THE AUDITORY MODELING TOOLBOX

Applies to version: 1.6.0

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bramslow2004_equloudn
Correct the power spectrum for equal loudness contours

Usage:

PowSpect = bramslow2004_equloudn(PowSpect, TransFact, In_FrmSize, In_SampF)

Input parameters:

PowSpect Row vector with the power spectrum. Size: In_FrmSize/2.
TransFact

Specifies the fixed frequency response equalization applied to the input spectrum (after correcting for coupler response) before passing it through the auditory filterbank. It can be one of the following:

  • 'ZWICKA0': a0 transmission factor as described by Zwicker & Fastl (1999).
  • 'ISO100N': 100-phone equal-loudness contours from ISO 226, see also Glasberg and Moore (1990).
  • 'ISO100M': As 'ISO100N' but flat below 1 kHz, see also Glasberg and Moore (1990).
In_FrmSize Frame size of the original time frame.
In_SampF Input sampling rate (in Hz).

Output parameters:

PowSpect Row vector with the corrected power spectrum. Size: In_FrmSize/2.

References:

L. Bramsløw Nielsen. An Auditory Model with Hearing Loss. Technical report, Eriksholm Research Centre, Snekkersten, 1993. [ .pdf ]

G. Naylor. The AUDMOD auditory model: A critique and revisions. Technical report, Eriksholm Research Centre, Snekkersten, 1994. [ .pdf ]

L. Bramsløw. An objective estimate of the perceived quality of reproduced sound in normal and impaired hearing. Acta Acustica united with Acustica, 90(6):1007--1018, 2004. [ http ]

L. Bramsløw. An auditory loudness model with hearing loss. In Baltic-Nordic Acoustics Meeting, pages 318--323, 2024. [ .html ]

B. R. Glasberg and B. Moore. Derivation of auditory filter shapes from notched-noise data. Hearing Research, 47(1-2):103--138, 1990.

E. Zwicker and H. Fastl. Psychoacoustics: Facts and models, volume 254. Springer Berlin, 1999.

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