Articles published by the Radio Society of Great Britain in the February and March 2009 issues of Radcom
PDF copies
Part 1 details of basic principles
Part 2 construction of a simple equaliser circuit
Article reprinted in Danish Amateur Radio Society magazine OZ August 2009
Full article to follow
Sound sample of equaliser circuit with different preset pot resistance values
Sound sample of equaliser circuit via ssb transmitter with different preset pot resistance values
Useful free software:-
Voice Shaper allows you to simulate different equaliser and compressor settings using a PC and sound card
Audacity PC based sound recording and editing software
Frequency Response Plotter Designed for testing loudspeakers, but great for looking at microphone equalisation
