2014年 10月 01日
Perfect speakers for Dolby stereo cinema
In order to play a sound that is realistic, in movie theaters and have been introduced from a relatively old (of Disney "Fantasia", etc. (1940)). 5.1ch surround sound is common in 70 mm movie blockbuster that appeared in the 1950s, 4.0ch surround movie was made in the 35 mm movie of a small part. 1977, adopted the Dolby stereo analog method "Star Wars" became common it is to adopt a surround sound many of the American movies and huge success. Not in the habit of spending money to the sound in the movie world in Japan, spread was delayed significantly.
I will be DTS format using digital compression technology in 1993 is used in "Jurassic Park", attention to the sound quality of the movie theater is enhanced.
It uses a (home version of the Dolby stereo cinema for above) Dolby Surround laserdisc and video tape of American films from the mid-1980s, and that you set the two speakers in the rear and the AV amplifier is a household TV drama is also surround by possible to enjoy surround sound at home. Dissemination of the AV amplifier is advanced than the early 1990s in Japan. The now commonly used as well (see below) handy virtual surround in Japan. Dolby Digital and method using digital AV amplifier DVD and popular video in earnest from the late 1990s, was popularized home even larger, it is from the DTS format.
At present, the number of channels of the surround is described as "5.1ch" or "7.1ch" normal. Speakers usually counted as one in 1ch, speaker of super bass reproduction only (subwoofer) is counted as 0.1 in 1ch in the sense of being narrow-band as compared to the regeneration zone of the speaker of the ordinary. However, it should be noted that these figures do not indicate the ratio of the bandwidth of the subwoofer loudspeakers in the strict sense.
As well as stereo speakers I usually place the front speakers to the left and right 30 ° ahead of (listening position) position of the person listening. To place the center speaker (the position of the front from the people who listen to) the center of the front speakers. If you like movie lines are reproduced more clearly by this often. I placed two on the left and right (also referred to as surround speakers or) Rear speaker (20 ° behind the right beside the position of the person who listens) 110 ° direction from the center speaker. In addition to reproduce the sound you hear from the rear, realism is increased significantly since the reverberation of sound and will be able to express.
by Cantemail | 2014-10-01 06:05