Hybrid recursive active filtering with adaptive transfer function shaping capability

摘要

There is provided a technique of hybrid recursive active filtering with adaptive transfer function shaping capability. Such technique exemplarily comprise a hybrid recursive active filter, comprising analog power amplifier means in a forward path for amplifying an input signal to generate an output signal, and digital signaling processing means in a feedback loop for applying a feedback signal on the basis of the output signal on the input signal, wherein the digital signaling processing means comprises a plurality of digital feedback paths, each digital feedback path being configured to process the output signal with a path-specific attenuation and a path-specific delay, and combining means for combining processed signals from the plurality of digital feedback paths to generate the feedback signal.