open_nl: Open-NL WDRC Gain Prescription
In SII: Calculate ANSI/ASA S3.5-1997 (R2024) Speech Intelligibility Index

open_nl

R Documentation

Open-NL WDRC Gain Prescription

Description

Calculates experimental prescriptive insertion gain and SSPL90 targets for a given hearing loss, based on a rule-based WDRC heuristic.

Usage

open_nl(
  speech = 65,
  threshold,
  freq,
  ...,
  gender = "male",
  experience = "experienced",
  config = "bilateral",
  coupling = "custom_occluded",
  module = "standard",
  ldl = NULL,
  loss = NULL,
  distortion_category = NULL,
  user_cr = NULL,
  optimize = TRUE,
  seed_noise = NULL,
  optim_method = "Nelder-Mead",
  abg_fraction = 0.75,
  enable_severe_booster = FALSE,
  booster_onset = 70,
  disable_sdlfp = FALSE
)

## S3 method for class 'prescription_target'
print(x, ...)

## S3 method for class 'prescription_target'
summary(object, ...)

## S3 method for class 'prescription_target'
plot(x, ...)

Arguments

`speech`	Input speech spectrum level at each frequency. If a single number is provided, it's assumed to be the overall broadband SPL.
`threshold`	Hearing threshold level at each frequency.
`freq`	Frequencies at which the thresholds are measured.
`gender`	Gender of the patient ("male", "female").
`experience`	Hearing aid experience ("new", "experienced").
`config`	Fitting configuration ("unilateral", "bilateral").
`coupling`	Acoustic coupling ("custom_occluded", "open_dome", "tulip_dome", "double_dome", "vent_1mm_solid", etc.).
`module`	Fitting module ("standard", "cin").
`ldl`	Loudness Discomfort Levels (optional).
`loss`	Conductive hearing loss component (optional).
`distortion_category`	Distortion category ("Normal", "Low", "Moderate", "High").
`user_cr`	User defined compression ratio (optional).
`optimize`	Optimization flag.
`seed_noise`	Random noise for optimizer seeding.
`optim_method`	Optimization method.
`abg_fraction`	Air-bone gap fraction to compensate.
`enable_severe_booster`	Logical flag to enable severe-loss booster.
`booster_onset`	Threshold for the severe-loss booster (default: 70).
`disable_sdlfp`	Logical flag to disable the Slope-Dependent Low-Frequency Penalty (SD-LFP).
`x`	A `prescription_target` object.
`object`	A `prescription_target` object.
`...`	Additional graphical or printing parameters.