This ICNF 2019 paper by Handel examines coherent and conventional gravidynamic quantum 1/f effects. The research analyzes quantum 1/f noise originating from gravitational interactions, distinguishing between coherent quantum interference effects and conventional decoherence mechanisms in gravitational quantum noise, with implications for understanding fundamental noise in precision gravitational measurements, gravitational wave detectors, and tests of quantum gravity theories where quantum fluctuations of spacetime may manifest as 1/f noise.