Sound output devices

A sound output device, comprising:

• a sound output unit, including a housing and a diaphragm disposed in the housing, wherein a front cavity and a rear cavity are respectively provided on two sides of the diaphragm in the housing, the front cavity is acoustically coupled to a sound outlet hole provided on the housing, the sound outlet hole is disposed toward an ear canal of a user, and the rear cavity is acoustically coupled to a pressure relief hole provided on the housing;
• an ear hook, including a first portion and a second portion, wherein the first portion is located between an auricle and a head of the user, and the second portion extends toward a side of the auricle away from the head and is connected to the sound output unit, to the ear hook places the sound output unit near the ear canal without blocking an opening of the ear canal;
• one or more microphones, disposed on the ear hook, configured to collect an ambient sound to generate an electric signal;
• and
• a processing circuit, configured to perform an amplifying processing on the electric signal generated by the one or more microphones and send a processed electric signal to the sound output unit, and the sound output unit generates a sound under an action of the processed electric signal;
• wherein,
• at least one of the one or more microphones is located at the first portion of the ear hook, and a connecting line between the at least one of the one or more microphones and the sound outlet hole passes through the auricle.