Subject: Re: Book needed: Ranke 1931 From: "Richard F. Lyon" <dicklyon@xxxxxxxx> Date: Sat, 16 Aug 2014 16:57:08 -0700 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--089e011825d03df68f0500c7e54e Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Thanks to our auditory-list friends in Montreal, we now have a good scanned and OCR'd copy of Ranke's 1931 book. It definitely has a well-developed 2D model of cochlear waves. It even addresses the question of how important membrane mass is, a topic that has come up many times since. Here's what the OCR does with that section (after 2 or 3 minor OCR corrections): Einflu=C3=9F der Membranmasse. Bei der Entwicklung der Potentialstr=C3=B6mung wurde die Masse der Membran = und ihrer Auflagerungen bisher vernachl=C3=A4ssigt. Fast alle Untersucher gehen= aber gerade von der Masse der Membran aus, oder halten wenigstens ihren Einflu= =C3=9F auf die Schwingungen in der Cochlea fu=CC=88r so wesentlich, da=C3=9F er ni= cht vernachl=C3=A4ssigt werden darf. So mu=C3=9F ich ausdru=CC=88cklich nachwei= sen, da=C3=9F die Vernachl=C3=A4ssigung der Membranmasse fu=CC=88r alle die F=C3=A4lle erlaub= t ist, die bei den Schwingungen in der Cochlea von Wichtigkeit sind. Freilich ist fu=CC=88= r eine genauere Betrachtung auch die Masse der Membran nicht zu u=CC=88berseh= en. Vorl=C3=A4ufig handelt es sich jedoch um grobe Ann=C3=A4herungen. Es ist da= her gegenu=CC=88ber den bisherigen Untersuchern nur der Beweis zu erbringen, da= =C3=9F in erster Ann=C3=A4herung der Vernachl=C3=A4ssigung der Membranmasse eine geri= ngere Bedeutung beizumessen ist als der besonders von Koch benutzten Vernachl=C3=A4ssigung der Masse der mitbewegten Flu=CC=88ssigkeit. Fu=CC=88r den Fall einer Potentialstr=C3=B6mung in engen Kan=C3=A4len, fu= =CC=88r den die Potentialstr=C3=B6mung oben entwickelt wurde, l=C3=A4=C3=9Ft sich die Masse= der Membran nicht sehr einfach einfu=CC=88hren, wenn man nicht grobe Vereinfachungen in= Kauf nehmen will. Doch gewinnt man auch aus der Betrachtung einfacher F=C3=A4lle= , die sich streng durchfu=CC=88hren lassen, ein Urteil, wann die Masse der Membra= n nicht mehr vernachl=C3=A4ssigt werden darf. Wir wollen uns daher auf den einfachsten Fall beschr=C3=A4nken, der mathematisch am leichtesten durchzufu=CC=88hren ist. and Google Translate: Influence of the membrane mass. In developing the potential flow, the mass of the diaphragm and its deposits has been neglected. But almost all investigators go straight from the mass of the diaphragm from, or at least keep their influence on the vibrations in the cochlea so essential that it should not be neglected. So I have to explicitly demonstrate that the neglect of the membrane mass for all the cases is allowed, which are at the vibrations in the cochlea of =E2=80=8B=E2=80=8Bimportance. Certainly not to be overlooked for a closer l= ook at the mass of the membrane. Being there is, however, only rough approximations. It is therefore to provide over previous investigators only the proof that in a first approximation, the neglect of the membrane mass of less importance should be attached as the most used cooking neglect the mass of the entrained liquid. In the case of a potential flow in narrow channels, for which the potential flow has been developed above, the mass of the membrane can be introduced not very easy when you do not want to take gross simplifications in purchasing. But you also gain from consideration of simple cases that can be strictly carry out a judgment, when the mass of the diaphragm can no longer be neglected. We will therefore restrict ourselves to the simplest case, which is mathematically perform the easiest. I can't republish it, but I'm happy to share it for fair-use research purposes, especially with anyone who will help translate parts of it. With the decent OCR by Abbyy, we get a good start with Google Translate, but it will be a lot of work to make sense of pages full of equations and such. It's only 85 pages total. Dick On Sun, Jun 22, 2014 at 9:49 PM, Richard F. Lyon <dicklyon@xxxxxxxx> wrote: > This seems to be where the 2D cochlear wave model first came up, > but I can't locate a copy with 2000 miles, though WorldCat shows a > few around, includes 2 in North America: > > http://www.worldcat.org/title/gleichrichter-resonanztheorie-eine-erweiter= ung-der-helmholtzschen-resonanztheorie-des-gehors-durch-physikalische-unter= suchung-der-flussigkeitsschwingungen-in-der-cochlea/oclc/14726186 > > Anyone at Princeton or McGill or elsewhere up for checking one out for me= ? > > @xxxxxxxx{ranke1931, > title=3D{Die Gleichrichter-Resonanztheorie (The Rectifier Resonance > Theory)}, > author=3D{Ranke, Otto Friedrich}, > year=3D{1931}, > publisher=3D{Lehmann} > } > > --089e011825d03df68f0500c7e54e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div><div>Thanks to our auditory-list friends in Montreal,= we now have a good scanned and OCR'd copy of Ranke's 1931 book.=C2= =A0 It definitely has a well-developed 2D model of cochlear waves.<br><br>I= t even addresses the question of how important membrane mass is, a topic th= at has come up many times since.