The NEXUS TDIF 8-channel board is an interface to the TDIF format by Tascam. This format connects, for example, to the DA 88 and DA 98 digital tape machines. The inputs and outputs can be equipped with sample-rate converters for handling asynchronous signals. The XTF board provides for re-quantization of NEXUS 24-bit data to 16-bit or 20-bit formats for external applications. Inaccuracies emerging from truncation errors are minimized by re-quantizing using a dithering algorithm. In addition, a selectively engaged noise-shaping function moves the noise energy up to frequency ranges less perceivable to the human ear. The noise reduction achieved in the range below 1 kHz is approximately 15 dB. Noise shaping is computed on the integrated signal processor on the basis of a 5th-order algorithm.