Abstract: A microphone head device includes a base unit, a microphone head unit and a connecting rod unit. The microphone head unit is disposed on the base unit, and includes a microphone head seat and a dynamic subunit mounted on the microphone head seat. The dynamic subunit includes a mounting seat, a first magnetic member disposed on the mounting seat, a coil surrounding the first magnetic member, and a vibrating plate disposed over the first magnetic member and connected to the coil. The connecting rod unit extends in an up-down direction through the first magnetic member, the mounting seat and the microphone head seat such that the first magnetic member, the mounting seat and the microphone head set are separably secured.

Abstract: A microphone head device includes a base unit, a microphone head unit and a connecting rod unit. The microphone head unit is disposed on the base unit, and includes a microphone head seat and a dynamic subunit mounted on the microphone head seat. The dynamic subunit includes a mounting seat, a first magnetic member disposed on the mounting seat, a coil surrounding the first magnetic member, and a vibrating plate disposed over the first magnetic member and connected to the coil. The connecting rod unit extends in an up-down direction through the first magnetic member, the mounting seat and the microphone head seat such that the first magnetic member, the mounting seat and the microphone head set are separably secured.

Abstract: A microphone includes a main body surrounding a longitudinal axis that extends in a top-bottom direction, a battery holder mounted to the main body, and a protective cover. The protective cover has a cover body pivotally connected to and openably covering the battery holder for retaining a battery therein, and a positioning unit connected to the cover body. The protective cover is pivotable about a pivot axis transverse to the top-bottom direction to turn upward and downward and to move between a closed position, where the positioning unit engages the battery holder, and an opened position, where the positioning unit is disengaged from the battery holder in a direction transverse to the top-bottom direction.

Abstract: A microphone includes a main body surrounding a longitudinal axis that extends in a top-bottom direction, a battery holder mounted to the main body, and a protective cover. The protective cover has a cover body pivotally connected to and openably covering the battery holder for retaining a battery therein, and a positioning unit connected to the cover body. The protective cover is pivotable about a pivot axis transverse to the top-bottom direction to turn upward and downward and to move between a closed position, where the positioning unit engages the battery holder, and an opened position, where the positioning unit is disengaged from the battery holder in a direction transverse to the top-bottom direction.

Abstract: A wireless microphone system includes a microphone and a receiver. The microphone converts sound into audio data, and wirelessly transmits a carrier signal that contains the audio data via a microphone channel. The receiver receives the carrier signal via a receiver channel that matches the microphone channel, and automatically and repeatedly sweeps a plurality of wireless channels. The receiver selects at least one wireless channel that is free of interference to serve as a communication channel, transmits to the microphone a channel switching instruction for causing the microphone to set the communication channel as the microphone channel, and sets the communication channel as the receiver channel.

Abstract: A wireless microphone system includes a microphone and a receiver. The microphone converts sound into audio data, and wirelessly transmits a carrier signal that contains the audio data via a microphone channel. The receiver receives the carrier signal via a receiver channel that matches the microphone channel, and automatically and repeatedly sweeps a plurality of wireless channels. The receiver selects at least one wireless channel that is free of interference to serve as a communication channel, transmits to the microphone a channel switching instruction for causing the microphone to set the communication channel as the microphone channel, and sets the communication channel as the receiver channel.

Abstract: An ear-hanging microphone is adapted to be worn on an ear of a user. The ear has an ear root that is connected to the user's head. The ear-hanging microphone includes a hanger, and a microphone that is connected to the hanger. The hanger includes a hook adapted to be hung on the ear root of the ear, and a pad adapted to resiliently abut against a depression portion of the ear root.

Abstract: A microphone includes a base seat, a tube unit connected the base seat, a sound head, and a cable. The base seat includes a surrounding wall that is formed with at least one through hole, and a base wall that cooperates with the surrounding wall to define a receiving space therebetween, and that has a conical surface for reflecting sound waves toward the through hole. The sound head is disposed in the receiving space, and is spaced apart from the base wall of the base seat. The cable is electrically connected to the sound head and extends through the tube unit.

Abstract: A microphone fixing device is adapted for fixing a microphone to a sound-producing object. The microphone includes a head and a cable electrically connected to the head. The microphone fixing device includes a fixing unit, a buffer seat and a supporting seat. The fixing unit is adapted to be mounted to the sound-producing object, and is formed with at least one cable groove that is adapted for retaining a portion of the cable of the microphone. The buffer seat is mounted on the fixing unit, is spaced apart from the at least one cable groove, and includes at least one resilient wall. The supporting seat is removably mounted on the resilient wall of the buffer seat, and is adapted for supporting the head of the microphone thereon.

