Microphone package

A sensor comprising:

• a substrate;
• a cover, a part of the cover including a magnetic body;
• a film provided between the substrate and the cover, a cavity being provided between the film and the substrate;
• and
• an element provided on the film between the substrate and the cover, the element including a first magnetic layer, a second magnetic layer, and a non-magnetic layer provided between the first magnetic layer and the second magnetic layer.

A sensor comprising:

• a substrate;
• a cover, a part of the cover including a magnetic body;
• a film provided between the substrate and the cover, the film being deformable;
• and
• an element provided on the film between the substrate and the cover, the element including a first magnetic layer, a second magnetic layer, and a non-magnetic layer provided between the first magnetic layer and the second magnetic layer.