The Netflix An update has been released to the Android version of the app, which promises to offer "studio quality" sound to your daily TV watching.
Η company changes the audio encoding to xHE-AAC or Extended High Efficiency AAC, which is a newer version of it HE-AAC which the company uses so far.
This form of audio encoding was first introduced in 2012 by Fraunhofer I.I.S. and was primarily designed for use in web streaming and streaming services, due to its high compression ratio and low bit rate 6kbps for monophonic sound and from 12kbps for stereo, which can reach up to 500kbps and above.
It can also have variable bit-rate flow which can be changed automatically depending on the quality of the connection and the bandwidth used.
The other main feature of coding xHE-AAC is that it has loudness and dynamic range control (dynamic range adjustment) at encoder level, which allows you to create and use multiple dynamic range profiles for different listening conditions - such as playing on a Smartphone speaker, listening through headphones or through a Home Theater - automatically changing in the relevant profile that is necessary to have the best listening experience.
The Netflix claims to improve the clarity of the movie dialogs we watch even when watching content on a Smartphone speaker even in noisy environments, as the volume has smoothed out the dialogue and the overall dynamic range of the sound is automatically compressed to stay above the level environmental noise.
It is not clear however how Netflix determines what the ambient noise levels will be to make these adjustments automatically.
In the tests he did Netflix found that most people preferred the sound quality of the new encoder, and it was no longer necessary to use headphones to watch a movie on their Smartphone, as the compensation applied by the new encoder and the algorithms applied by Netflix made it possible to use the Smartphone speaker as the main audio player.
The new encoder is only available on Android at the moment, which has become his favorite platform Netflix to experiment with the new features, but the company has promised to make it available on other platforms that support the encoder.
Given that almost all platforms, including iOS, macOS and Windows, already support him xHE-AAC, it probably won't take long for Netflix to upgrade with the new encoder.
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