Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!rochester!cornell!uw-beaver!ssc-vax!uvicctr!collinge From: collinge@uvicctr.UUCP (Doug Collinge) Newsgroups: sci.electronics Subject: Re: 3800 Hz notch filter [will] be used on CD masters Message-ID: <270@uvicctr.UUCP> Date: Sat, 11-Jul-87 18:13:02 EDT Article-I.D.: uvicctr.270 Posted: Sat Jul 11 18:13:02 1987 Date-Received: Thu, 16-Jul-87 03:30:04 EDT References: <598@neoucom.UUCP> <67@sdeggo.UUCP> <1597@ihuxi.ATT.COM> <268@uvicctr.UUCP> <1003@speech1.cs.cmu.edu> Reply-To: collinge@uvicctr.UUCP (Doug Collinge) Organization: University of Victoria, Victoria B.C. Canada Lines: 37 In article <1003@speech1.cs.cmu.edu> phd@speech1.cs.cmu.edu (Paul Dietz) writes: >This is a very interesting proposal! It is based upon the assumption that >most instruments generate harmonic partials in a fairly smooth fashion. >This is quite reasonable for certain instruments, for instance, the >brasses. However, some instruments have enharmonic partials (bells >come to mind), and some have very pronounced gaps (like the clarinet) >which give rise to the characteristic timbre. These might sound a little >strange when a hole that was there before suddenly gets filled when >running up a scale. Most real instruments change the shape of their spectrum for every note - since we are talking about probably only one partial no-one is likely to notice much. I think you would probably have to watch the amplitude of this synthetic partial but a little compromising given the average nature of musical sounds would probably do it. On the other hand: >I doubt most people will be able to notice the >difference without an A/B comparison anyway!) I have to agree with you but we'll wait for the blind tests. Does anyone know what the proposed bandwidth of this notch is? > >I don't really know what a fuzzbox does (feel free to send me mail...), >but I assume it's some sort of time invariant, non-linearity. Exactly, used for increasing the brilliance and sustain of electric guitar sounds. >(i.e. a comparator) Yes, typically, plus filters and various junk according to taste. -- Doug Collinge School of Music, University of Victoria, PO Box 1700, Victoria, B.C., Canada, V8W 2Y2 collinge@uvunix.BITNET decvax!uw-beaver!uvicctr!collinge ubc-vision!uvicctr!collinge