Answer: phasing

AnswerCrossword Clue
PHASINGReducing gradually, with 'out'
phasingan electronic effect
phasingThe relationship between the timing of two or more events, or the adjustment of this relationship
phasingThe modification of the sound signal from an electric guitar or other electronic instrument by introducing a phase shift into either of two copies of it and then recombining them
phasingThe action of dividing a large task or process into several stages