A washing machine includes a controller for controlling at least the steps of washing, rinsing, and dehydrating, a speaker for receiving an audio signal supplied from the controller and sounding a voice, an external frame of the washing machine, a front panel placed in the external frame at front and having small openings; and a top plate for covering a top section of the external frame. The front panel includes therein: a case, whose sectional view shows like a letter ''L'', having a top opening and a lateral opening on both its ends, and a diaphragm of the speaker mounted at the top openingwith its face orienting downward, a speaker mounting case for covering the speaker, and a slit cover held between the lateral opening and the front panel. The lateral opening is placed directing toward the small openings.