Design of Gathering system for Audio Signal Based on Labview

摘要

With the development of the computer technology and information technology, voice interaction has been necessary for human-computer interaction. Audio signal acquisition and processing in human-computer interaction are the prerequisite and foundation. As an important component, the computer sound card has the follow functions, such as signal filtering, amplification, sample-and-hold, A / D and D / A conversion functions. By means of PC technology and LabVIEW multithreading technology, low-cost program of the sound card based on the audio signal acquisition and analysis has been proposed, which owns advantages of simple realization, userfriendly, stable and reliable performance.