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hista10ef2
Wysłany: Pią 11:17, 15 Kwi 2011
Temat postu: air max ltd men's Why are TV Commercials So Loud T
Although noise pollution (often self-inflicted) has robbed our ears of most of their sensitivity, human hearing has a remarkable range. The range of audible volumes is called
dynamic range
. The dynamic range of a TV show is spread between fairly soft and fairly loud sections. The difference between soft (nature sounds, whispered conversation, or relative silence to build suspense, for example) and loud (fight scene, screaming victim, gunshots, screeching tires in car chase) can be considerable. Likewise, a music score can range from diminuendo to crescendo. A sound engineer varies the range to create emphasis or contrast, to create dramatic tension, to build to a climax.
Further reading:
Perceived Loudness: It's not the Volume, it's the Contrast
The Law on Ad Volume
What Can be Done About Loud Commercials?Fight back by muting commercials – and tell the TV or radio station that you do so.Complain to the advertisers who use maximum volume and tell them you will boycott their products.Fast-forward with your TiVOInvest in a TVSR (television sound regulator) or similar gadgetWait. Endure. Technology similar to that used in high-end auto audio systems to adjust volume to engine speed is coming soon to TV (from Dolby) and will provide automatic sound balancing.
Loud TV Ads: No Need for Regulation The Outlook for TV Commercials
Human speech at normal conversational levels falls around the dynamic midrange. Most listeners adjust the volume control so that conversation comes at a level that sounds natural and comfortable to their ears. The occasional screech or explosion or musical crescendo is relatively brief, giving the ears have a chance to recover and adapt to the “normal” level. An extended period of relatively loud or relatively soft sounds leads to a grab for the remote.
TV companies insist that the commercials are really, truly no louder than the show segments that precede and follow them. Studies with decibel meters seem to support them. The ears of the audience are more sensitive to dynamic sound range than most electronic instruments—and those ears disagree with the studies. What's the deal here?
Neither the Federal Communications Commission nor the Canadian Radio-television and Telecommunications Commission specifically regulates the volume of programs or commercials. A broadcast license only restricts the peak power a transmitter can use to send out audio or video signals. That means that the loudest commercial can never exceed the volume of the loudest part of the program. Actually, this is not so much a legal issue as a matter of physics - a transmitter only has so much power.
Dynamic Range of Ads
However, the people who make commercials are often not interested in nuance or dramatic tension. They have thirty seconds to grab the viewer's attention, kidnap it, and hold it for ransom. In other words, many advertisers like it loud. The sound is going to be keyed to the maximum allowable volume, whether it's the announcer's voice, the music
air max tn plus
, or the sound effects. So even though the maximum level of such an ad may be no higher than the maximum level of the show, the average level will be higher. The average
perceived
loudness
of the ad is much greater than that of the show
nike air max turbulence
, and that's what matters to the human ear.
In the meantime
air max ltd men's
, have the remote close at hand – there's always the Mute button.
Read on
Advertising Cost, Complexity and Reputation
Measuring Sound Intensity and Loudness
The Audio Loudness Wars
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