The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable
a.本程序在Windows xp 上調(diào)試通過。
b.在使用時(shí)先用ODBC注冊(cè)數(shù)據(jù)源，數(shù)據(jù)源名：addresslist(名稱不可以寫錯(cuò))
c.第一次運(yùn)行時(shí)，密碼為空。進(jìn)入系統(tǒng)后可以修改密碼。
ITU-T G.729語音壓縮算法。
description:
Fixed-point description of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).
