calculate_loudness_cpp: Calculate Canonical Loudness (Native C++ Engine)

In SII: Calculate ANSI/ASA S3.5-1997 (R2024) Speech Intelligibility Index

Calculate Canonical Loudness (Native C++ Engine)

Description

Native C++ port of the bramslow2004 canonical engine, corrected per AMToolbox 1.6.0 reference with noted simplifications.

Usage

calculate_loudness_cpp(
  inputF,
  inputLdB,
  HLcf,
  HLohcdB0,
  HLihcdB0,
  NoChan = 30L,
  E_Beg = 3,
  E_End = 32,
  Binaural = 0L
)

Arguments

inputF	Vector of input frequencies (Hz)
inputLdB	Vector of input spectrum levels (dB/Hz, free field)
HLcf	Audiogram frequencies (Hz)
HLohcdB0	OHC loss at audiogram frequencies (dB)
HLihcdB0	IHC loss at audiogram frequencies (dB)
NoChan	Number of ERB channels (default 30)
E_Beg	Lowest ERB rate (default 3.0)
E_End	Highest ERB rate (default 32.0)
Binaural	Integer indicating whether to compute binaural loudness (default 0L)

Value

A list containing Loudness (sones), Excitation, Cams, and CFs.

SII documentation built on Sept. 12, 2026, 5:08 p.m.