> Another way to do it is with phosphor coatings on the LED that absorb light of one wavelength and emit it at another wavelength. Lights known as phosphor-converted amber (PCA) shift all the light out of the blue and into the yellow part of the spectrum at the cost of some efficiency.

Is this essentially an LED filament bulb? I've replaced all lights in my house now with LED filaments because they look more natural and are omnidirectional.