ABR/ASSR dBnHL → dBeHL Corrections

Enter uncorrected thresholds in dBnHL. The page applies age-based correction factors to generate estimated dBeHL. No data is stored.

Patient details

Date of birth

Gestational age at birth (weeks)

Test date

Important: ASSR uses subtract: dBeHL = dBnHL − correction factor. ABR uses add: dBeHL = dBnHL + correction factor.

ASSR — NB CE-Chirp

ASSR correction values referenced from Interacoustics Eclipse Correction Tables v2.1. Values are selected using the entered dBnHL rounded to the nearest 5 dB step.

Insert earphones

Uncorrected dBnHL

Corrected dBeHL

Bone conductor

Uncorrected dBnHL

Corrected dBeHL

Headphones

Uncorrected dBnHL

Corrected dBeHL

ABR — Inserts

ABR correction factors are added to dBnHL. Supra-aural rows are ignored. BC click supplementary interpolation table is ignored; BC click ≤12 weeks uses correction factor 0.

Air conduction — Tone pip / Click

Uncorrected dBnHL

Corrected dBeHL

Air conduction — Chirp

Uncorrected dBnHL

Corrected dBeHL

Bone conduction — Tone pip / Click

Uncorrected dBnHL

Corrected dBeHL

Bone conduction — Chirp

Uncorrected dBnHL

Corrected dBeHL

Acronyms & definitions

ABR — Auditory Brainstem Response
ASSR — Auditory Steady-State Response
dBnHL — dB normal hearing level
dBeHL — dB estimated hearing level
GA — Gestational age
Corrected age — Chronological age minus prematurity, where prematurity = 40 weeks − GA
NB CE-Chirp — Narrow-band CE-Chirp stimulus