Real-Ear LDL Measures
500, 1000, 2000, 3000 and 4000 Hz using a continuous tone.
Probe tube placed ~ 4-6 mm from TM (Mark @ 30 mm from the tip for adults).
Use Categorical Loudness Scaling; LDL target is “Loud, but O.K.”
Ascending procedure in 5 dB steps
Obtain thresholds in dB HL (dial) and dB SPL (Frye monitor) (REDD) and place SPL thresholds in the patient’s chart for when measuring the RESR90