Page 273 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

Working
How does surround sound work
Let’s dive into how surround sound works in your home theatre system, giving you that immersive movie experience
right in your living room. The key to understanding home theatre acoustics lies in three main elements:
The strategic placement of left and right speakers to create a sound field
Accurate synchronization of audio with the visuals to enhance the realism
The use of Dolby Atmos sound technology for three-dimensional audio effect
The surround sound system employs multiple speakers that project sound from different directions, including sound
coming from the front. Each speaker outputs specific sounds at precise moments, creating a multidimensional audi-
tory environment. With Dolby Atmos, sounds are not just around you, they’re above too. Mastering these elements
will elevate your home theatre experience to new heights.
What do you need to create surround sound
To create surround sound in your own space, you’ll need a few essential components: multiple speakers, a receiver
or amplifier, and a proper layout plan. It’s key to understand that the number of speakers corresponds to the chan-
nels in your home system. A 5.1 system, for instance, includes five speakers and one subwoofer. Placement of these
components significantly impacts your home theatre acoustics. Front speakers should align with your TV, the center
speaker directly underneath, and the rear speakers should be placed behind your main seating area. The subwoofer,
responsible for low-frequency sounds, can be placed anywhere in the room. An amplifier or receiver is necessary
to process and distribute the sound signals to the speakers. With these elements, you can create surround sound
that truly envelops you. For Dolby Atmos, it is common for Wavetrain Cinemas to be using 16-24 channels of audio
processing. The most common systems are 7.1.4 (7 bed channels in the horizontal plane, 1 LFE bass channel & 4
Atmos height channels).

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CITS : E & H - Electronics Mechanic - Lesson 155 - 159