Dolby:
Dolby is a company that specializes in
audio technology and is well-known for developing various audio encoding and
decoding technologies used in the entertainment industry. Dolby's technologies
aim to improve the audio quality and enhance the overall audio experience in
movies, TV shows, music, and other media.
Here are some of the key Dolby technologies
and their versions
1.
Dolby
Stereo (1976)
Dolby Stereo is one of the earliest
audio technologies developed by Dolby. It allowed for two-channel stereo sound,
but its main innovation was the addition of a third audio channel, known as the
surround channel. This third channel enabled the creation of surround sound
effects in theaters, enhancing the cinematic experience.
2.
Dolby
Surround (1982)
Building on Dolby Stereo, Dolby
Surround became a popular home theater technology in the 1980s. It was designed
to create surround sound from two-channel sources (like stereo content) by
encoding the surround information into the audio signal. This technology paved
the way for bringing surround sound to home entertainment systems.
3.
Dolby
Pro Logic (1987)
Dolby Pro Logic was an evolution of
Dolby Surround and became a standard for home surround sound. It introduced a
dedicated center channel for clearer dialogue and improved decoding algorithms
for better surround sound separation. Dolby Pro Logic allowed users to enjoy
surround sound from VHS tapes, DVDs, and broadcast content.
4.
Dolby
Digital (1992, also known as AC-3)
Dolby Digital revolutionized surround
sound in both theater’s and home’s. Its a lossy-audio compression technology
that allows for 5.1 channels of audio, including front left, front right, front
center, surround right, surround left and a low-frequency effects (LFE) channel
for bass. Dolby Digital is widely used in DVDs, Blu-rays, digital broadcasts,
and streaming services.
5.
Dolby
Digital EX (1999)
Dolby Digital EX expanded on Dolby
Digital by introducing an additional surround back channel, creating a
6.1-channel audio setup. This further enhanced the spatial accuracy and
envelopment of the surround sound experience.
6.
Dolby
TrueHD (2006)
Dolby TrueHD is a lossless audio codec
that supports up to 7.1 channels of high-definition audio. It provides
bit-for-bit audio reproduction, delivering superior sound quality compared to
Dolby Digital. Dolby TrueHD is commonly used in Blu-ray discs and
high-definition media formats.
7.
Dolby
Atmos (2012)
Dolby Atmos is an advanced audio
technology that takes surround sound to a new level. Instead of using traditional
channel-based audio, it uses object-based audio, allowing sound to move freely
in 3D space. This means sound can come from above and all around the listener,
creating lifelike and a more immersive experience. Dolby Atmos is widely used
in theaters, home theaters and compatible soundbars and speakers.
8.
Dolby
Atmos for Headphones (2016)
Dolby Atmos for Headphones brings the
immersive audio experience of Dolby Atmos to headphones and gaming headsets,
providing more cinematic experience and a virtual surround sound for gamers and
movie watchers.
Dolby continues to innovate and
develop new audio technologies to enhance the audio experience in various
entertainment formats. Their technologies are widely used in theaters, home
entertainment systems, mobile devices and gaming platforms.
Thank
you for reading. Signing off
Difference between Amplifier and AV Receiver explained, link given below
https://gadgetsandtechnologyblog.blogspot.com/2023/03/what-is-amplifier-and-av.html
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