=C2=A0 Here's what the OCR does with th= at section (after 2 or 3 minor OCR corrections):<br> <br>Einflu=C3=9F der Membranmasse.<br><br>Bei der Entwicklung der Potential= str=C3=B6mung wurde die Masse der Membran und ihrer Auflagerungen bisher ve= rnachl=C3=A4ssigt. Fast alle Untersucher gehen aber gerade von der Masse de= r Membran aus, oder halten wenigstens ihren Einflu=C3=9F auf die Schwingung= en in der Cochlea fu=CC=88r so wesentlich, da=C3=9F er nicht vernachl=C3=A4= ssigt werden darf. So mu=C3=9F ich ausdru=CC=88cklich nachweisen, da=C3=9F = die Vernachl=C3=A4ssigung der Membranmasse fu=CC=88r alle die F=C3=A4lle er= laubt ist, die bei den Schwingungen in der Cochlea von Wichtigkeit sind. Fr= eilich ist fu=CC=88r eine genauere Betrachtung auch die Masse der Membran n= icht zu u=CC=88bersehen. Vorl=C3=A4ufig handelt es sich jedoch um grobe Ann= =C3=A4herungen. Es ist daher gegenu=CC=88ber den bisherigen Untersuchern nu= r der Beweis zu erbringen, da=C3=9F in erster Ann=C3=A4herung der Vernachl= =C3=A4ssigung der Membranmasse eine geringere Bedeutung beizumessen ist als= der besonders von Koch benutzten Vernachl=C3=A4ssigung der Masse der mitbe= wegten Flu=CC=88ssigkeit.<br> <br>Fu=CC=88r den Fall einer Potentialstr=C3=B6mung in engen Kan=C3=A4len, = fu=CC=88r den die Potentialstr=C3=B6mung oben entwickelt wurde, l=C3=A4=C3= =9Ft sich die Masse der Membran nicht sehr einfach einfu=CC=88hren, wenn ma= n nicht grobe Vereinfachungen in Kauf nehmen will. Doch gewinnt man auch au= s der Betrachtung einfacher F=C3=A4lle, die sich streng durchfu=CC=88hren l= assen, ein Urteil, wann die Masse der Membran nicht mehr vernachl=C3=A4ssig= t werden darf. Wir wollen uns daher auf den einfachsten Fall beschr=C3=A4nk= en, der mathematisch am leichtesten durchzufu=CC=88hren ist.<br> <br></div><div>and Google Translate:<br><br>Influence of the membrane mass.= <br><br>In developing the potential flow, the mass of the diaphragm and its= deposits has been neglected. But almost all investigators go straight from= the mass of the diaphragm from, or at least keep their influence on the vi= brations in the cochlea so essential that it should not be neglected. So I = have to explicitly demonstrate that the neglect of the membrane mass for al= l the cases is allowed, which are at the vibrations in the cochlea of =E2= =80=8B=E2=80=8Bimportance. Certainly not to be overlooked for a closer look= at the mass of the membrane. Being there is, however, only rough approxima= tions. It is therefore to provide over previous investigators only the proo= f that in a first approximation, the neglect of the membrane mass of less i= mportance should be attached as the most used cooking neglect the mass of t= he entrained liquid.<br> <br>In the case of a potential flow in narrow channels, for which the poten= tial flow has been developed above, the mass of the membrane can be introdu= ced not very easy when you do not want to take gross simplifications in pur= chasing. But you also gain from consideration of simple cases that can be s= trictly carry out a judgment, when the mass of the diaphragm can no longer = be neglected. We will therefore restrict ourselves to the simplest case, wh= ich is mathematically perform the easiest.<br> </div><div><br><br></div>I can't republish it, but I'm happy to sha= re it for fair-use research purposes, especially with anyone who will help = translate parts of it.=C2=A0 With the decent OCR by Abbyy, we get a good st= art with Google Translate, but it will be a lot of work to make sense of pa= ges full of equations and such.=C2=A0 It's only 85 pages total.<br> <br></div>Dick<br><div><br></div></div><div class=3D"gmail_extra"><br><br><= div class=3D"gmail_quote">On Sun, Jun 22, 2014 at 9:49 PM, Richard F. Lyon = <span dir=3D"ltr"><<a href=3D"mailto:dicklyon@xxxxxxxx" target=3D"_blank"= >dicklyon@xxxxxxxx</a>></span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div><div>This seems to be = where the 2D cochlear wave model first came up, <br></div>but I can't l= ocate a copy with 2000 miles, though WorldCat shows a<br> few around, includes 2 in North America:<br><a href=3D"http://www.worldcat.= org/title/gleichrichter-resonanztheorie-eine-erweiterung-der-helmholtzschen= -resonanztheorie-des-gehors-durch-physikalische-untersuchung-der-flussigkei= tsschwingungen-in-der-cochlea/oclc/14726186" target=3D"_blank">http://www.w= orldcat.org/title/gleichrichter-resonanztheorie-eine-erweiterung-der-helmho= ltzschen-resonanztheorie-des-gehors-durch-physikalische-untersuchung-der-fl= ussigkeitsschwingungen-in-der-cochlea/oclc/14726186</a><br> <br></div>Anyone at Princeton or McGill or elsewhere up for checking one ou= t for me?<br><div><br><div><div>@xxxxxxxx{ranke1931,<br>=C2=A0 title=3D{Die Gle= ichrichter-Resonanztheorie (The Rectifier Resonance Theory)},<br>=C2=A0 aut= hor=3D{Ranke, Otto Friedrich},<br> =C2=A0 year=3D{1931},<br>=C2=A0 publisher=3D{Lehmann}<br>}<br><br></div></d= iv></div></div> </blockquote></div><br></div> --089e011825d03df68f0500c7e54e--