Hearing Enhancement |
From inside the book
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Page 41
... Frequency response curve of a hearing instrument . Lines drawn through and averaging the slope of the curve on either side of the 1000 cps line provide an approximate description of the response curve . Curve A has a slope of 3 db per ...
... Frequency response curve of a hearing instrument . Lines drawn through and averaging the slope of the curve on either side of the 1000 cps line provide an approximate description of the response curve . Curve A has a slope of 3 db per ...
Page 148
... frequency end . Solid curve shows minimum BAP without losing low frequencies . operated is above threshold at the lowest usable frequency and below MTP at the highest usable frequency . The frequency response curve of the instrument ...
... frequency end . Solid curve shows minimum BAP without losing low frequencies . operated is above threshold at the lowest usable frequency and below MTP at the highest usable frequency . The frequency response curve of the instrument ...
Page 155
... FREQUENCY 2000 4000 8000 10 40 30 O 100 90 80 LOSS IN DECIBELS HEARING Figure 22.8 . Typical frequency response curve of an available instrument and the threshold audiogram ( MAP ) for which it should be most suitable according to ...
... FREQUENCY 2000 4000 8000 10 40 30 O 100 90 80 LOSS IN DECIBELS HEARING Figure 22.8 . Typical frequency response curve of an available instrument and the threshold audiogram ( MAP ) for which it should be most suitable according to ...
Common terms and phrases
abnormal acoustic actual alternating amount amplifier assumed audible audible pressure audiometer becomes cause Chapter chart circuit considered contain correction creates curve decibels defective deliver depends describe desired determined direct dispenser distortion ear canal effects electrical endings enhancement exists Figure flow free field frequency response gain given hearing instrument hearing loss important increase indicate individual kind less limiting loudness maximum tolerable pressure means measured mechanism natural nerve normal normal ear observed obtained occurs octave operate output particular pass possible practical present pressure changes pressure limitation pressure wave produce proper properties pure tone range reason receiver reference relative represent residual hearing result sensitivity shown shows single sound cycles sound pressure sound pressure cycle specified speech sounds supplied Table threshold usable usually values variation varies