I can't quite picture the dimensions you are referring to. I have seen players with shortened shanks on their mouthpiece, which shows support for your belief that shortening the distance from the bore to the venturi can be beneficial. However, I made a quick sketch showing the mouthpiece cup, bore, borelength, backbore, the receiver tapering to the venturi, then the leadpipe flaring out from the venturi. From the little I know about acoustic resonators, the sketch convinced me this is a very complicated set of relationships. I have seen many explanations of the effect of changes to each individual component, but never the interaction of the chamber taken as a whole. The information Lawson has presented over the years suggests he has a lot of experience working this problem.
A good set of rubber lips with an air tank, and a microphone and oscilloscope could probably be a good start on a very worthwhile project, but I'd be surprised to see the results made public. In a message dated 1/4/2005 4:05:59 PM Eastern Standard Time, <[EMAIL PROTECTED]> writes: >With all kind of horns I preferred that the mouthpiece fitted into the >receiver in a way, that only about 5 mms of the shank protruded from the >lead pipes front end. It is a dramatic change to the worse if the mouth >piece shank protrudes much further, as often seen sticking in the lead >pipe for just 10 mms. The nearer the narrowest point in the mouth piece >(the bore) to the beginning of the lead pipe the better. >========================================================== > >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Steve >Freides >Sent: Tuesday, January 04, 2005 9:52 PM >To: 'The Horn List' >Subject: RE: [Hornlist] Re: Mouthpiece Survey (effect of mouthpiece >depth) > >Very interesting - I measured how far my Holton Farkas MC goes into my >old >Conn 4D and it's almost exactly 5/8" - but the mouthpiece is used and >the >previous owner apparently inserted it almost an inch, about 15/16", into >his >horn - or, i guess, stored it in something that came up that far. > >Mine rattles a bit so I think I will ask the local repair person to >tighten >up the received a bit but be sure to preserve the amount of insertion. > >-S- > >> -----Original Message----- >> From: >> [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] >> du] On Behalf Of Stuart A. de Haro >> Sent: Tuesday, January 04, 2005 1:26 PM >> To: horn@music.memphis.edu >> Subject: [Hornlist] Re: Mouthpiece Survey (effect of mouthpiece depth) >> >> Hi Steve, >> >> When the mouthpiece fits in too far, you tend to lose >> focus to the notes. When it doesn't fit in far enough, the >> notes become too slotted and slurs become difficult. Ideal >> is around .625" (5/8"). That said, I think if you have a >> good combination right now, I wouldn't worry about it too much. >> >> Stuart de Haro >> >> > message: 2 >> > date: Tue, 4 Jan 2005 12:29:01 -0500 >> > from: "Steve Freides" <[EMAIL PROTECTED]> >> > subject: RE: [Hornlist] Re: Mouthpiece Survey >> > >> > I'm sure this is obvious to many, but would you please describe the >> > difference in playing a mouthpiece you like that's inserted >> too far - >> > is there less resistance, a change in overall pitch, in >> > intonation/tuning, a change in tone color, are register extremes >> > harder or easier, etc. >> > Because >> > I'm playing an old horn with modern mouthpieces, this may be a >> > relevant issue for me (but, at the moment, my current >> mouthpiece/horn >> > combination seems to work just fine). >> > >> > Thanks in advance. >> > >> > -S- >> >> >> >> >> __________________________________ >> Do you Yahoo!? >> Yahoo! Mail - Find what you need with new enhanced search. >> http://info.mail.yahoo.com/mail_250 >> _______________________________________________ >> post: horn@music.memphis.edu >> unsubscribe or set options at >> http://music.memphis.edu/mailman/options/horn/steve%40fridaysc >omputer.com > >_______________________________________________ >post: horn@music.memphis.edu >unsubscribe or set options at >http://music.memphis.edu/mailman/options/horn/hans%40pizka.de > >_______________________________________________ >post: horn@music.memphis.edu >unsubscribe or set options at >http://music.memphis.edu/mailman/options/horn/billbamberg%40aol.com > _______________________________________________ post: horn@music.memphis.edu unsubscribe or set options at http://music.memphis.edu/mailman/options/horn/archive%40jab.org
