Re: [Flexradio] Articulation
Yes, I'm playing with you Ed. I've talked with Bob on the air many times. I concede that he has forgotten more about this audio junk than I've ever known. I believe I would listen to him for sure.huh(maybe I'll get to test a mic or something for saying that) -Original Message- From: Edwin Marzan [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 04, 2008 10:54 PM To: Jimmy Jones Subject: RE: [Flexradio] Articulation Hey Doctor Jones, Are you bustin balls? You cannot be serious. I heard you have a rack in your shack the size of Trump Tower. Surely you know Robert!! Edwin Marzan AB2VW From: [EMAIL PROTECTED] To: flexradio@flex-radio.biz Date: Wed, 4 Jun 2008 20:42:06 -0500 Subject: [Flexradio] Articulation Ed, Who is bob heil? The Gd artic got nothing to do with it. (Jackie Gleason Impression) Party On I love my Flex. ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ _ It's easy to add contacts from Facebook and other social sites through Windows LiveT Messenger. Learn How. https://www.invite2messenger.net/im/?source=TXT_EML_WLH_LearnHow ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: It's all about articulation, Phil (inherent muddiness, of course)
Hi Edwin, I believe what's being said goes something like this: -- With a so-called 'flat' response at a wide bandwidth, articulation should be good and the character of the voice should sound natural. So a Heil PR-40 microphone plugged into a 'flat' preamp and amplifier sounds pretty natural and balanced when monitored with good quality headphones or speakers. -- When the bandwidth is restricted (for amateur radio purposes), all of the lopping-off of frequencies occurs at the high frequencies. These are also the frequencies that provide most of the articulation for speech. As a result, the spectral balance is severely disrupted, leaving us with essentially the same lows as before, but lots less of the higher frequencies, so things begin to sound 'muddy' due to a perceived increase in bass, (actually a loss of treble) and articulation suffers. -- Equalization is an attempt to restore balance between low and high frequencies, and in general is achieved by reducing the low frequencies, and increasing the high frequencies, producing a response curve that tilts up as frequency increases. This will always increase articulation, but to further restore a natural spectral balance to the remaining restricted bandwidth requires careful manipulation of levels at specific frequencies within this range. -- As Tim noted in a previous post, some radio manufacturers provide a tilted response to their microphone preamp circuitry, to attempt to compensate for their restricted bandwidth. The problem with that is that not all microphones have a flat response, and in fact some communications microphones have significant peaking deliberately built in. So, a fixed rising response characteristic may work in favor of some microphones, but may be detrimental to other microphones. FlexRadio takes a different approach by maintaining a completely flat response throughout the audio chain, while providing flexible tools (3 and 10 band equalizer, plus adjustable low and high corner frequencies for the filter) to modify the balance to achieve the desired effect. ... at least that's my story, and I'm sticking to it. 73, Dale WA8SRA Edwin Marzan wrote: Aparently there is a disagreement as to the cause of the muddiness although the limited bandwidth explanation makes sense to me. So is the cause lack of articulation or lack of bandwidth? Or a combination of both? eh? Edwin MarzanAB2VW ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: It's all about articulation, Phil (inherent muddiness, of course)
Thanks for an excellent response and to all who participated. Edwin MarzanAB2VW Hi Edwin, I believe what's being said goes something like this: -- With a so-called 'flat' response at a wide bandwidth, articulation should be good and the character of the voice should sound natural. So a Heil PR-40 microphone plugged into a 'flat' preamp and amplifier sounds pretty natural and balanced when monitored with good quality headphones or speakers. _ It’s easy to add contacts from Facebook and other social sites through Windows Live™ Messenger. Learn how. https://www.invite2messenger.net/im/?source=TXT_EML_WLH_LearnHow ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] ClickTune
Hi, I need some information how to make my radio work on CLICKTUNE. Clicking on the spike signal does do any thing. Please Help. Thank you. -- George Rebong KE6TE ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] ClickTune
George see page 57 of either the FLEX-5000 Owners Manual, v1.10.3 or the SDR-1000 Operating Manual v1.8.0 In summary, with the panadapter or waterfall display showing, right click to display yellow cross hairs, then left click on your signal of interest. If you want the VFO to snap to the nearest multiple of the tune step, check Snap Click Tune on Setup FormGeneralOptions. 73 de Joe - AB1DO - Original Message - From: George Rebong [EMAIL PROTECTED] To: flexradio@flex-radio.biz Sent: Thursday, June 05, 2008 09:09 Subject: [Flexradio] ClickTune Hi, I need some information how to make my radio work on CLICKTUNE. Clicking on the spike signal does do any thing. Please Help. Thank you. -- George Rebong KE6TE ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Voting for new features?
