@inproceedings{BarneyJackson_ASA08,
        AUTHOR  =       "Barney, A. and Jackson, P. J. B.",
        TITLE   =       "Analysis of frication noise modulation from a physical model",
        BOOKTITLE =	"J.~Acoust.\ Soc.\ Am.",
        VOLUME  =       "123",
        NUMBER  =       "5, Pt.\,2",
        PAGES   =       "3578",
        NOTE	=	"{Presented at Acoustics'08}", 
	ADDRESS =	"Paris",
	MONTH   =       "July",
        YEAR    =       "2008",
        CITE    =       "Barney and Jackson (2008)",
	ABSTRACT =	
"A physical model, built to investigate the aeroacoustic properties of 
voiced fricative speech, was used to study the amplitude modulation of the 
turbulence noise it generated.  The amplitude and fundamental frequency of 
glottal vibration, relative positions of the constriction and obstacle, and 
the flow rate were varied.  Measurements were made from pressure taps in 
the duct wall and the sound pressure at the open end.  The high-pass 
filtered sound pressure was analyzed in terms of the magnitude and phase of 
the turbulence noise envelope.  The magnitude and phase of the observed 
modulation was related to the upstream pressure.  The effects of moving the 
obstacle with respect to the constriction are reported (representative of 
the teeth and the tongue in a sibilant fricative respectively).  These 
results contribute to the development of a parametric model of the 
aeroacoustic interaction of voicing with turbulence noise generation in 
speech."
}