Question: ? ( 3 ) C o n s i d e r a d i s c r e t e t i m e

?(3)ConsideradiscretetimeLTIsystemwithafrequencyresponseH(e^(j\omega))anda
correspondingimpulseresponseh[n].
Thefollowingcluesaregivenaboutthesystem:
Clue1:Thesystemiscausal
Clue2:H(e^(j\omega))=H^(*)(e^(-j\omega))
Clue3:TheDTFTofthesequenceh[n+1]isreal
Thelengthoftheimpulseresponseh[n]willbe
? ( 3 ) C o n s i d e r a d i s c r e t e t i m e

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