Early digital systems may have suffered from a number of signal degradations related to the use of analog anti-aliasing filters, e . g ., time dispersion, nonlinear distortion, temperature dependence of filters etc . ( Hawksford 1991 : 8 ).
12.
Even in a transistorised amplifier with hard clipping, the gain of the transistor will be reducing ( leading to nonlinear distortion ) as the output current increases and the voltage across the transistor reduces close to the saturation voltage ( for bipolar transistors ), and so " full power " for the purposes of measuring distortion in amplifiers is usually taken as a few percent " below " clipping.
