
Qualcomm’s Hexagon DSP is designed to accelerate certain workloads at performance efficiencies well above anything a modern CPU can offer. Video processing or computer vision tasks can be done on the CPU too but with a DSP available for these tasks, the CPU can be freed up for other tasks to increase your system performance. The Hexagon DSP on Qualcomm’s IoT chipset product line is a cluster of an application DSP and sensor DSP. The aDSP or the Application DSP, allows the device to process simple sets of data on low power, without having to wake up the Application processor. The aDSP can run custom applications to perform simple tasks, like hotword detection for voice recognition and low power music playback. The sensor DSP is a separate DSP and aptly named “low power island” which is designed to improve the battery life of always-on use cases, including step or activity counters or sensor-assisted positioning (using your platforms’ sensors to provide more accurate location when you don’t have a strong GPS signal).
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