Redmi has since officially announced the launch of the Redmi K40 Series via live video at 25:30 on February 25th. According to the company, this event is a “Double flagship” live broadcast. This leads to speculation that the Redmi K40 and Redmi K40 Pro will be launched during the event. Redmi has also announced that it is fully upgrading the Redmi K40 Series sound quality. This series is supported by Dolby Atmos. According to the company, whether it’s built-in stereo speakers or headphones, it emits sound from everyone directions.
Redmi K40 Series Dolby Atmos Working Principles
Furthermore, Redmi showcased the Dolby Atmos technology principles. It emphasizes that the dual speakers can deliver surround sound in all directions. With Dolby Atmos, the device can reproduce any sound effect as a single sound element. This audio output is independent of other parts of the audio track. Whether it’s a child screaming or a helicopter taking off, content creators can accurately separate the sound effect. Users can handle audio elements anywhere in the three-dimensional space without interference.
The headsets and built-in speakers of mobile devices are mostly left and right. To create a realistic pitch and surround sound perception, a two-channel mobile system must first have a head-related transmission function (HRTF). HRTF describes how incoming audio sources from different places around us reach our ears.
Depending on the position of sound emission, one ear can stay behind the other to observe the sound. This means that the quality of the sound on each ear may be slightly different. These differences stem from the disturbance of the listener’s head, torso and outer ears.
Dolby Atmos improves sound quality
Streaming Dolby Atmos blend supports up to 128 simultaneous audio objects. It also contains metadata that describes the location of each object in space. Furthermore, the Dolby Atmos processor on the mobile device can apply a variety of HRTFs to the metadata to display the spatial information in the stereo signal. When listening through headphones, the stereo soundtrack can accurately simulate theatrical sounds (including the top sound effects), creating a breathtaking and spatial experience.
To reproduce the same experience through the device’s built-in speakers, additional processing is required. In addition, speakers will produce a natural “cross-talk” phenomenon in our ears, which is not conducive to the simulation of multiple channels. The Dolby Atmos processor can eliminate this cross-talk and then apply HRTF to create a multidimensional sound field and an effect of the movement of sound objects.