THE AUDITORY MODELING TOOLBOX

Applies to version: 1.4.0

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SIG_HOFMAN1998 - - Stimuli from Hofman and Opstal (1998)

Usage:

sig = sig_hofman1998(nprime,f0,Obj,azi,dur,condition)

Input parameters:

nprime Highest altered harmonic. Default is 0.
f0 Fundamental frequency. Default is 125 Hz.
Obj HRTFs as SOFA object.
azi Azimuth. Default is -37 deg.
dur Duration in seconds. Default is 0.1 s.
fs Sampling rate in Hz. Default is 48 kHz.

Output parameters:

sig signal wave form

Description:

sig_hofman1998 generates three types of stimuli having different spectro-temporal characteristics but identical long-term power spectra: noise bursts, frequency-modulated tones, and trains of short noise bursts.

The additional optional parameter condition flag may be one of:

'ILD' ILDs up to nprime set to zero. This is the default.
'ISLD' ISLDs (interaural spectral level differeces) maintained while flattening right-ear HRTF up to nprime.

References:

P. M. Hofman and A. J. Van Opstal. Spectro-temporal factors in two-dimensional human sound localization. J. Acoust. Soc. Am., 103(2634), 1998. [ http ]