Oscillatory component for loudspeakers, loudspeaker comprising same, and mobile device equipped with said loudspeaker

A vibration component for loudspeakers, comprising:

• a base layer having a front face and a rear face, the base layer having a first density and being formed of a paper body containing a plurality of fibers;
• an intermediate layer:
• having a first face joined to the front face of the base layer, and a second face on a reverse side of the intermediate layer from the first face,
• having a second density higher than the first density, and
• including a plurality of cellulose fibers as a main component;
• and
• a coating layer provided on the second face of the intermediate layer, the coating layer including an inorganic powder containing a plurality of inorganic fine particles,
• wherein the coating layer further includes a coating material embedding the inorganic fine particles, and
• the coating material has a maximum thickness smaller than a maximum particle diameter of the inorganic fine particles.