Subject: Re: AUDITORY Digest - 28 Aug 2006 (#2006-194) From: Rodolfo Venegas <rodolfo.venegas@xxxxxxxx> Date: Wed, 30 Aug 2006 03:33:06 -0400------=_Part_26197_9075137.1156923186395 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Dear Xinhui In the Master Thesis of my dear friends Matias Za=F1artu you can found good information. The thesis is entitled: INFLUENCE OF ACOUSTIC LOADING ON THE FLOW-INDUCED OSCILLATIONS OF SINGLE MASS MODELS OF THE HUMAN LARYNX and is avalaible in the following page http://web.ics.purdue.edu/~mzanartu/<http://web.ics.purdue.edu/%7Emzanartu/= > Other document is: B. H. Story, Physiologically-Based Speech Simulation using an Enhanced Wave-Reflection Model of the Vocal Tract, Ph.D. Dissertation, University of Iowa, 1995. In the following paper you can found a set of 18 vocal tract shapes (3-D) for one male subject (The 3-D images were acquired using magnetic resonance imaging). B. H. Story, I. R. Titze and E. A. Hoffman, "Vocal tract are functions from magnetic resonance imaging," J. Acoust. Soc Am., vol. 100(1), pp. 537-554, Jul. 1996. Best Regards Rodolfo Venegas C. On 8/29/06, Jont Allen <jontalle@xxxxxxxx> wrote: > > Xinhui > Look at Beranek's book on Acoustics for info on this problem. I think I > saw something in there the other day when I was scaning it, about angles > in tubes, and the effects. > > Jont Allen > > AUDITORY automatic digest system wrote: > > There are 2 messages totalling 185 lines in this issue. > > > > Topics of the day: > > > > 1. AUDITORY Digest - 18 Aug 2006 to 23 Aug 2006 (#2006-188) > > 2. Perceptual Weighting filter in AMR-WB (or AMR-WB+) > > > > ---------------------------------------------------------------------- > > > > Date: Mon, 28 Aug 2006 05:43:11 -0700 > > From: Abeer Alwan <abeera@xxxxxxxx> > > Subject: Re: AUDITORY Digest - 18 Aug 2006 to 23 Aug 2006 (#2006-188) > > > > Mohan Sondhi 1986 JASA article (Apr. 79(4):1113-6) addresses > > this issue. It shows that for typical vocal tract dimensions, the > > bent causes a shift in resonant frequencies below 4 kHz in the > > range of 2-8%. > > > > Regards, > > Abeer > > > >> 1. A question on area function of vocal tract (2) > >> > >> ---------------------------------------------------------------------- > >> > >> Date: Wed, 23 Aug 2006 13:18:25 -0400 > >> From: xinhui zhou <zxinhui@xxxxxxxx> > >> Subject: A question on area function of vocal tract > >> > >> Dear List, > >> > >> I am having a question about area function of vocal tract, > >> > >> Area function is used to describe the vocal tract shape. It is > >> assumed that the bent shape of vocal tract can be regarded as a > >> straight tube with varying area along the axis,and only planar wave > >> propagation exists with limitation to certain frequency range. > >> > >> I only undertand it intuitively . Is there any book or paper which > >> formuates the idea of area function , i.e. why a bent 3D shape can be > >> simplied as a tube with area function? > >> > >> Thanks in adavance, > >> > >> Xinhui > >> > >> ------------------------------ > >> > > > > ------------------------------ > > > > Date: Mon, 28 Aug 2006 22:03:12 +0800 > > From: #ARIJIT BISWAS# <arijit17@xxxxxxxx> > > Subject: Perceptual Weighting filter in AMR-WB (or AMR-WB+) > > > > This is a multi-part message in MIME format. > > > > ------_=3D_NextPart_001_01C6CAAB.2D7E595E > > Content-Type: text/plain; > > charset=3D"iso-8859-1" > > Content-Transfer-Encoding: quoted-printable > > > > Dear Members of the List: > > > > =3D20 > > > > I have a question regarding the "perceptual weighting filter" used in = =3D > > the AMR-WB (also in the AMR-WB+) codec that is standardized in 3GPP and > =3D > > ITU.