Measurement and analysis system for friction-induced noise based on sound card

PC sound card has broad application prospects in virtual instrument development.A simple measurement and analysis system for friction-induced noise was designed and realized with LabVIEW as software development environment and with general PC sound card taking the place of expensive commercial data acquisition card.This system could acquire signals in the audio frequency rang designed for sound card accurately,and it also could acquire and analyze friction-induced noise.Thus,the cheap data acquisition and analysis solution based on sound card can be extended to those fields such as ambient noise analysis,sound pressure test and laboratory measurement etc.