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2.6.1. Consider the composite system shown. All filters are ideal and have delay zero. BSF HPF G=2 fe= 21 kHz G=3 B = 12 kHz
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9(+) b = 4 (4) (2.6.11 BSF G = 2 HPF fc=21kHz G = 3 B - 12 KHZ B = 22KHZ M(+) ВРЕ fc=27KHZ B-18 KHZ BSE fc-Bb fc fc +B/ 11 27Hilf) is high pass filter HPF 6=6 B = 27KHZ ANS b) BPE 4 →4 fc-B2 fc fc+B2 18kHz, 27kHz, 36 KHZ = BPF + Hi (f) Overall transfM(+) = Sinclat - = Sincant) sinant att Sinaat こ Tt ya X (f) 01/2 -9/2 Y lf) X (A) H(f) q c18 Ś 36 KHZ oc a Any

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