초록 ▼

The invention concerns a plate resonator for absorbing sound and including a thin front plate with high elasticity and low internal friction, e.g., made of metal; a back plate which likewise has high elasticity but which has high internal friction; an all-over solid connection between the front and

The invention concerns a plate resonator for absorbing sound and including a thin front plate with high elasticity and low internal friction, e.g., made of metal; a back plate which likewise has high elasticity but which has high internal friction; an all-over solid connection between the front and back plates in the form of a bonded connection (e.g. double-sided adhesive tape); and a border which is closed all around by the back plate but does not prevent sound entering the back plate from the side.

대표청구항 ▼

[ We claim:] [1.] A plate resonator for acoustical damping and sound insulation of air-born sound, comprising:a thin metal front plate;a rear polymer board having a thickness;a whole surface firm adhesive connection between said front plate and said rear board;a lateral border closed on all sides by

[ We claim:] [1.] A plate resonator for acoustical damping and sound insulation of air-born sound, comprising:a thin metal front plate;a rear polymer board having a thickness;a whole surface firm adhesive connection between said front plate and said rear board;a lateral border closed on all sides by said rear board, said border not impeding lateral entry of the air-born sound into said rear board; andwherein the thickness of the rear polymer board is sufficient to allow absorption of the air-born sound at low and mid frequencies.