Norton designed the filter in the electrical domain and then used the correspondence of mechanical quantities to electrical quantities to realise the filter using mechanical components .
Edward Norton , around 1930 , designed a mechanical filter for use on phonograph recorders and players .
Edward Norton designed the filter in the electrical domain and then used the correspondence of mechanical quantities to electrical quantities to realise the filter using mechanical components .
Edward Norton , around 1930 , designed a mechanical filter for use on phonograph recorders and players .