Welcome to our "Aperion University" series. Here, we will introduce you to some basic acoustics knowledge in a simple and uncomplicated way. We hope it will be useful to you. If you like it, please follow us!
Today we will talk about the development history of movie soundtracks.
As we all know, the earliest movies were silent, and the content was expressed only through the actors' body movements on the screen.
This is also called "silent film," and Charlie Chaplin's comedy film series is the most famous representative work. The sound of the film is added at a later stage.
Later, people placed a microphone to receive sound when filming movies and recorded the sound on the scene, finally realizing the early combination of sound and picture, a mono soundtrack.
For the next fifty years, movie soundtracks remained at the monaural level until the 1970s, when Dolby developed stereo soundtrack technology. This allowed people to place a speaker on each side of the screen while watching a movie, creating a left-right stereo sense of space, also called 2.0 stereo.
Then in 1992, based on stereo sound, movie recording added center, left and right surround and subwoofer tracks, and we called it 5.1 channel.
In 2007, two rear surrounds were added to the original 5.1 channels, and it was upgraded to 7.1 channels. Therefore, the 5.1 and 7.1 channels that everyone is familiar with are very old soundtrack technologies.
In 2012, Dolby Atmos appeared. Simply put, it added height channel surround sound based on the original 5.1/7.1 audio track technology.
For example, if you add 4 height channels, it is called 7.1.4. Then this panoramic spherical audio and video effect is really awesome!
Now there is only the sound coming from the floor. I wonder if there will be speakers on the floor in the future. What will it be called? Ground channel?
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