Soundproof material and device including the soundproof material

PURPOSE: To provide a soundproof material having a function capable of effectively and economically executing soundproof, acoustic correction and noise control in a wide frequency range and a soundproofing device including the soundproof material. CONSTITUTION: Relating to the soundproof material including a base material 2 and plural resonators 251 , 252 , 253 ,... formed on the base material 2, plural resonators 25 are constituted of filamentous elements/elements having shapes expanded to surfaces, the structural characteristics such as density, elastic coefficient, shearing modulus, attenuation rate, and pizeoelectric modulus of these elements and the shapes/size of the elements have resonance frequency inherent in each resonator and determined so that sound pressure energy is absorbed from a noise source in the resonance frequency and discharged as mechanical thermal energy/electric energy.