=3D20 > > > > =3D20 > > > > Please check the 2002 Journal article from the developers of AMR-WB, = =3D > > where they present the perceptual filter (pages 8-10, and Figures 3 and > =3D > > 4). > > > > > http://www.gel.usherbrooke.ca/audio/docs/IEEE2002_Bessette.pdf#search=3D3= D%=3D > > 22perceptual%20weighting%20filter%20AMR%20WB%22=3D20 > > > > =3D20 > > > > Is this the best that one can achieve?=3D20 > > > > I would like to know if there are any recent research efforts made to = =3D > > improve this perceptual weighting filter to improve the quality of =3D > > wideband speech. If so, any pointers in that direction will be highly = =3D > > appreciated. > > > > =3D20 > > > > Thanks in advance. > > > > =3D20 > > > > Best Regards, > > > > ~Arijit > > > > ------_=3D_NextPart_001_01C6CAAB.2D7E595E > > Content-Type: text/html; > > charset=3D"iso-8859-1" > > Content-Transfer-Encoding: quoted-printable > > > ------=_Part_26197_9075137.1156923186395 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Dear Xinhui<br><br>In the Master Thesis of my dear friends Matias Za=F1artu= you can found good information.<br><br>The thesis is entitled:<br><br>INFL= UENCE OF ACOUSTIC LOADING ON THE FLOW-INDUCED OSCILLATIONS OF SINGLE MASS M= ODELS OF THE HUMAN LARYNX <br><br>and is avalaible in the following page<br><a href=3D"http://web.ics= .purdue.edu/%7Emzanartu/">http://web.ics.purdue.edu/~mzanartu/</a><br><br>O= ther document is:<br><br>B. H. Story, Physiologically-Based Speech Simulati= on using an Enhanced Wave-Reflection Model of the Vocal Tract,=20 Ph.D. Dissertation, University of Iowa, 1995.<br><br>In the following paper= you can found a set of 18 vocal tract shapes (3-D) for one male subject (T= he 3-D images were acquired using magnetic resonance imaging).<br><br>B. H.= Story, I. R. Titze and E. A. Hoffman, "Vocal tract are functions from magn= etic resonance imaging," J. Acoust. Soc Am., vol. 100(1), pp. 537-554= , Jul. 1996. <br><br>Best Regards<br><br>Rodolfo Venegas C.<br><br><br><br><br><br><div>= <span class=3D"gmail_quote">On 8/29/06, <b class=3D"gmail_sendername">Jont = Allen</b> <<a href=3D"mailto:jontalle@xxxxxxxx">jontalle@xxxxxxxx</a>>= ; wrote: </span><blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rg= b(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Xinhui<br>= Look at Beranek's book on Acoustics for info on this problem. I think I<br> saw something in there the other day when I was scaning it, about angles<br= >in tubes, and the effects.<br><br>Jont Allen<br><br>AUDITORY automatic dig= est system wrote:<br>> There are 2 messages totalling 185 lines in this = issue. <br>><br>> Topics of the day:<br>><br>> 1. AUDITORY= Digest - 18 Aug 2006 to 23 Aug 2006 (#2006-188)<br>> 2. Per= ceptual Weighting filter in AMR-WB (or AMR-WB+)<br>><br>> -----------= ----------------------------------------------------------- <br>><br>> Date: Mon, 28 Aug 2006 05:43:11 -07= 00<br>> From: Abeer Alwan <<a href=3D"mailto:a= beera@xxxxxxxx">abeera@xxxxxxxx</a>><br>> Subject: Re: AUDI= TORY Digest - 18 Aug 2006 to 23 Aug 2006 (#2006-188) <br>><br>> Mohan Sondhi 1986 JASA article (Apr. 79(4):1113-6) address= es<br>> this issue. It shows that for typical vocal tract dimensions, th= e<br>> bent causes a shift in resonant frequencies below 4 kHz in the <br>> range of 2-8%.