Technology / Home Audio / Equalizer (EQ): A class of electronic filter circuits designed to augment or adjust electronic or acoustic systems. Equalizers can be fixed or adjustable, active or passive. Most consumer audio equallizers divide the spectrum into 3 to 12 bands, allowing each section to be either increased or decreased in amplitude without changing the response of the rest. In the early years of telephony and cinema, the first equalizers were fixed units designed to compensate for losses in the transmission and recording of audio signals. Hence, the term equalizer described electronic circuits that corrected for these losses and attempted to make the output equal to the input. Equalizers permit the modification the frequency response spectrum of the signal passing through them; that is, they modify the amplitude versus frequency characteristics.
Technology / Home Audio / Parametric Equalizer: A multi-band equalizer enabeling control of at least three essential 'parameters' of the internal bandpass filter sections. These parameters being: amplitude, center frequency and bandwidth. This allo MORE
Technology / Home Audio / Graphic Equalizer: A multi-band variable equalizer using slide controls as the amplitude adjustable elements. Named for the positions of the sliders 'graphically' illustrating the resulting frequency response of the equ MORE