Parseval’ s Relation Power in the Average signal power Cth harmonic Energy is the same whether measured in the time-domain or the equency-domain Multiplication property x(t)→→ak,y(t)4bk( Both a(t)andy(t) are periodic with the same period T r(t)y()…ck=∑a Proof: ∑aco∑ 少Qbne1(1+m)ot+m=k ∑∑ a1bk-L swot e( t)• Parseval’s Relation Energy is the same whether measured in the time-domain or the frequency-domain • Multiplication Property