#soundproofing

• Antiphon — A material, device, or chemical compound used for soundproofing, noise reduction, or acoustical vibration damping (especially in automotive or construction industries); in Christian liturgical music (theology), it represents a hymn, verse, or psalm sung alternatively by two separate choirs.
• Soundproofing — The act of soundproofing and its result; the technical process of applying an acoustic insulating layer, bituminous mastic, or sound-absorbing material onto a surface to diminish noise, damp mechanical vibrations, and provide an effective barrier against corrosion.
• Antiphonal — Insulating against noise or damping sound vibrations; pertaining to soundproofing or acoustic reduction. In liturgical or religious music (theology), the term describes a hymnal structure or a mode of vocal performance based on the symmetrical alternation and dialogue between two separate choirs.
• Noise-canceling — Isolating, mitigating, absorbing, or canceling noise pollution, parasitic sounds, or unwanted acoustic waves. It applies to insulating materials (sound-absorbing panels, rock wool), highway barriers, engine protective casings, or active electronic technologies (such as ANC headphones) structurally designed to ensure optimal sonic comfort in industrial, urban, or residential environments.