when fitting multi-channel hearing aids traditional filters with fixed orders rarely give the right compensation over the entire frequency range moderately sloping hearing losses are best fitted using low order filters to avoid peaks or valleys in the compensation while precipitously sloping hearing losses need high order filters to obtain appropriate compensation when fitting the 3 channel senso p38 the varioslopetm filters provide natural slopes for most types of hearing loss in order to ensure optimal fitting between the frequency channels automatic feedback manager senso p38 has a built-in ...