以及簡(jiǎn)單的聲音吸收的聲音吸收降低聲音在降低聲音在金屬腔體內(nèi)金屬腔體內(nèi)的諧振及共的諧振及共振，使聲波振，使聲波得到更好的得到更好的傳導(dǎo)傳導(dǎo)金屬材質(zhì)金屬材質(zhì)5優(yōu)講借鑒1.耳機(jī)材料的探討耳機(jī)材料的探討兩種材質(zhì)耳機(jī)對(duì)比結(jié)果：鋁合金更因其造型的鋁合金更因其造型的可呈規(guī)則型多變性，可呈規(guī)則型多變性，能更好地配合腔體設(shè)能更好地配合腔體設(shè)計(jì)，達(dá)到塑料

3、腔體所計(jì)，達(dá)到塑料腔體所不能達(dá)到的解析力和不能達(dá)到的解析力和清晰度清晰度。多次不規(guī)則的反射和吸收多次不規(guī)則的反射和吸收可以對(duì)聲音做出盡可能的可以對(duì)聲音做出盡可能的修飾，一個(gè)好的成熟的塑修飾，一個(gè)好的成熟的塑料腔體對(duì)聲音是有很強(qiáng)的料腔體對(duì)聲音是有很強(qiáng)的提升作用，能讓本身素質(zhì)提升作用，能讓本身素質(zhì)很一般的耳塞單元發(fā)出更很一般的耳塞單元發(fā)出更好的聲音。好的聲音。金屬材質(zhì)金屬材質(zhì)塑料材質(zhì)塑料材質(zhì)6優(yōu)講借鑒1.耳機(jī)材料的探討耳機(jī)材料的探討 TPC（電解銅）：純度為（電解銅）：純度為99.5% OFC（無氧銅）：純度為（無氧銅）：純度為99.995% LC-OFC（線形結(jié)晶無氧銅或結(jié)晶無氧銅）：純度（線形

4、結(jié)晶無氧銅或結(jié)晶無氧銅）：純度在在99.995%以上以上 OCC（單晶無氧銅）：純度最高，在（單晶無氧銅）：純度最高，在99.996%以上，以上，又分為又分為PC-OCC和和UP-OCC 大多數(shù)耳機(jī)線都以銅為原料，一般的純度大多數(shù)耳機(jī)線都以銅為原料，一般的純度(一般用幾一般用幾N表示，比如表示，比如4N、6N）越高導(dǎo)電性越好，信號(hào)失真越）越高導(dǎo)電性越好，信號(hào)失真越小，常見的有：小，常見的有：7優(yōu)講借鑒1.耳機(jī)材料的探討耳機(jī)材料的探討結(jié)論結(jié)論購(gòu)買者對(duì)耳機(jī)音質(zhì)要求人數(shù)最多，普遍接受購(gòu)買者對(duì)耳機(jī)音質(zhì)要求人數(shù)最多，普遍接受45-100元之間的耳機(jī)。元之間的耳機(jī)。可見，人們普遍追求性價(jià)比高的耳機(jī)可見，人

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