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. The Journal of the Acoustical Society of America, 103(2634), 1998. [ http ]