Growing up as a teenager in the 90’s I have
always been excited with the Dolby Surround Sound. Like most of the youngsters
addicted to audio during that time, I have experimented with my computer
speakers, wiring them in parallel, serial & ground lifted just to get that
immersive experience of living within the audio waves. Movie-going in a Surround Sound theatre was exceptionally impressive during those years when films having
impressive sound tracks such as Jurassic Park, Independence Day, Mission
Impossible & Terminator 2 were released. The audio experience really kept
up to the stunning visuals for a long
time. Thanks to Dolby’s continuous research, for the rest of the years, we were
on our seats edges with the arrival of the 5.1 and the 7.1 channels, and the blockbuster films confidently adopting it to give us the convincing audio to go
along with the visuals.
But later on, during my college days, while
getting addicted to the Titanic Theme song , I realized that maybe after all, there
was an element missing, that we have not yet realized. Especially listening to the
Richie Jones mix, I felt that this song could have been more impressive if
those beats were coming from different directions, for example, not just from
the right and left, but from all other directions in space. I really imagined
of a day that would come when tens of speakers would hang around the theatre, some of them overhead,
some behind, some to the sides and gives you the capacity to exactly pinpoint from
where the audio is coming . And now today, as I write this post, I am so
excited that the dream has finally come true. Dolby has come up with the ATMOS,
which does exactly that. This is something new and right now, only released in
the U.S. But I am sure that this technology is the one that brings the ‘WOW’
factor that is certainly going to pull us back to the theatres.
Over to the official video and the transcript which I have written , which explains the next generation technology that now
is the final piece in Jigsaw puzzle of experiencing true surround sound.
The below transcript contains the text of the commentary by Stuart Bowling(Dolby Worldwide Technical Marketing Mgr,Cinema). Please note that this is not the official transcript, but which I have personally written so that we could have a better understanding of this remarkable technology. I acknowledge that there may be some differences between the transcript and the audio/video content.
Dolby’s been long associated with audio.
We’ve innovated in the cinema space for over 40 years now, and we are in a
unique position practically no other company occupies. Part of our research
effort has been going on over the past few years was how can we move sound
beyond what we’ve been able to do today
and what would that look like.
So when we look at the illusion of sound in
film and cinema, we started off with Mono:
Single speaker in the middle of the room behind the screen. Then, we moved to Stereo. We added two more speakers and
created two more channels and now we had a dedicated dialog track, and then two
additional speakers for left and right that allowed us to create a better
spread and a sense of imaging inside the room. Then it was the evolution and introduction
of Surround Sound that we were able
to actually put sounds all around the audience. Last surround configuration initially
started as a mono channel. So that we were using as a single source that we send
everything for surround into the audience. Then with 5.1, we were able to split the room in half, and now we have a left
surround and a right surround to allow us to have more sense of movement of
sound across the audience. With 7.1,
we split the room again into four: so we now we had left, right, back wall
left, back wall right. So now we had 4 surround zones instead of two. And that
allowed us even more definition. Logic would make sense that the next
progression would be like a 9.1, or an 11.1 or even a 13.1.
But feedback that we got from content
creators was, it wasn’t going to be good enough, and that’s when we knew we had
to make a more bolder step in moving forward. So what if we could start again,
what if we could go back and completely redefine how we bring the surround
sound experience to audiences. So what Dolby’s bringing now is the next
generation surround format for the industry. Well, with a channel based solution as we have today, if
we look at how I move something around the audience. In 5.1, we had two zones,
so if I wanted to create a sensation of movement, it’s either here... or here.
It goes from one side of the room to the other. It doesn’t really create that sensation
of movement. With 7.1, I can now be on
the side, then behind, then behind, and then to the side again. So it gives you
the sensation of movement, but it doesn’t have that precision of movement.
So the fundamental shift in what’s
happening is that now we are migrating away from channels. The ability to move
a sound from the room now with objects creates it’s precision movement which is
referred to as a Pan-through array.
Now the helicopter has that fluid movement of hitting Speaker no. 1, Speaker
no.2 , Speaker no. 3 , Speaker no. 4 and then having that precision as it goes
around me in the auditorium. And now by placing speakers over the audience, we
can truly create that immersive sound feel, that now makes it feel like the
helicopter is literally buzzing over your head. Overhead Surrounds for the first time adds that upper hemisphere
sound that we’ve been missing from films. With an exchange of technology, that
can come to mixers, I think that things that really excites them, especially
from a creative point of view is the flexibility for the first time of being
able to unmarry sound. When a film is
mixed today, it’s made up of many elements, and
then all those elements are baked
in. You can’t go back and pull the ingredient out. But with objects, you
could now go back in, remove the object. So if the object was a music sound
track, we can go in , pull it out and replace it and have more finite control
& precision in the reproduction of sound.
With channel based solutions as they exists
today, one of the problems we’ve always faced is how we deliver all of these
different formats. We take 7.1 as an example. Then 7.1 is mixed throughout the
entire process of a film. At the very end of the process, the mixes will then
do another creative path to take it to 5.1, because we have multiple
playback systems in the world. Now when they go to a theatre, the only control
that the mixer has is volume level that the movie will play at and
simplistic delay that controls the surrounds. Now what Dolby is proposing is
now they can mix in the biggest mode possible. This now goes out as a single
deliverable file carrying metadata and information that will accurately reflect
what the mixer wanted. This dramatically simplifies the entire process. The
next generation surround format will have all of this great intelligence and in
essence adapts itself to any playback system that is out there. Now we can
literally Author Once and then Optimize Anywhere.
As a movie goer, you already realized as
you go to your local complex, every room is different; their size, geometry,
stadium seating, and if you are putting surround speakers in there, it creates
some challenges as to how you can position them so that you can get uniform
coverage throughout the seating area. As we deliver this next technology, that
is where it really shines by being able to accurately portray in all these
different room sizes, geometry, speaker feeds, it’s a radical shift from
anything we have ever done before. For theatre owners, their primary concern
is always is how I can get more people to come to my theatre. But now with this
better technology of surround sound and sound over the audiences, that now
gives them something to leverage bringing people back into the theatre. With
Dolby’s new technology, we are literally building a pipeline for the industry
and we are going to future proofing the exhibitor by providing them this
technology which will sit with them for a significant period of time.
So what
we are doing is really a huge fundamental shift in the way audio is not only
mixed, but also received inside your theatres and it’s really a huge change
from 5.1 to 7.1, that was only an incremental change and now that what we are
giving you the capability of providing now is enormous, the ability to have pin
point precision, the ability to have these sounds wherever they need to be and
over the audience for the first time is a real differentiator that has never
been happened before. It’s all about the
excitement of what audiences will experience ,but also just the amount of
excitement that you get from a content creator when you walk them through some
of the things that we have done and seeing how excited they were about this,
then that’s definitely worth it.