Abstract: A wireless microphone apparatus includes a wireless microphone, a wireless receiver, an external earphone microphone, an external earphone, and a recording device. The wireless microphone includes a transmission and reception circuit. The wireless receiver includes external earphone microphone volume control circuit, a reception and transmission circuit, and an output port. The external earphone microphone is connected with the wireless receiver. The external earphone is connected with the wireless microphone. After the output port is electrically connected with the recording device, the wireless microphone provides a sound reception function, and the external earphone microphone volume control circuit of the wireless receiver controls an audio signal of the external earphone microphone to be supplied to the recording device simultaneously.

Abstract: A wireless microphone apparatus includes a wireless microphone, a wireless receiver, an external earphone microphone, an external earphone, and a recording device. The wireless microphone includes a transmission and reception circuit. The wireless receiver includes external earphone microphone volume control circuit, a reception and transmission circuit, and an output port. The external earphone microphone is connected with the wireless receiver. The external earphone is connected with the wireless microphone. After the output port is electrically connected with the recording device, the wireless microphone provides a sound reception function, and the external earphone microphone volume control circuit of the wireless receiver controls an audio signal of the external earphone microphone to be supplied to the recording device simultaneously.

Abstract: A wireless microphone structure includes a wireless microphone, a power bank, and a wireless receiver. The wireless receiver is electrically connected with a cell phone and an electronic appliance respectively by a cell phone transmission port and a sound source transmission port, so that the wireless microphone provides a sound source signal to the cell phone and the electronic appliance. The power bank has a top face provided with a recessed charging seat and a bottom face provided with a retaining groove. The wireless microphone is mounted on the charging seat by magnetically attractive connection. The cell phone transmission port protrudes from the top of the wireless receiver and is inserted into and positioned in the retaining groove. The power bank charges the wireless microphone and the wireless receiver constantly after the power bank is charged.

Abstract: A wireless microphone structure includes a wireless microphone, a power bank, and a wireless receiver. The wireless receiver is electrically connected with a cell phone and an electronic appliance respectively by a cell phone transmission port and a sound source transmission port, so that the wireless microphone provides a sound source signal to the cell phone and the electronic appliance. The power bank has a top face provided with a recessed charging seat and a bottom face provided with a retaining groove. The wireless microphone is mounted on the charging seat by magnetically attractive connection. The cell phone transmission port protrudes from the top of the wireless receiver and is inserted into and positioned in the retaining groove. The power bank charges the wireless microphone and the wireless receiver constantly after the power bank is charged.

Abstract: A switching device is adapted for a true diversity receiver and contains: a control switch defined between two microcontrollers of two antennas and configured to switch RF wireless microphone signals so that the two microcontrollers execute a single-receiving dual true diversity program or a dual-receiving single true diversity program. The RF wireless microphone signals are received by the two antennas and are decoded to sound signals by two digital decoders respectively, and the sound signals are sent to two audio signal processors by a multiplexer which corresponds to the two microcontrollers to switch the sound signals of a single-receiving dual true diversity or a dual-receiving single true diversity. Thereafter, the sound signals are output by a sound signal mixer.

Abstract: A switching device is adapted for a true diversity receiver and contains: a control switch defined between two microcontrollers of two antennas and configured to switch RF wireless microphone signals so that the two microcontrollers execute a single-receiving dual true diversity program or a dual-receiving single true diversity program. The RF wireless microphone signals are received by the two antennas and are decoded to sound signals by two digital decoders respectively, and the sound signals are sent to two audio signal processors by a multiplexer which corresponds to the two microcontrollers to switch the sound signals of a single-receiving dual true diversity or a dual-receiving single true diversity. Thereafter, the sound signals are output by a sound signal mixer.

Abstract: An amplifier structure contains an amplifier, and the amplifier includes: a body and a cover rotatably connected with one end of the body. The body includes an inner housing fence defined on the body relative to the cover and configured to house a plurality of charging holders for accommodating multiple wireless microphones respectively. The amplifier further includes an accommodation chamber formed in the inner housing fence. When a power source supplies power to the amplifier via an electric wire, the plurality of charging holders charges the power to the multiple wireless microphones individually.

