LECTURE on signals Basic Operations The operations performed on signals can be broadly classified into two kinds Operations on dependent variables Operations on independent variables Operations on dependent variables The operations of the dependent variable can be classified into five types: amplitude scaling, addition, multiplication, integration and differentiation. Amplitude scaling Amplitude scaling of a signal given by equation 1.19, results in amplification x(t) of if x(t) >1, <1. and attenuation if a a =ax(t)……..(1.20) y(t) Amplitude scaling of sinusoidal signal. Addition The addition of signals is given by equation of 1.21. = + (t)……(1.21) y(t) x1(t) x2
LECTURE Basic Operations on signals The operations performed on signals can be broadly classified into two kinds Operations on dependent variables Operations on independent variables Operations on dependent variables The operations of the dependent variable can be classified into five types: amplitude scaling, addition, multiplication, integration and differentiation. Amplitude scaling Amplitude scaling of a signal x(t) given by equation 1.19, results in amplification of x(t) if a >1, and attenuation if a <1. y(t) =ax(t)……..(1.20) Amplitude scaling of sinusoidal signal. Addition The addition of signals is given by equation of 1.21. y(t) = x1(t) + x2 (t)……(1.21)
U1-L3_Basic-Operations-on-signals.docx