Abstract: An apparatus configured as a three-dimensional (3D) printer is disclosed. The apparatus includes a print head assembly, which includes a print head and a nozzle plate, the nozzle plate configured to dispense droplets of liquid provided from the print head. The apparatus includes a build bed configured to receive at least some of the droplets from the nozzle plate, and a service station. The service station includes a spittoon assembly configured to receive at least some of the droplets from the nozzle plate, a vacuum knife assembly configured to remove at least one of: debris, or at least some of the droplets from a surface of the nozzle plate, and a non-contact wash assembly comprising a plurality of weirs configured to upwell a washing fluid and immersively receive the nozzle plate in the washing fluid.

Abstract: In a live audio presentation system, a stage rack and a front of house rack are interconnected by a transmission medium that transmits digital audio data and control information between them. Packets of digital audio data and control information are sent at the audio sampling rate. The packets of data are encoded using an encoding technique that provides unique codes that may be detected, thus enabling clock recovery of a clock signal embedded in the data packets. Data packets may include data for error checking. A serial digital transmission medium may be used as the transmission medium. Such a transmission medium uses low voltage signals and supports high bit rates. The system is synchronized by the FOH rack which transmits data to the stage rack according to a local audio sample clock or an external audio sample clock to which it synchronizes. This clock is embedded in data packets sent to the stage rack.

Abstract: In a live audio presentation system, a stage rack and a front of house rack are interconnected by a transmission medium that transmits digital audio data and control information between them. Packets of digital audio data and control information are sent at the audio sampling rate. The packets of data are encoded using an encoding technique that provides unique codes that may be detected, thus enabling clock recovery of a clock signal embedded in the data packets. Data packets may include data for error checking. A serial digital transmission medium may be used as the transmission medium. Such a transmission medium uses low voltage signals and supports high bit rates. The system is synchronized by the FOH rack which transmits data to the stage rack according to a local audio sample clock or an external audio sample clock to which it synchronizes. This clock is embedded in data packets sent to the stage rack.