THE AUDITORY MODELING TOOLBOX
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bramslow2004_exc0dbspl
Excitation patterns at an SPL of 0 dB in free field (to calibrate model)
Usage:
E_0 = bramslow2004_exc0dbspl(In_FrmSize, In_SampF, TransFact, Widen, AGLoss, RET4153, AGFs_E, NoChan, E_Beg, E_End, E_B)
Input parameters:
| In_FrmSize | Input framesize (in samples). |
| In_SampF | Input sampling rate (in Hz). |
| TransFact | Specifies the fixed frequency response equalization applied to the input spectrum (after correcting for coupler response) before passing it through the auditory filterbank. The parameter choices are:
|
| Widen | Flag for filter widening dependent on level. If true, the filter will be widened. |
| AGLoss | Audiogram (in dB HL) Specified at frequencies [125 250 500 750 1000 1500 2000 3000 4000 6000 8000 10000 12500] Hz. |
| RET4153 | ISO 389 thresholds (in dB) as measured on the ear-simulator (4153) coupler. Specified at the same frequencies as for AGLoss. |
| AGFs_E | Audiogram frequencies (in Cams, on the ERB scale). |
| NoChan | Number of output channels (equally distributed on the ERB scale). |
| E_Beg | Lowest ERB rate considered (in Cams, typically 3 Cams). |
| E_End | Highest ERB rate considered (in Cams, typically 32 Cams). |
| E_B | ERB rates (in Cams) of the individual bins in the frame. |
Output parameters:
| E_0 | Power of the excitation in ERB bands for 0 dB SPL, with potentially widened filter. |
Description:
See also other parameters as in arg_bramslow2004.
References:
L. Bramsløw Nielsen. An Auditory Model with Hearing Loss. Technical report, Eriksholm Research Centre, Snekkersten, 1993. [ .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 ]
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