Does the SteppIR controller have commands (via the Serial Port) for these functions? If so maybe Steve can add these function to DDUtil's rotor tap. I thought that generally the SteppIR was only in a passive listening mode. 73's nu6x Mark Sedona, AZ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan NV8A Sent: Wednesday, June 04, 2008 6:37 PM To: FlexRadio Reflector Subject: [Flexradio] Voting for new features? Is there any way we can vote for new features other than by commenting on feature requests already posted? E.g., are there only two Flex customers using SteppIR antennas and wishing that the antenna's 180-degree, bidirectional and normal modes could be selected from PowerSDR? I commented on the original request, but there has been no other comment or any response from the programmer(s) indicating how feasible this is. 73 Alan NV8A ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.24.6/1482 - Release Date: 6/4/2008 7:10 AM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Voting for new features?
If you come thru the second port (the one usually used to gang controllers) you can fully control (180 degrees, bidirectional, etc.) but that means you are not using the radio monitoring mode but active control. There is a standalone utility at www.telepostinc.com that can control the steppir controller but I think it isn't compatible with the very latest firmware. Neal On Thu, Jun 5, 2008 at 9:53 AM, Mark Mumaw [EMAIL PROTECTED] wrote: Does the SteppIR controller have commands (via the Serial Port) for these functions? If so maybe Steve can add these function to DDUtil's rotor tap. I thought that generally the SteppIR was only in a passive listening mode. 73's nu6x Mark Sedona, AZ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan NV8A Sent: Wednesday, June 04, 2008 6:37 PM To: FlexRadio Reflector Subject: [Flexradio] Voting for new features? Is there any way we can vote for new features other than by commenting on feature requests already posted? E.g., are there only two Flex customers using SteppIR antennas and wishing that the antenna's 180-degree, bidirectional and normal modes could be selected from PowerSDR? I commented on the original request, but there has been no other comment or any response from the programmer(s) indicating how feasible this is. 73 Alan NV8A ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.24.6/1482 - Release Date: 6/4/2008 7:10 AM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ -- Neal Campbell Abroham Neal Software Programming Services for Windows, OS X and Linux (540) 242 0911 - Try Spot for OS X, the intelligent DXCluster Client at www.abrohamnealsoftware.com - introduction priced at $10.99 For a great dog book, visit www.abrohamneal.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] ClickTune
George, Put the cursor anywhere on the panadapter right-click. This will turn on yellow crosshairs. Put the crosshairs on the desired frequency/signal click. 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Voting for new features?
I have answered Alan privately, but here is some general info. SteppIR antenna controllers have two modes of operation. 1. Passive Listener mode - follows frequency (receive only) 2. Full Control mode - follows frequency and allows bi-directional communication including mode control, homing and calibration. DDutil 1.5.7 has full SteppIR controls (rotor tab) including PowerSDR transmit inhibit when the antenna is changing frequency. 73, Steve K5FR http://k5fr.com/ddutilwiki/ http://groups.yahoo.com/group/DDUtil/ -Original Message- Does the SteppIR controller have commands (via the Serial Port) for these functions? If so maybe Steve can add these function to DDUtil's rotor tap. I thought that generally the SteppIR was only in a passive listening mode. 73's nu6x Mark Sedona, AZ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan NV8A Sent: Wednesday, June 04, 2008 6:37 PM To: FlexRadio Reflector Subject: [Flexradio] Voting for new features? Is there any way we can vote for new features other than by commenting on feature requests already posted? E.g., are there only two Flex customers using SteppIR antennas and wishing that the antenna's 180-degree, bidirectional and normal modes could be selected from PowerSDR? I commented on the original request, but there has been no other comment or any response from the programmer(s) indicating how feasible this is. 73 Alan NV8A ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.24.6/1482 - Release Date: 6/4/2008 7:10 AM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] Muddy Sound ...etc.
