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

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

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

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

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

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