Sound insulating glazing device for aircrafts, ground or maritime transportation vehicles, buildings, or others, including glazing, a sealing joint in a shape and size corresponding to the edge of the glazing and designed for assembly on said edge, sound insulation, made of at least two materials, a first resilient material and a second material with less resilience than the first, the sound insulation being used against the field of said glazing, between the glazing and the sealing joint. The invention is also for aircrafts that are equipped with at least a glazing device and a soundproofing method for glazing.