102.4 kS/s, 110 dB, 3.4 Hz AC/DC Coupled, 4-Input Sound and Vibration Device—The PCI‑4474 is a data acquisition module specifically designed for sound and vibration applications. It provides four-channel simultaneous dynamic signal acquisition for making affordable, high-accuracy dynamic and transient measurements. The PCI‑4474 also includes software-configurable 3.4 Hz AC/DC coupling and integrated electronic piezoelectric (IEPE) conditioning to ensure precision measurements with microphones, accelerometers, and other transducers that have very large dynamic ranges. Common applications include laboratory, research, and smaller system use.