Abstract: A microphone fixing device is adapted for fixing a microphone to a sound-producing object. The microphone includes a head and a cable electrically connected to the head. The microphone fixing device includes a fixing unit, a buffer seat and a supporting seat. The fixing unit is adapted to be mounted to the sound-producing object, and is formed with at least one cable groove that is adapted for retaining a portion of the cable of the microphone. The buffer seat is mounted on the fixing unit, is spaced apart from the at least one cable groove, and includes at least one resilient wall. The supporting seat is removably mounted on the resilient wall of the buffer seat, and is adapted for supporting the head of the microphone thereon.

Abstract: A microphone includes a base seat, a tube unit connected the base seat, a sound head, and a cable. The base seat includes a surrounding wall that is formed with at least one through hole, and a base wall that cooperates with the surrounding wall to define a receiving space therebetween, and that has a conical surface for reflecting sound waves toward the through hole. The sound head is disposed in the receiving space, and is spaced apart from the base wall of the base seat. The cable is electrically connected to the sound head and extends through the tube unit.

Abstract: An antenna device includes: an upright antenna rod connected electrically to and extending upward from a connector; an outer casing mounted on the connector for covering the antenna rod; and a conductive member disposed in the outer casing. The conductive member has an intermediate connecting portion connected electrically to a top of the antenna rod, and two spaced apart sensing portions extending respectively and downward from opposite sides of the intermediate connecting portion toward the connector such that the antenna rod is disposed between the sensing portions.

Abstract: An antenna device includes: an upright antenna rod connected electrically to and extending upward from a connector; an outer casing mounted on the connector for covering the antenna rod; and a conductive member disposed in the outer casing. The conductive member has an intermediate connecting portion connected electrically to a top of the antenna rod, and two spaced apart sensing portions extending respectively and downward from opposite sides of the intermediate connecting portion toward the connector such that the antenna rod is disposed between the sensing portions.

Abstract: A personal transmitter for receiving and wirelessly transmitting an audio signal of a microphone includes a case, and a limiting unit disposed in the case. The limiting unit includes a primary circuit for receiving the audio signal of the microphone and adjusting an amplitude of the audio signal. The primary circuit has a variable resistance unit and a forward amplifier coupled together. The limiting unit includes a feedback circuit coupled to the primary circuit for receiving an output of the primary circuit and for feedback control that reduces a gain of the primary circuit when the amplitude of the audio signal exceeds a predetermined input threshold value. The personal transmitter also includes an amplifying unit disposed in the case and coupled to the limiting unit for receiving and amplifying an output of the limiting unit.

Abstract: A mounting device is adapted for mounting a sound pickup device on an object, and includes a mounting unit, a shock absorbing unit, and a coupling unit. The mounting unit includes a mounting member that is adapted to be provided on the object and that has a top side, and a linking member that is disposed on the top side of the mounting member and that has top and bottom sides. The shock absorbing unit includes a resilient body that is disposed on the top side of the linking member and that has a top side. The coupling unit includes a coupling member that is disposed on the top side of the resilient body and that is adapted for connecting to the sound pickup device.

Abstract: A mounting device is adapted for mounting a sound pickup device on a surface of a sound source, and includes a base member and a fastening unit. The base member is adapted to be connected to the sound pickup device. The fastening unit is adapted to be provided between the base member and the surface of the sound source for positioning the base member on the surface of the sound source.

Abstract: A loudspeaker device includes an enclosure, a loudspeaker mechanism acoustically mounted in the enclosure for radiating sound, and a sound guide mounted in the enclosure. The sound guide includes a sound-collecting cover that covers a back side of the loudspeaker mechanism, and a sound duct having a first end in spatial communication with the sound-collecting cover, and a second end connected to the enclosure and in spatial communication with an exterior of the enclosure.

Abstract: A microphone includes a tubular handgrip extending in a longitudinal direction, confining an accommodating space, and having a surrounding wall formed with an opening for access into the accommodating space. A battery-mounting seat is mounted in the accommodating space, and is formed with a battery-receiving groove that extends in the longitudinal direction and that has an open side facing the opening in the surrounding wall of the handgrip. A cover plate is connected pivotally to the battery-mounting seat, and is disposed adjacent to the open side of the battery-receiving groove. A sleeve is sleeved detachably on the surrounding wall of the handgrip for covering the opening in the surrounding wall.

Abstract: A wireless microphone includes a circuit board mounted in a housing, and a common conductor pair mounted on the circuit board. Impedance coils and isolation capacitors are provided to interconnect a charger circuit and a transmitter circuit to the common conductor pair such that, when a direct current power signal is supplied to the common conductor pair, the power signal will be prevented from reaching the transmitter circuit and will be directed to the charger circuit and such that, when the transmitter circuit outputs a microphone pick-up signal for transmission, the microphone pick-up signal will be prevented from reaching the charger circuit and will be directed to the common conductor pair for wireless transmission thereby.