acoustic resonator filter
type: Concept
preferred label: صافی تشدیدگر آکوستیکی @fa
related: crystal filter

electromechanical filter
type: Concept
narrower: crystal filter
preferred label: پالایه الکترومکانیکی @fa

surface acoustic wave filter
type: Concept
broader: crystal filter
preferred label: صافی موج آکوستیکی سطحی @fa

crystal filter
type: Concept
alternative label: piezoelectric filter
alternative label: صافی فشاربرقی @fa
broader: electromechanical filter
broader: piezoelectric device
narrower: surface acoustic wave filter
preferred label: صافی بلوری @fa
related: acoustic resonator filter
related: acoustoelectric device
scope note: piezoelectric filter

piezoelectric device
type: Concept
narrower: crystal filter
preferred label: افزار فشاربرقی @fa

acoustoelectric device
type: Concept
preferred label: افزار برقاصوتی @fa
related: crystal filter