Abstract: A signal receiving structure of a wireless microphone contains a host controlled by a RS485 and connecting with a plurality of RS485 receivers via plural signal cables. The signal receiving ranges of the plurality of RS485 receivers are overlapped to expand a total receiving range. Any one of the plurality of RS485 receivers transmits at least one microphone signal back to the host through a RS485 remote-control communication interface after receiving the at least one microphone signal. Power is supplied through the plural signal cables from the host, thus expanding the using range of at least one wireless microphone. At least one receiving module in the plurality of RS485 receivers receives the at least one microphone signal, acquires a strong one of the at least one microphone signal by using automatic selection, and outputs the strong one of the at least one microphone signal to the host.

Abstract: A wireless microphone structure contains a cartridge module, an audio output switch, a gain controller, an audio amplifier, and a sound mixer. After the cartridge module receives sounds, the sounds are outputted from the sound mixer via the gain controller and an audio amplifier. A power source supplies power via a regulator circuit. The sound mixer has an input port and an output port of a network cable, so that an input port and an output port of each of at least one wireless microphone are connected together via the network cable.

Abstract: A signal receiving structure of a wireless microphone contains: a host controlled by a RS485 and connecting with a plurality of RS485 receivers via plural signal cables, such that signal receiving ranges of the plurality of RS485 receivers are overlapped so as to expand a total receiving range, and any one of the plurality of RS485 receivers transmits at least one microphone signal back to the host through RS485 remote-control communication interface after receiving the at least one microphone signal, and power is supplied to the plural signal cables from the host, thus expanding using range of at least one wireless microphone. At least one receiving module in the plurality of RS485 receivers receives the at least one microphone signal, acquires a strong one of the at least one microphone signal by using automatic selection, and outputs the strong one of the at least one microphone signal to the host.

Abstract: A wireless microphone structure contains: a cartridge module, an audio output switch, a gain controller, an audio amplifier, and a sound mixer, after the cartridge module receiving sounds, the sounds are outputted from the sound mixer via the gain controller and an audio amplifier so that a power source supplies power via a regulator circuit, characterized in that: the sound mixer has an input port and an output port of a network cable so that an input port and an output port of each of at least one wireless microphone are connected together via the network cable.

Abstract: An amplifier remote-controllable at a front and a rear side includes a speaker located at a front portion, an operational panel located at a rear portion, a CD player, an MP3 player, a battery base, a remote-controlled rear infrared receiver, and a remote-controlled front infrared receiver connected to the remote-controlled rear infrared receiver and located at the front portion. A user, whether standing at the front or the rear side of the amplifier, can use a remote controller to transmit signal to either of the two remote-controlled infrared receivers to operate the amplifier.

Abstract: A duplex-transmission lock-in device between a wireless microphone and a receiver comprises respective infrared duplex transmission modules, each further comprising a receiving/transmitting unit, a plurality of resistors and a plurality of capacitors. Thereby, the infrared duplex transmission module within the microphone will transmit signals to the infrared duplex transmission module within the receiver for firstly checking the identity and the version of the microphone and then continuing to send signals to the receiver; this completes a lock-in process for a duplex communication of compatible data.

Abstract: A handheld wireless speaker comprises a body having a receiving chamber; a positioning seat installed within the receiving chamber. The body further has a battery chamber of receiving at least one battery. A sensor is assembled in the body. A volume control panel is assembled within the body. A plurality of buttons is installed on the volume control panel. The buttons is connected to the backboard of the body. An amplifier plate is assembled in the body. A wireless receiving plate and infrared receiving plate are assembled in the body. A mask cover is installed in the front wall of the body. The mask cover has a light filtering mask. A net mask is installed on a wall of the mask cover. An inner surface of the mask cover is formed with a trumpet facing the net mask; and a CD player is assembled to a backboard of the body.