Abstract: A UWB-based low-delay lossless digital audio transmission unit, including an audio input module, an audio processing module, a radio frequency transceiving module and a UWB processing module. The audio processing module is in signal connection with the audio input module and receives a first digital audio signal from the audio input module and transmits the first digital audio signal to the UWB processing module. The UWB processing module is connected with the audio processing module and the radio frequency transceiving module. The radio frequency transceiving module is connected with another digital audio transmission unit to send it the first digital audio signal processed by the UWB processing module and to receive a second digital audio signal from the another digital audio transmission unit. A system and an electronic device having the UWB-based low-delay lossless digital audio transmission unit are also provided.

Abstract: A 5 GHz multichannel lossless wireless audio system, having a transmitter (1) and multiple receivers (2), the transmitter (1) consists of a main signal processing portion (11), a 5G wireless transmitting portion (12), a first single chip portion (13), a LED indicating and displaying portion (14), and a first power supply portion (15). Each receiver (2) consists of a a 5G wireless receiving portion (21), a digital/analog conversion and power amplifying portion (22), a second single chip portion (23), a LED indicating panel portion (24), and a second power supply portion (25).

Abstract: A 5 GHz multichannel lossless wireless audio system, having a transmitter (1) and multiple receivers (2), the transmitter (1) consists of a main signal processing portion (11), a 5G wireless transmitting portion (12), a first single chip portion (13), a LED indicating and displaying portion (14), and a first power supply portion (15). Each receiver (2) consists of a a 5G wireless receiving portion (21), a digital/analog conversion and power amplifying portion (22), a second single chip portion (23), a LED indicating panel portion (24), and a second power supply portion (25).

Abstract: A current analog audio amplifier having an operational amplifier current-reading and voltage-controlling current source, a voltage gain stage, an output buffer stage, a negative feedback circuit, a high-frequency compensation circuit, and a bias circuit. The operational amplifier current-reading and voltage-controlling current source is connected to the voltage gain stage. The voltage gain stage is connected to the output buffer stage. The negative feedback circuit is connected to the operational amplifier current-reading and voltage-controlling current source. The high-frequency compensation circuit and the bias circuit are connected separately to the operational amplifier current-reading and voltage-controlling current source.

Abstract: A 5 GHz wireless stereo sound system having a transmitter and a receiver; the transmitter and the receiver are wirelessly connected via a 5 GHz signal. The 5 GHz wireless stereo sound system wirelessly transmits on a 5.2/5.8 GHz frequency in 24-bit/48K digital only, thereby avoiding interference from wireless devices that transmit on 2.4 GHz frequency band (including Bluetooth and personal area networks), infrared devices and so forth, thus solving the problems of mutual interference between conventional wireless devices and instability of signal transmission, thereby ensuring transmission stability.

Abstract: A current analog audio amplifier having an operational amplifier current-reading and voltage-controlling current source, a voltage gain stage, an output buffer stage, a negative feedback circuit, a high-frequency compensation circuit, and a bias circuit. The operational amplifier current-reading and voltage-controlling current source is connected to the voltage gain stage. The voltage gain stage is connected to the output buffer stage. The negative feedback circuit is connected to the operational amplifier current-reading and voltage-controlling current source. The high-frequency compensation circuit and the bias circuit are connected separately to the operational amplifier current-reading and voltage-controlling current source.

Abstract: The present invention discloses a 5 GHz wireless stereo sound system comprising a transmitter and a receiver; the transmitter and the receiver are wirelessly connected via a 5 GHz signal. The present invention wirelessly transmits on a 5.2/5.8 GHz frequency in 24-bit/48K digital only, thereby avoiding interference from wireless devices that transmit on 2.4 GHz frequency band (including Bluetooth and personal area networks), infrared devices and so forth, thus solving the problems of mutual interference between conventional wireless devices and instability of signal transmission, thereby ensuring transmission stability.