Patent ID: 8737659

Claim:
A speaker apparatus comprising: a cylindrical member open on one end side and the other end side; a sounding body that is coaxial with the cylindrical member, arranged on the one end side of the cylindrical member, and driven on the basis of an audio signal; and a diaphragm that is coaxial with the cylindrical member, that is installed on the other end side of the cylindrical member, and that vibrates in response to a sound wave that passes through the cylindrical member; wherein: the cylindrical member functions as a resonance tube by being excited to vibration with the sound wave that is radiated from the sounding body and that passes through the cylindrical member, and the diaphragm functions as a passive radiator by vibrating in response to the sound wave that passes through the cylindrical member; the speaker apparatus comprises an actuator configured to add a vibration component in a direction orthogonal to an end surface of the cylindrical member; and the cylindrical member is configured to output sound in a high pitch range from an outer surface thereof by vibration added by the actuator, and outputs sound in a low pitch range from the outer surface of the cylindrical member by being excited to vibration with the sound wave that is radiated from the sounding body and passes through the cylindrical member.