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Redmi has since officially announced that it will unveil the Redmi K40 series via live video at 7:30 p.m. on February 25. According to the company, this event is a “Double flagship” live broadcast. This is sparking speculation that the event will see the launch of the Redmi K40 and Redmi K40 Pro. Today Redmi also announced the full upgrade of the Redmi K40 series sound quality. This series comes with a stand for Dolby Atmos. According to the company, whether it’s built-in stereo speakers or headphones, it frees everyone’s sound directions.
Redmi K40 Series Dolby Atmos Working Principles
In addition, Redmi presented the principles of Dolby Atmos technology. He points out that the both speakers can produce surround sound in all directions. With Dolby Atmos, the device can output any sound effect as single audio element. This audio output is independent of the other parts of the audio track. Whether it’s the screams of a child or a helicopter taking off, content creators can accurately separate the sound effect. Users can manage audio elements anywhere in three-dimensional space without interference.
Headphones and built-in speakers on mobile devices are mostly left and right channels. In order to create a realistic pitch and a perception of surround sound, a two-channel mobile system must first have a Head Linked Transmit (HRTF) function. HRTF describes how incoming sound sources from different places around us reach our ears.
Depending on the sound emission position, one ear may be behind the other in perceiving sound. It means the sound quality on each ear may be slightly different. These differences arise from interference on the listener’s head, torso, and outer ears.
Dolby Atmos improves audio quality
Streaming Dolby Atmos mixing supports up to 128 simultaneous audio objects. It also contains metadata that describes the location of each object in space. In addition, the Dolby Atmos processor on the mobile device can apply a variety of HRTF to the metadata to reproduce the spatial information in the stereo signal. When listening through headphones, the stereo soundtrack can accurately simulate theater sound effects (including superior sound effects), creating a spatial and breathtaking experience.
To reproduce the same experience through the device’s built-in speakers, additional processing is required. In addition, the speakers will produce a natural phenomenon of “crosstalk” in our ears, which is not conducive to simulating multiple channels. Dolby Atmos processor can eliminate this crosstalk, then apply HRTF to produce multi-dimensional sound field and audio object movement effect.
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