Measuring Threshold and LDL in dB SPL

 


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Table of Contents

Measuring Threshold and LDL in dB SPL

Real-Ear LDL Measures

Example of Data Entry into Patient’s Chart

LDL Measures Categorical Loudness Scale

Real-Ear Loudness Measures

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You’ve Just Measured the REDD Real Ear To Dial Difference

RESR90 Using Previously Measured LDLs

Why Measure Individual LDL When Many Suggest You Can Predict LDL from Threshold (Pascoe, 1988)

ANSI S3.3-1996 Convert dB HL to SPL near Average TM

Why Measure LDL? Case Study

Case Study: LGOB Left Ear

Case Study: LGOB Right Ear

Intersubject Variability of SPL measured near TM with TDH-39 Earphones (Valente et al, 1994)

Intersubject Variability of SPL near TM with Insert Earphone (Valente et al, 1994)

Predicted versus Measured Threshold and LDL with Audioscan “SpeechMap” in Subject #1 (Valente et al, 1994)

Predicted versus Measured Threshold and LDL with AudioScan “SpeechMap”in Subject #2 (Valente et al, 1994)

Thresholds and LDL for “Loud” for Subject #1

Thresholds for AD and AS and LDL for “Loud” on LGOB (Subject #8)

Intersubject Variability of LDL @ 500 Hz

Intersubject Variability of LDL @ 1000 Hz

Intersubject Variability of LDL @ 2000 Hz

Intersubject Variability of LDL @ 4000 Hz

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Author: Michael Valente and Kristina Frye

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