Having ran Astatic in the 1980's, and being one of the first people in the country to be licensed for the first audio equalization processes for room reinforcement systems, let me add my comments to the articulation and microphone discussion. The original D-104 was chosen by so many hams, as the crystal element was designed to emphasize the 300-3,000 hz range. Most articulation is added in the 2,000 to 3,000 hz area and the D-104 had a bump there. Also the D-104 had output (Hi-z) that could almost drive the modulators of the time with no pre-amp...Hi, Hi. First SSB rigs were designed to limit the response in that same range, so that mike was popular for the new SSBers. As Kenwood and others developed rigs that gave better response in the low end and low-z, dynamic mikes were now becoming popular, Bob Heil made his living by producing microphones that have a taylored response for typical rigs and applications. Bob's PR-40 is a professional, flat response mike, more suited for broadcast, than ham usage. It is much like a Sennhesier MD-441, in that there are certain characteristics that sound great for broadcast (and the PR-40 also has a very directional cardiod pattern). As the PR-40 has the typical dynamic proximity effect (get's boomy as you get closer to it), most hams have to taylor the response with some eq in the low end to remove this effect. I have tested the Flex-5k inputs with a noise generator and analyzer and it is flat as a pancake. That is why the PR-40 sounds great (some minor touch up of the 100-400 hz range) right in the front mike connector. In fact, after running my PR-40 through my DSP audio rack, the sound is not too different between the front panel 5K mike jack and my rack.You can have an articulate 100-3000hz SSB signal, so articulation and bandwidth are not tied together. The real problem is listener fatigue (as pointed out by the first gentleman in this chain). There have been many papers written over the years and published in the Audio Engineering Society Journal. I designed and ran the sound system for the AES meetings in L.A. for several years. Room acoustics (reverberation, multi path signals or echo), noise (huge listener fatigue occurs when the noise floor is within 10 db of signal), and our buddy articulation, are all key factors. Without a doubt, a wider bandwidth, higher fidelity signal, produces less listener fatigue. Years ago, we did some tests where we used just high frequency (300hz roll off) horns in sound reinforcement systems. We then added bass horn cabinets to the same installations. The difference in listener fatigue was huge. So, most importantly, in my audio tests and on air results of eqing an SSB signal, adding presence in the low end is essential to providing a signal that produces lower listening fatigue. Adding extra bandwidth in the high end is great (and I do it all the time where it does not interfere with others), but the low end presence is still the key!!! Harry W9BR **Get trade secrets for amazing burgers. Watch Cooking with Tyler Florence on AOL Food. (http://food.aol.com/tyler-florence?video=4?NCID=aolfod000302) ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] ClickTune
Only Snap Click Tune, i.e. snapping to the nearest multiple of the tune step, set on the front console. 73 de Joe - AB1DO - Original Message - From: Edwin Marzan [EMAIL PROTECTED] To: Ray, K9DUR [EMAIL PROTECTED]; 'George Rebong' [EMAIL PROTECTED]; flexradio@flex-radio.biz Sent: Thursday, June 05, 2008 13:02 Subject: Re: [Flexradio] ClickTune I'm not in front of my radio but doesn't click tune have to be enabled on the setup form, first. I could be wrong!!Edwin MarzanAB2VW From: [EMAIL PROTECTED] To: [EMAIL PROTECTED]; flexradio@flex-radio.biz Date: Thu, 5 Jun 2008 10:16:14 -0400 Subject: Re: [Flexradio] ClickTune George, Put the cursor anywhere on the panadapter right-click. This will turn on yellow crosshairs. Put the crosshairs on the desired frequency/signal click. 