Before revision: Electronic signals In telecommunication and signal processing, a noise-free system can be characterised by a transfer function, such that the output can be written as a function of the input as When the transfer function comprises only a perfect gain constant A and perfect delay T the output is undistorted.
After revision: Electronic signals In telecommunications and signal processing, a noise-free system can be characterised by a transfer function, such that the output can be written as a function of the input as When the transfer function comprises only a perfect gain constant A and perfect delay T the output is undistorted.