DSP filters essential for comms apps
We've come to expect a great deal from our digital filters. DSL-a miraculous imposition of broadband technology on the installed base of moldy twisted-pair cabling, barely suitable for truncated voice-is but one example. Today, we expect more from our cell phone RF tuners, our digital-camera image processors and the new digital audio players, which get startling audio fidelity from an otherwise questionable serial data stream