低通切比雪夫I型数字滤波器阶数为7阶 在2000Hz通带表现截止在2500Hz阻带边界在过渡带和阻带之间是单调下降波形.
-Low-pass Chebyshev Type I digital filter order is 7 in the 2000Hz band pass-band cut-off at 2500Hz stopband performance in the transition zone and the boundary between the monotonic decline in stopband wave.
卷积码viterbi译码的蝶形算法,可以大大减少卷积码viterbi译码的运算时间-Convolutional codes decoding viterbi butterfly algorithm, convolutional codes can greatly reduce the computing time for viterbi decoding