The bilinear transformation that directly maps the analog low-pass filter to a digital high-pass filter is [img=102x47]17de859f621abed.png[/img].
举一反三
- 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]
- What kind of filter is used to extract a single-freq. harmonic from the harmonic components contained in square wave? A: Low-pass Filter B: High-pass Filter C: Band-pass Filter D: Band-elimination Filter
- 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]
- Design a low-pass digital filter for filtering analog signals. Its passband frequency is1.25kHz，and stopband frequency is 3.4kHz.The sampling frequency is 8kHz.The normalized cutoff frequency of the digital low-pass filter is ( ) A: ωp=2500π，ωs=6800π B: ωp=2500π，ωs=0.85π C: ωp=0.3125π，ωs=6800π D: ωp=0.3125π，ωs=0.85π
- The filter [img=142x47]18031c9cd67f894.png[/img] is a lowpass filter