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21. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Larry Menzel" <retire@means.net>; Date: Wed, 6 Dec 2006 11:25:31 -0600; Well, I don't know about the rest of you, but I just plugged Lee's settings into my radio, and I'm fairly certain that I now have not only better response from my AGC circuitry, but also a much bette; /archives//html/TenTec/2006-12/msg00077.html (11,507 bytes)
22. Re: [TenTec] Noise Reduction Setting (score: 1): Author: wa3fiy@radioadv.com; Date: Wed, 06 Dec 2006 12:53:57 -0500; Hello Gary, I've been considering a hearing aid but my hearing problem is a tough one. I am deaf in my left ear and my right side is very poor. But the big problem is very loud tinnitus. In fact the; /archives//html/TenTec/2006-12/msg00079.html (10,215 bytes)
23. Re: [TenTec] Noise Reduction Setting (score: 1): Author: wa3fiy@radioadv.com; Date: Wed, 06 Dec 2006 13:46:52 -0500; Ooooops Sorry about that. My bad! That post was meant to go directly to Gary. But I guess you probably already figured that out. :-) 73, -Lee WA3FIY _______________________________________________ Te; /archives//html/TenTec/2006-12/msg00080.html (9,572 bytes)
24. [TenTec] Noise Reduction Setting (score: 1): Author: Emil Borys <w9nm@sbcglobal.net>; Date: Wed, 6 Dec 2006 21:14:06 -0800 (PST); Grant, I searched the archive before I called TenTec and before I posted here. After reading applicable archives there are almost as many opinions as posts. If any consensus can be gleaned from the p; /archives//html/TenTec/2006-12/msg00090.html (12,753 bytes)
25. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Thu, 7 Dec 2006 00:31:52 -0500; My two and a half cents worth.... I cannot comment on ALL the posts on this subject. People have widely divergent views on the effectiveness of the noise reduction software now (or previously) presen; /archives//html/TenTec/2006-12/msg00091.html (16,338 bytes)
26. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "n4dsp" <n4dsp@triad.rr.com>; Date: Thu, 7 Dec 2006 06:17:41 -0500; Ten-Tecs position is the NR will NOT increase gain but it will increase the Signal to Noise ratio. The NR in my Orion II works very well in this regard and I use it a fair amount of the time. I did n; /archives//html/TenTec/2006-12/msg00095.html (9,284 bytes)
27. [TenTec] Noise Reduction Setting (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Thu, 07 Dec 2006 08:03:22 -0500; AA2IZ wrote: However narrow the bandwidth, there is still a mixture of noise and signal left inside the pass band. Furthermore, properly implemented algorithms can identify much of this noise and eli; /archives//html/TenTec/2006-12/msg00096.html (8,855 bytes)
28. Re: [TenTec] Noise Reduction Setting (score: 1): Author: K4IA@aol.com; Date: Thu, 7 Dec 2006 08:56:59 EST; Amen Emil! And if anyone wonders how good NR "could be," load ver 1.371 and give a listen. That was the last time the NR in the Orion worked and it worked really well. It was dramatic, almost squelch; /archives//html/TenTec/2006-12/msg00102.html (8,877 bytes)
29. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Grant Youngman" <nq5t@tx.rr.com>; Date: Thu, 7 Dec 2006 12:11:20 -0600; There remain some apparent descrepancies between the manual description and current algorithm operation, and probably everyone agrees one or the other should be fixed. Which one should be the focus; /archives//html/TenTec/2006-12/msg00111.html (11,373 bytes)
30. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Barry Gross" <barry.n1eu@gmail.com>; Date: Thu, 7 Dec 2006 13:32:28 -0500; It's interesting that the NR allegedly broke at the same time the firmware was revised (from 1.371 to 1.372) to add linkage between RF Gain and AGC threshold. And some folks are now finding that with; /archives//html/TenTec/2006-12/msg00113.html (12,549 bytes)
31. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Grant Youngman" <nq5t@tx.rr.com>; Date: Thu, 7 Dec 2006 19:55:32 -0600; NR did not break between 1.371 and 1.372 if SNR improvement was your objective. Some characteristics changed, but weak signal SNR improvement was consistent with previous versions. Grant/NQ5T ______; /archives//html/TenTec/2006-12/msg00122.html (8,978 bytes)
32. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Grant Youngman" <nq5t@tx.rr.com>; Date: Thu, 7 Dec 2006 19:55:32 -0600; The purpose of NR is to increase SNR. It may be nice to have "quiet" copy, but if SNR doesn't improve, you will have quiet nice quite copy of nothing! You may recall I measured in some detail the NR; /archives//html/TenTec/2006-12/msg00124.html (10,836 bytes)
33. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Thu, 7 Dec 2006 22:38:21 -0500; That's all correct. Perhaps my choice of words was unfortunate. I did not say it produced any more GAIN. Rather I said that the DSP action resulted in more gains (in the war against noise....that is.; /archives//html/TenTec/2006-12/msg00127.html (11,607 bytes)
34. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Thu, 7 Dec 2006 22:47:25 -0500; I'm not familiar with Linrad, so on that I cannot comment. DSP work is not done with general purpose microcomputers running the huge overhead of an operating system and everything else. I can well be; /archives//html/TenTec/2006-12/msg00128.html (10,914 bytes)
35. [TenTec] Noise Reduction Setting (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Thu, 07 Dec 2006 23:20:22 -0500; employed in the Orion, or that they do actual DSP processing with it. Ten Tec's deafening silence on this whole DSP issue is a glaring failure of communication, IMHO. Hopefully we can get some factua; /archives//html/TenTec/2006-12/msg00129.html (8,818 bytes)
36. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Thu, 7 Dec 2006 23:31:29 -0500; Bill, One thing is for sure. IF...IF.....all that the processor in the Orion does is build a narrower bandwidth filter around the signal, then it follows as the night follows the day that a person do; /archives//html/TenTec/2006-12/msg00130.html (11,253 bytes)
37. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Grant Youngman" <nq5t@tx.rr.com>; Date: Thu, 7 Dec 2006 23:01:26 -0600; It's done in the DSP processors that handle all other receiver tasks. Not sure who might have led you to believe that there were dedicated or specialized NR processors. As far as I know, NR is imple; /archives//html/TenTec/2006-12/msg00131.html (8,419 bytes)
38. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Fri, 8 Dec 2006 00:35:57 -0500; Ok Grant.... I'm not trying to split hairs with you or be blindly argumentative....however, a DSP processor does nothing else, by the definition of the term. If it is a general purpose processor, cap; /archives//html/TenTec/2006-12/msg00132.html (11,883 bytes)
39. [TenTec] Noise Reduction Setting (score: 1): Author: "Merle Bone" <merlebone@charter.net>; Date: Thu, 7 Dec 2006 23:41:24 -0600; If this is all Ten Tec is doing, I wish they would say so !" -- I think they did say so............... Page 45 of the Orion Manual and page 45 of the Orion II Manual: "If you turn the DSP NR on, and; /archives//html/TenTec/2006-12/msg00133.html (10,306 bytes)
40. Re: [TenTec] Noise Reduction Setting (score: 1): Author: "Duane Calvin" <ac5aa1@gmail.com>; Date: Thu, 7 Dec 2006 23:53:05 -0600; Gary, Your use of the term "DSP" almost sounds like you're limiting its definition to noise reduction only. There are many more applications of DSP than just noise reduction. 73, Duane Duane Calvin,; /archives//html/TenTec/2006-12/msg00134.html (12,995 bytes)

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