The present disclosure relates to microphones and electronic devices having the same. A microphone may include a housing for receiving vibration signals; a converting component inside the housing for converting the vibration signals into electrical signals, and a processing circuit for processing the electrical signals. The converting component may include a transducer and at least one damping film attached to the transducer.

A terminal device includes: a housing; an audio output module; and a driving module, connected to the audio output module to drive the audio output module to move between a first position and a second position. The first position is located inside the housing, and the second position is located outside the housing. When the audio output module is in an audio output state, the audio output module is driven to move to the second position. When the audio output module exits the audio output state, the audio output module is driven to move to the first position.

A mechanical frequency upconverter includes a body having a cavity. A low-frequency membrane is coupled to the body and arranged adjacent to the cavity. The low-frequency membrane is a permanent magnet or a permanent magnet is affixed to the low-frequency membrane. A high-frequency membrane is coupled to the body and arranged adjacent to the cavity. The high-frequency membrane includes a magnetic metal. Oscillation of the low-frequency membrane at a first frequency causes the high-frequency membrane to oscillate at a second frequency, which is higher than the first frequency.

A supporter for use in an electroacoustic transducer device including a housing and an electroacoustic transducer mounted to the housing using the supporter, the supporter including: a truncated conical shaped body including: a first portion configured to be held in contact with the electroacoustic transducer at a first position; and a second portion configured to be held in contact with the housing at a second position, wherein the second position is disposed spaced from the first position along an axial direction of an axis of the truncated conical shaped body.

The present application provides a method of manufacturing a resonant panel (200) of a flat panel loudspeaker. The method comprises: pressing a resonant panel blank between a first pressing surface (302) and a second pressing surface of a press, whereby to form the resonant panel (200) of the flat panel loudspeaker. The second pressing surface substantially opposes the first pressing surface (302). The first pressing surface (302) comprises at least one tool relief region (306, 312, 314, 316, 318), whereby to form at least one corresponding respective panel relief region (206, 212, 214, 216, 218) in a surface of the resonant panel (200).

A loudspeaker includes a sound channel extending between the vibrating region of a membrane and the outer side of the loudspeaker, the central axis of the sound channel extending perpendicular to the membrane. The sound channel includes a wave front shaping portion arranged to transform the substantially flat wave front of the sound emitted from the membrane into a wave front having a cross section in the shape of a circular segment. The wave front shaping portion is divided into multiple sub-channels by divider walls that extend from an entrance opening to an exit opening of the wave front shaping portion. Seen in cross section the side walls of each sub-channel converge towards each other from the entrance opening to the exit opening. The centre line of each of the divider walls, seen in cross section, converge towards each other adjacent the exit opening.

A vibration output apparatus (1) includes a vibration transmission member (20), an acoustic vibration output unit (10), and a cushion (30). The vibration transmission member (20) is formed by integrating a body plate (21) and a support portion (22). The support portion (22) is in contact with a vibration plate (100) and supports the body plate (21). The body plate (21) has an opposite surface (21a) opposite to a vibration surface (100u) of the vibration plate (100) and forms an opposite space (S1) between the vibration surface (100u) and the opposite surface (21a). The acoustic vibration output unit (10) is disposed on a rear surface (21b) of the opposite surface (21a) of the body plate (21) and is configured to output an acoustic vibration. The support portion (22, 23) is not in contact with the cushion (30).

A loudspeaker includes a sound channel extending between the vibrating region of a membrane and the outer side of the loudspeaker, the central axis of the sound channel extending perpendicular to the membrane. The sound channel includes a wave front shaping portion arranged to transform the substantially flat wave front of the sound emitted from the membrane into a wave front having a cross section in the shape of a circular segment. The wave front shaping portion is divided into multiple sub-channels by divider walls that extend from an entrance opening to an exit opening of the wave front shaping portion. Seen in cross section the side walls of each sub-channel converge towards each other from the entrance opening to the exit opening. The centre line of each of the divider walls, seen in cross section, converge towards each other adjacent the exit opening.

The present application provides a method of manufacturing a resonant panel (200) of a flat panel loudspeaker. The method comprises: pressing a resonant panel blank between a first pressing surface (302) and a second pressing surface of a press, whereby to form the resonant panel (200) of the flat panel loudspeaker. The second pressing surface substantially opposes the first pressing surface (302). The first pressing surface (302) comprises at least one tool relief region (306, 312, 314, 316, 318), whereby to form at least one corresponding respective panel relief region (206, 212, 214, 216, 218) in a surface of the resonant panel (200).

Loudspeaker enclosures and loudspeaker devices are provided. In some embodiments, a loudspeaker device is provided, the loudspeaker device comprising: a loudspeaker enclosure, comprising: a rear side; and a front side of the loudspeaker enclosure comprising: a lower portion of the front side comprising a first opening for receiving a first loudspeaker and a second opening for receiving a second loudspeaker; and an upper portion of the front side comprising a third opening for receiving a third loudspeaker, a first port, and a second port, wherein a distance from the lower portion of the front side to the rear side is greater than a distance from the upper portion of the front side to the rear side; the first loudspeaker positioned in the first opening; the second loudspeaker positioned in the second opening; and the third loudspeaker positioned in the third opening.