source file: mills3.txt Date: Thu, 15 Jan 1998 21:35:06 +0100 Subject: RE: MID/Audio Wish List From: "Loffink, John" Patrick Ozzard-Low wrote: >Regarding Mr Mickey Mouse: On the Roland, if you want to preserve a >any kind of realistic quality of timbre the upper limit of >transposing a sample from its original sampled pitch is about a >minor third (up), and a major third down - depending on the timbre. >In my own case, I typically use a sample mapped to no more than about >150 cents BELOW the original sampled pitch, but very seldom >transposed upward. This is more than adequate for my purposes >(local friends think I'm too fussy) and there is no 'mickey mouse' >effect within these limits. > >More correctly, you have limited the transposition artifacts on timbre to an >acceptable level. They are still there, and the degree will vary with every >sample's level of formant frequencies. > > > >Increasing the number of "Partials" will not solve your problem, >> >because you'll have a new one -- the sampler's internal RAM will >> >not have enough storage to handle the increase. Program parameters >> >are most likely to be stored in 64K to 512K local RAM inside the >> >unit, not your 32M to 128M sample RAM. If you now ask >> >manufacturers to increase the local RAM just for microtonal >> >support, I can tell you that none of them will do it because that >> >increases the price of the hardware. > >Sorry, John, this is wrong. Increasing the number of 'partials' has >no effect on the used sample RAM on the Roland or AKAI systems. > >Patrick, it's obvious you don't understand the difference between internal >program storage RAM and sample RAM. In fact, your following comments pretty >much proved what I said was right, that program parameters for "Partials" are >not stored in sample RAM on Roland samplers. Sample RAM is used to store the >raw samples. Program RAM is used to store loop points, tuning offsets, >velocity response, filter parameters, tuning tables, MIDI parameters, etc. >For a synthesizer, the builtin samples are stored in ROM (Read Only Memory), >the builtin program parameters are probably stored in the microprocessor code >ROM, and the user programs (no samples) are stored in battery backed RAM. > >More 'partials' does not mean more RAM; on the Roland >(at least) only samples take up sample RAM. > >See my response above. > John Loffink john.loffink@compaq.com > SMTPOriginator: tuning@eartha.mills.edu From: "Paul H. Erlich" Subject: RE: JI approximation to 22ET PostedDate: 15-01-98 21:47:32 SendTo: CN=coul1358/OU=AT/O=EZH ReplyTo: tuning@eartha.mills.edu $MessageStorage: 0 $UpdatedBy: CN=notesrv2/OU=Server/O=EZH,CN=coul1358/OU=AT/O=EZH,CN=Manuel op de Coul/OU=AT/O=EZH RouteServers: CN=notesrv2/OU=Server/O=EZH,CN=notesrv1/OU=Server/O=EZH RouteTimes: 15-01-98 21:46:51-15-01-98 21:46:52,15-01-98 21:46:37-15-01-98 21:46:38 DeliveredDate: 15-01-98 21:46:38 Categories: $Revisions: Received: from ns.ezh.nl ([137.174.112.59]) by notesrv2.ezh.nl (Lotus SMTP MTA SMTP v4.6 (462.2 9-3-1997)) with SMTP id C125658D.007226A4; Thu, 15 Jan 1998 21:47:18 +0100 Received: by ns.ezh.nl; (5.65v3.2/1.3/10May95) id AA21405; Thu, 15 Jan 1998 21:47:32 +0100 Date: Thu, 15 Jan 1998 21:47:32 +0100 Received: from ella.mills.edu by ns (smtpxd); id XA16401 Received: (qmail 25543 invoked from network); 15 Jan 1998 12:47:30 -0800 Received: from localhost (HELO ella.mills.edu) (127.0.0.1) by localhost with SMTP; 15 Jan 1998 12:47:30 -0800 Message-Id: Errors-To: madole@mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu