Re: The height of the dummy head for MIT HRTF database (Junfeng Li )


Subject: Re: The height of the dummy head for MIT HRTF database
From:    Junfeng Li  <junfeng@xxxxxxxx>
Date:    Tue, 15 Nov 2011 21:12:25 +0800
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

This is a multi-part message in MIME format. ----3695d942633d5392748d Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Thanks a lot for the information from all of you=2E = I got the situation well=2E = Thanks a lot again=2E Best regards=2C Junfeng = On 11/15/11=2C =22Jelfs=2C Sam=22 =3Csam=2Ejelfs=40PHILIPS=2ECOM=3E wro= te=3A =3E = =3E Junfeng=2C =3E = =3E The measurements were made in an Anechoic chamber=2C and as such the= height from floor-to-ear should be insignificant as there should be ver= y little in the way of floor reflection=2E The authors do note that refl= ections from apparatus exist=2C but not explicitly whether they are pres= ent in the 512-point HRIR=2E =3E = =3E From =27hrtfdoc=2Etxt=27 as supplied with the database=3A =3E = =3E =22The head response persists for several hundred =3E samples (subject to interpretation) and is followed by various =3E reflections off objects in the anechoic chamber (such as the KEMAR =3E turntable)=2E=A0 In order to reduce the size of the data set without= =3E eliminating anything of potential interest=2C we decided to discard = the =3E first 200 samples of each impulse response and save the next 512 =3E samples=2E=A0 Each HRTF response is thus 512 samples long=2E=A0 Most= =3E researchers will no doubt truncate this data further=2E=22 =3E = =3E Kind Regards =3E = =3E Sam Jelfs =3E = =3E = =3E = =3E = =3E -----Original Message----- =3E From=3A AUDITORY - Research in Auditory Perception =5Bmailto=3AAUDIT= ORY=40LISTS=2EMCGILL=2ECA=5D =3CAUDITORY=40LISTS=2EMCGILL=2ECA=5D=3E On = Behalf Of Junfeng Li =3E Sent=3A Monday 14 November 2011 16=3A25 =3E To=3A AUDITORY=40LISTS=2EMCGILL=2ECA =3E Subject=3A =5BAUDITORY=5D The height of the dummy head for MIT HRTF = database =3E = =3E Dear all=2C =3E = =3E Could anyone know the height (i=2Ee=2E=2C the distance between the e= ntrance of ear of dummy head and the floor of the measurement room) of t= he dummy head during measuring MIT HRTF database=3F Since in the spcific= ation of the database=2C only the distance (1=2E4m) between the loudspea= ker and the center of dummy head is provided=2E =3E = =3E Thanks a lot in advance! =3E = =3E Best Regards=2C =3E Junfeng Li =3E = =3E =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F =3E The information contained in this message may be confidential and le= gally protected under applicable law=2E The message is intended solely f= or the addressee(s)=2E If you are not the intended recipient=2C you are = hereby notified that any use=2C forwarding=2C dissemination=2C or reprod= uction of this message is strictly prohibited and may be unlawful=2E If = you are not the intended recipient=2C please contact the sender by retur= n e-mail and destroy all copies of the original message=2E =3E ----3695d942633d5392748d Content-Type: text/html; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable =3Cdiv style=3D=22font-family=3A =27Times New Roman=27=3B font-size=3A 1= 6px=3B=22=3EThanks a lot for the information from all of you=2E =3Cbr =5F= moz=5Fdirty=3D=22=22 /=3EI got the situation well=2E =3Cbr =5Fmoz=5Fdirt= y=3D=22=22 /=3E=3Cbr =5Fmoz=5Fdirty=3D=22=22 /=3EThanks a lot again=2E=3C= br =5Fmoz=5Fdirty=3D=22=22 /=3E=3Cbr =5Fmoz=5Fdirty=3D=22=22 /=3EBest re= gards=2C=3Cbr =5Fmoz=5Fdirty=3D=22=22 /=3EJunfeng =3Cbr =5Fmoz=5Fdirty=3D= =22=22 /=3E=3Cbr /=3E=3Cbr /=3E=3Cspan=3EOn 11/15/11=2C =3Cb class=3D=22= name=22=3E=26quot=3BJelfs=2C Sam=26quot=3B =3C/b=3E =26lt=3Bsam=2Ejelfs=40= PHILIPS=2ECOM=26gt=3B wrote=3A=3C/span=3E=3Cblockquote cite=3D=22mid=3A = =26lt=3B16532=5F1321352213=5F4EC23C15=5F16532=5F402=5F1=5F2457CAAB54A054= 40B0CE80D0D831099E7398=40011-DB3MPN1-043=2EMGDPHG=2Eemi=2Ephilips=2Ecom=22= class=3D=22iwcQuote=22 style=3D=22border-left=3A 1px solid rgb(0=2C 0=2C= 255)=3B padding-left=3A 13px=3B margin-left=3A 0pt=3B=22 type=3D=22cite= =22=3E=3Cdiv class=3D=22mimepart text plain=22=3EJunfeng=2C=3Cbr /=3E=3C= br /=3EThe measurements were made in an Anechoic chamber=2C and as such = the height from floor-to-ear should be insignificant as there should be = very little in the way of floor reflection=2E The authors do note that r= eflections from apparatus exist=2C but not explicitly whether they are p= resent in the 512-point HRIR=2E=3Cbr /=3E=3Cbr /=3EFrom =27hrtfdoc=2Etxt= =27 as supplied with the database=3A=3Cbr /=3E=3Cbr /=3E=26quot=3BThe he= ad response persists for several hundred=3Cbr /=3Esamples (subject to in= terpretation) and is followed by various=3Cbr /=3Ereflections off object= s in the anechoic chamber (such as the KEMAR=3Cbr /=3Eturntable)=2E=A0 I= n order to reduce the size of the data set without=3Cbr /=3Eeliminating = anything of potential interest=2C we decided to discard the=3Cbr /=3Efir= st 200 samples of each impulse response and save the next 512=3Cbr /=3Es= amples=2E=A0 Each HRTF response is thus 512 samples long=2E=A0 Most=3Cbr= /=3Eresearchers will no doubt truncate this data further=2E=26quot=3B=3C= br /=3E=3Cbr /=3EKind Regards=3Cbr /=3E=3Cbr /=3ESam Jelfs=3Cbr /=3E=3Cb= r /=3E=3Cbr /=3E=3Cbr /=3E=3Cbr /=3E-----Original Message-----=3Cbr /=3E= From=3A AUDITORY - Research in Auditory Perception =5Bmailto=3AAUDITORY=40= LISTS=2EMCGILL=2ECA=5D =26lt=3BAUDITORY=40LISTS=2EMCGILL=2ECA=5D=26gt=3B= On Behalf Of Junfeng Li=3Cbr /=3ESent=3A Monday 14 November 2011 16=3A2= 5=3Cbr /=3ETo=3A AUDITORY=40LISTS=2EMCGILL=2ECA=3Cbr /=3ESubject=3A =5BA= UDITORY=5D The height of the dummy head for MIT HRTF database=3Cbr /=3E=3C= br /=3EDear all=2C=3Cbr /=3E=3Cbr /=3ECould anyone know the height (i=2E= e=2E=2C the distance between the entrance of ear of dummy head and the f= loor of the measurement room) of the dummy head during measuring MIT HRT= F database=3F Since in the spcification of the database=2C only the dist= ance (1=2E4m) between the loudspeaker and the center of dummy head is pr= ovided=2E=3Cbr /=3E=3Cbr /=3EThanks a lot in advance!=3Cbr /=3E=3Cbr /=3E= Best Regards=2C=3Cbr /=3EJunfeng Li=3Cbr /=3E=3Cbr /=3E=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=3Cbr /=3EThe information contained in this message may be confide= ntial and legally protected under applicable law=2E The message is inten= ded solely for the addressee(s)=2E If you are not the intended recipient= =2C you are hereby notified that any use=2C forwarding=2C dissemination=2C= or reproduction of this message is strictly prohibited and may be unlaw= ful=2E If you are not the intended recipient=2C please contact the sende= r by return e-mail and destroy all copies of the original message=2E=3Cb= r /=3E=3C/div=3E=3C/blockquote=3E=3C/div=3E ----3695d942633d5392748d--


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