These vessels ultimately empty into the hepatic sinusoids to supply blood to the liver. Blood flows through the liver sinusoids and empties into the central vein of each lobule. Additionally, EMH is often observed within the hepatic sinusoids. The Fourier transform formula 88 gives the eigenvalues for pure complex sinusoids. For example, like DMD, Prony's method represents a signal as the superposition of damped sinusoids. Browicz cells, are specialized macrophages located in the liver, lining the walls of the sinusoids. Congested liver sinusoids and perisinusoidal spaces have been reported. By modifying the sum of sinusoids representation, timbral alterations can be made prior to resynthesis. In his book, Jakes popularised a model for Rayleigh fading based on summing sinusoids. The addition of two sinusoids is a linear operation that creates no new frequency components. Often, signals can be represented well as a sum of sinusoids. Hepatocytes are separated from the sinusoids by the space of Disse. Complex samples of real-valued sinusoids have zero-valued imaginary parts and do exhibit folding. Consequently, complex sinusoids do not exhibit "folding".