Chargeur d` accumulateurs au cadmium-nickel

A combination of state• variable filters and a highly specialised Baxandall tone control network is used in the `parametric` equaliser described in this article, which offers considerable advantages over the more common `graphic` equaliser. Use of a parametric · equaliser allows the frequency response of a domestic hi-fi setu p to be tailored to a degree previously only attainable in recording studios. Such is the versatility of a parametric equaliser that even sceptics who turn up their noses at audio equalisers may be forced to revise their opinions.