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Pity the audiophile. The term should be an aural counterpart to "cinephile"—as that word means a person who greatly appreciates movies, so "audiophile" should refer to a person who pursues a pure music listening experience. "Audiophile" should properly refer to someone who appreciates listening to music as it was recorded and who isn’t afraid of paying extra for high-quality equipment to chase after a "live" sound. I
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If you’re side hustling, you’ve got a lot on your plate. You might need to switch between making your kids a snack and jumping on a client call within the span of a few minutes. Learning effective ways to switch between tasks is a highly valuable skill. 有被bodog黑过钱吗铮? N
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The pool of talent is thin. Anchors such as Mike Wallace and Ted Koppel don’t come along every day. Nor do executive producers like Don Hewitt and Tom Bettag. It’s interesting to note that today’s network “stars”—Wallace, Koppel, Rather, Jennings and Brokaw, or Hewitt and Bettag behind the scenes—came of age during the era when TV news was hard-news oriented and shaped by the old values of public service. Each served long apprenticeships covering breaking news: Jennings and Koppel spent years overseas, Rather and Brokaw covered Washington when government and politics were more important to the networks, and Hewitt and Bettag polished their craft producing CBS’s flagship evening newscast. Such training is now largely a thing of the past. Many young producers and correspondents are rushed into prime time where the values are market-driven. It is telling that when ABC decided it had to try and save “Good Morning America” it turned to familiar faces, Charles Gibson and Diane Sawyer, who were trained in the old school. New programs need time to develop. From network executives, new programs require patience, a faith in the eventual audience and, often, a willingness to experiment. “60 Minutes” took nearly a decade to ripen into a hit show; the show was tolerated for years because CBS was so profitable that it didn’t need to maximize revenues during every hour of the broadcast day. “Nightline” arose out of the Iranian hostage crisis, when ABC was willing to commit to late night coverage in order to grab attention and enhance its news image; such a scenario would be highly unlikely today, with networks having all but ceded extensive special-events coverage to the all-news cable networks. Quality programs depend on a special bond between the networks and their viewers. In essence, viewers need to believe that the networks are the place to turn for intelligent, thoughtful television journalism. This is the notion behind “branding,” which is so valued in business today and has been an important part of the tradition of network news. For all their flaws, the network news divisions for years differentiated themselves from local TV news or syndicated programs because they promised and delivered a product that was perceived as having integrity and quality. The success of magazines such as “20/20” and “Dateline” stems partly from the power of their network brands; viewers who trust NBC News or ABC News, after years of watching Brokaw, Jennings and Koppel, believe that they can expect the same quality in prime time. The danger, of course, is that the primetime feature and infotainment programs will fail to meet those expectations, and the value of the network brands could erode. S H
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CM-700D色差仪是根据CIE色空间的Lab,Lch原理,测量显示出样品与被测样品的色差△E以及△Lab值。当今时代人们增加了色差仪的购买,同时也增加了很多的问题。下面就来了解下,影响CM-700D色差仪测量颜色的是哪六个因素
1、颜色空间:就颜色而言,存在许多测量系统。目前有五种完整颜色空间可供使用:CIEXYZ;CIEYxy;CIEL*a*b*;CIEL*C*h;和HunterLab。这些量表中的每一个都由三个数字组成,但每个数字的确定方式都是独一无二的。因此,为您的样品使用合适的颜色空间并且每次使用相同的颜色空间以便在样品之间创建统一的标准至关重要。
2、CIE光源:色差仪测量颜色也受到使用什么类型光线的影响。色差仪可以使用许多光源,包括A(钨),F02(冷白荧光灯),C(平均日光)和D65(正午日光)。虽然有充足的理由使用这些光源中的任何一种,但在确定颜色一致性或不同样品的变化时,您必须使用相同类型的光源。
3、CIE标准观察者角度:有两种类型的标准观察员:1931年2度和1964年10度。尽管它们之间存在显着的相似性,但也有可能影响颜色数据的差异。因此,对每个样本使用相同的标准观察者都很重要。
4、仪器照明方式:您选择的色差仪照明方式将对颜色数据的捕获方式产生重大影响。目前通用的色差仪照明方式为45°/0°或0°/45°仪器和漫射/8°球形仪器。选择哪一个将在很大程度上取决于你正在使用的样品的类型;在某些情况下,这也取决于您是否要单独测量外观或颜色。
5、样品制备:样品的适当制备是获得准确颜色数据的重要组成部分。这也是人为因素可能造成测量不一致性一个重要方面。因此,必须制定标准化的样品制备程序。
6、样品测量:样品测量包含许多因素,包括样品定位方式,样品视图区域,测量模式和样品平均读数数量。与样品制备一样,必须采取措施尽量减少样品的变化,包括使用标准化程序或仪器,以尽量减少或消除样品变化的机会。