The bilinear transformation that directly maps the analog low-pass filter to a digital high-pass filter is [img=102x47]17de859f621abed.png[/img].

To design a digital low-pass filter using the bilinear transformation method and analog low-pass filter, assuming that the cut-off frequency of the analog low-pass filter is [img=134x25]1803a1d911e6cbe.png[/img] and the bilinear transformation parameter [img=82x19]1803a1d91a05bd3.png[/img] is selected, the cut-off frequency [img=17x17]1803a1d922ed622.png[/img] of the resulting digital filter is ( ). A: [img=109x25]1803a1d92a87228.png[/img] B: [img=85x25]1803a1d9330f7ad.png[/img] C: [img=74x25]1803a1d93bdee3e.png[/img] D: [img=98x25]1803a1d9443158c.png[/img]

制作Skybox时，为了避免出现纹理拼接时产生的接缝，这些纹理的循环方式应该设置为以下哪一项？（ ） A: Clamp B: Bilinear C: Repeat D: Trilinear

制作Skybox时,为了避免出现纹理拼接时产生的接缝,这些纹理的循环方式应该设置为以下哪一项?【B】 A: Repeat B: Clamp C: Trilinear D: Bilinear

Bilinear transformation [img=90x47]1803a1d90ffbcfb.png[/img] maps analog angular frequency ___ to digital angular frequency [img=16x14]1803a1d918ae65a.png[/img] A: [img=11x14]1803a1d920e09d5.png[/img] B: [img=18x14]1803a1d928e8eb2.png[/img] C: [img=9x18]1803a1d9314f70a.png[/img] D: [img=25x19]1803a1d939dd332.png[/img]

采用双线性变换法设计离散时间低通滤波器（要求通带阻带截止频率和通带阻带最大最小衰减分别是0.2π,0.3π,1dB和20dB）的步骤中错误的是（ ） A: Td=1 B: [N,OmegaC]=buttord(0.2*pi/Td,0.3*pi/Td,1,20,’s’) C: [Bs,As]=butter(N, OmegaC,’s’) D: [B,A]=bilinear(Bs,As,1/Td)