Qualcomm® Snapdragon™ processors are designed to deliver superior mobile virtual reality (VR) experiences, providing powerful sensory qualities you can see, hear and feel. Optimized and engineered to meet the processing demands of a wearable VR headset, a Snapdragon 821 processor contains a Qualcomm® Hexagon™ 680 digital signal processor (DSP), a Qualcomm® Adreno™ 530 graphics processing unit (GPU) and an assortment of sensors—all working together to help transport you to a virtual world.
The VR sight experience requires incredible pixel quantity and quality—making it nearly indistinguishable from the real world.
VR visuals must have the highest possible resolution in order to avoid the “screen-door effect” where pixels are visible. With up to 4K Ultra HD Display resolutions supported by a Snapdragon processor, VR can become truly seamless.
Just as important as high pixel quantity is high pixel quality. Delivering up to 40% faster performance than the previous generation, the Adreno 530 GPU in a Snapdragon 821 processor provides high frame rates and incredibly smooth experiences.
For VR audio to be realistic, it needs to be true-to-life, high-resolution and immersive—making it completely in sync with the corresponding visuals.
To accurately recreate high-fidelity sound for VR, sampling frequency and bits-per-sample should be up to human hearing capabilities. Audio features such as Fluence™ noise filtering and active noise cancellation, as well as custom audio development through low-level DSP access in a Snapdragon processor, allows for low- and high-frequency sounds—like water dripping and birds chirping—to be reproduced properly.
Realistic 3D positional audio makes sound accurate in the real world. In VR, you need that same level of accuracy. With the help of immersive audio and 3D surround sound from a Snapdragon 821 processor, your head position and the location of the sound source in VR adjust dynamically—so it feels like you’re in the midst of the action. For example, sound from a plane flying by will keep moving as both you and the plane do, maintaining consistency.
VR requires intuitive, predictive and responsive interactions that feel like second nature to the user. Features such as natural user interfaces, precise motion tracking and minimal latency help the whole experience seem as real as possible.
For proper perspective, the VR user interface needs precise, on-device motion tracking, so you can interact, move and maintain stability within your environment. Predictive six degrees of freedom (6-DOF) motion tracking detects rotational movement and translational movement—your orientation and position in VR. 6-DOF motion tracking from a Snapdragon 821 processor makes it easy to move in the direction you want.
Reducing system latency is key to stabilizing the virtual world as you move. Any lag in the user interface, whether in the visual or audio, will be very apparent and impact the ability to create immersion—and could create motion sickness. One of the biggest challenges for VR is known as “motion to photon” latency, which is the amount of time between an input movement and the screen being updated. Supporting less than 18 milliseconds in total motion to photon latency, a Snapdragon 821 processor delivers a genuine and natural VR user experience.
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Qualcomm Snapdragon, Qualcomm Hexagon, Qualcomm Adreno, and Fluence are products of Qualcomm Technologies, Inc.