Research and Design of Virtual Experiment Instrument Based on LabVIEW

Introduces the basic principle of virtual instrument,the virtual instrument development platform LabVIEW characteristic,and proposes the virtual instrument system software design.Takes the audio signal analysis system as an example to verify the practicability and superiority of the virtual experiment instrument.Uses the microphone to collect the measured object generated audio signal,and then through the computer sound card converted to a digital signal,finally by homemade audio analysis virtual instrument to realize the audio signal in time domain analysis,frequency domain analysis and data storage function.