source file: mills2.txt Date: Wed, 6 Nov 1996 15:07:31 -0800 Subject: Pitch Bend Tuning From: asouter@scf.usc.edu (Andrew Souter) Friends, Doesn't anyone know the details about pitch bend tuning on a K2000? Can someone just tell me the details about using pitch bend to tune in general? I assume that in order to do so, one must know the kind of details which I asked about in my last post. Gary Morison, seems to agree in his response to a different question which contained the following: "2. As far as I can tell from the MIDI spec, there is no standard amount of pitch deflection that a give amount of change in pitch-wheel value should produce. I would not be surprised if there is a defacto standard, perhaps whatever the DX-7 does or something to that effect. Similarly, I know of no guarantee that all instruments will bend pitch consistently with each other. By that I mean that, best I can tell from the MIDI spec alone at least, some instruments could bend pitch in proportion to frequency, some in proportion to log frequency, and some in proportion to period, if they so desire. Again, there may be a defacto standard that will save you. Perhaps somebody will correct me if I'm wrong. " Has anyone successfully found out these sort of details for any specific synths. I know on the K2000 at least, the response to pitch bend messages is scalable from 1 cent to 7200 cents for full MIDI value of 8192. But does that mean that if it is set to 1 cent that the Kurzweil has a hardware tuning resolution of 1/1892 cents? It seems highly unlikely. So how does one find out how specific instruments respond to pitch bend, and how their hardware tuning is implemented? Could someone please address my previous post, and at least tell me that no one knows if that is the case so that I may then track down the engineers? Any information form anyone with even the slightest relevance would be greatly appreciated. We need to figure these details out. Oh, and in honor of good old Pandora, does anyone know what the current status of ZIPI is? And has anyone used the tonality functions in Peter Stone's Symbolic Composer? -andrew Safe Journey... Received: from ns.ezh.nl [137.174.112.59] by vbv40.ezh.nl with SMTP-OpenVMS via TCP/IP; Thu, 7 Nov 1996 00:30 +0100 Received: by ns.ezh.nl; (5.65v3.2/1.3/10May95) id AA06280; Thu, 7 Nov 1996 00:31:13 +0100 Received: from eartha.mills.edu by ns (smtpxd); id XA06272 Received: from by eartha.mills.edu via SMTP (940816.SGI.8.6.9/930416.SGI) for id PAA15872; Wed, 6 Nov 1996 15:31:05 -0800 Date: Wed, 6 Nov 1996 15:31:05 -0800 Message-Id: <22961106232822/0005695065PK5EM@MCIMAIL.COM> Errors-To: madole@ella.mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu