Wolfson's Class-G amplifiers switch the supply rail voltage to the amplifier by using a dual-mode charge-pump with variable frequency. This decreases power consumption and increases efficiency.
Wolfson's Class-W technology takes this a stage further, and is used in their CODECs, where a digital signal path is present. It includes control logic with predictive signal processing and adaptive dual-mode charge pump. This further reduces power consumption. It also improves audio quality because signal peaks are not clipped and does not introduce extra delays.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.