<br>><br>> Regards,<br>> Abeer<br>><br>&= gt;> 1. A question on area function of vocal tract (2)<br>&g= t;><br>>> --------------------------------------------------------= -------------- <br>>><br>>> Date: Wed, 23 Aug 2006 13:1= 8:25 -0400<br>>> From: xinhui zhou <<a href= =3D"mailto:zxinhui@xxxxxxxx">zxinhui@xxxxxxxx</a>><br>>> S= ubject: A question on area function of vocal tract <br>>><br>>> Dear List,<br>>><br>>> I a= m having a question about area function of vocal tract,<br>>><br>>= > Area function is used to describe the vocal tract shape. I= t is<br>>> assumed that the bent shape of vocal tract can be regarded= as a <br>>> straight tube with varying area along the axis,and only planar= wave<br>>> propagation exists with limitation to certain frequency r= ange.<br>>><br>>> I only undertand it intuitively .&= nbsp; Is there any book or paper which <br>>> formuates the idea of area function , i.e. why a bent 3D shape= can be<br>>> simplied as a tube with area function?<br>>><br>&= gt;> Thanks in adavance,<br>>><br>>> Xinhui<br>&g= t;> <br>>> ------------------------------<br>>><br>><br>> ---= ---------------------------<br>><br>> Date: Mo= n, 28 Aug 2006 22:03:12 +0800<br>> From: #ARIJIT = BISWAS# <<a href=3D"mailto:arijit17@xxxxxxxx"> arijit17@xxxxxxxx</a>><br>> Subject: Perceptual Weighting fil= ter in AMR-WB (or AMR-WB+)<br>><br>> This is a multi-part message in = MIME format.<br>><br>> ------_=3D_NextPart_001_01C6CAAB.2D7E595E<br> > Content-Type: text/plain;<br>> = charset=3D"iso-8859-1"<br>> Content-Transfer-Encoding: quoted-= printable<br>><br>> Dear Members of the List:<br>><br>> =3D20<b= r>><br>> I have a question regarding the "perceptual weighting f= ilter" used in =3D <br>> the AMR-WB (also in the AMR-WB+) codec that is standardized in 3GP= P and =3D<br>> ITU.=3D20<br>><br>> =3D20<br>><br>> Please ch= eck the 2002 Journal article from the developers of AMR-WB, =3D<br>> whe= re they present the perceptual filter (pages 8-10, and Figures 3 and =3D <br>> 4).<br>><br>> <a href=3D"http://www.gel.usherbrooke.ca/audio= /docs/IEEE2002_Bessette.pdf#search=3D3D%=3D">http://www.gel.usherbrooke.ca/= audio/docs/IEEE2002_Bessette.pdf#search=3D3D%=3D</a><br>> 22perceptual%2= 0weighting%20filter%20AMR%20WB%22=3D20 <br>><br>> =3D20<br>><br>> Is this the best that one can achiev= e?=3D20<br>><br>> I would like to know if there are any recent resear= ch efforts made to =3D<br>> improve this perceptual weighting filter to = improve the quality of =3D <br>> wideband speech. If so, any pointers in that direction will be hig= hly =3D<br>> appreciated.<br>><br>> =3D20<br>><br>> Thanks i= n advance.<br>><br>> =3D20<br>><br>> Best Regards,<br>><br>&= gt; ~Arijit <br>><br>> ------_=3D_NextPart_001_01C6CAAB.2D7E595E<br>> Content-= Type: text/html;<br>> charset=3D&quo= t;iso-8859-1"<br>> Content-Transfer-Encoding: quoted-printable<br>&= gt;<br></blockquote></div><br> ------=_Part_26197_9075137.1156923186395--