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ _ It’s easy to add contacts from Facebook and other social sites through Windows Live™ Messenger. Learn how. https://www.invite2messenger.net/im/?source=TXT_EML_WLH_LearnHow ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Ahhh Grasshopper. The KB is all knowing. It should have all that your heart desires. http://kb.flex-radio.com/article.aspx?id=10343 -Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter G. Viscarola Sent: Thursday, June 05, 2008 3:42 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] articulation and bandwidth I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Ok Peter here we go again.but first let me add, I always tell folks trying to match their 20/20 voice in 0 to 3.2K bandwidth ...make a 20/20 recording of your self with the microphone your going to use ...then when you get close ask your wife to pick out which is which.if she gives up...You Win...!! It can be doneI always pass the 16-17-18-19-sugar test and the Please Orange Test!!! Here we go. Well, one of the approaches to kill the muddiness, is a technique that has been employed in recording/broadcasting over the years.. 1.- There is a magic spot in everybody's voice that will increase clarity and pull down the lo-mid darkness (Muddiness) ... its different in everybody's voice but can be found around 160 Hz .. use a narrow Q and an amplitude reduction of 6-8-10 dB. Throttle around 160 till you find your own personal spot.(mine is at 148) 2.- To increase the clarity, add 6-8-109 dB at 3730 Hz, now its not the 3720 we are concerned with ... its the magic 2d harmonic at 1865, with a long Q. (You want clarity..here it is..!!) 3.- Now put a low end cut of 10 dB beginning at 65 Hz going down and a 6-8-12 dB high end cut at 3200 Hz going up. 4.- As a option for polish and fullness add 3-6 dB at 80 Hz with a sharp Q... and throttle for the sweet spot You would be surprised a the number of studio voices this trick of 160 and a 3720 harmonic saved from the cutting floor A number of years ago the Australian commercial SSB folks were on to the work being done stateside with the Audio Folks on 14.198 then 14.178 ..information was exchanged and they went over to the Aphex Air Chain, and a bunch of goodies from Bob Orban.and were tickled at the results... -Bill [EMAIL PROTECTED] http://www.kc4pe.com/amateurshack.htm - Original Message - From: Peter G. Viscarola [EMAIL PROTECTED] To: flexradio@flex-radio.biz Sent: Thursday, June 05, 2008 3:42 PM Subject: Re: [Flexradio] articulation and bandwidth I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
For additional information Visit Nu9N's site for an in depth discussion of audio as it pertains to ham adio http://www.nu9n.com/home.html John P. Basilotto W5GI Chief Operating Officer Marketing and Sales Office 512 535-5266 FAX512 233-5143 www.flex-radio.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter G. Viscarola Sent: Thursday, June 05, 2008 2:42 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] articulation and bandwidth I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Seems like a parametric EQ would be the best candidate for the job. It doesn't seem like the current EQ would be able to handle this in it's current incarnation. Perhaps a feature request is in order. It probably should be enabled in expert mode. Edwin MarzanAB2VW 1.- There is a magic spot in everybody's voice that will increase clarity and pull down the lo-mid darkness (Muddiness) ... its different in everybody's voice but can be found around 160 Hz .. use a narrow Q and an amplitude reduction of 6-8-10 dB. Throttle around 160 till you find your own personal spot.(mine is at 148) _ Now you can invite friends from Facebook and other groups to join you on Windows Live™ Messenger. Add now. https://www.invite2messenger.net/im/?source=TXT_EML_WLH_AddNow_Now ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Peter, Tim and All, My settings for Elecraft K3 TX equalizer are following for high noise/DX pileup conditions: 50 Hz -16 dB 100 Hz -16 dB 200 Hz -12 dB 400 Hz ±0 dB 800 Hz + 9 dB 1200 Hz +16 dB 2400 Hz +16 dB 3200 Hz -16 dB After that there is 2,7 kHz roofing filter. The compression setting is put to the maximum 30. I have used similar kind of settings also for SDR-1000. I'm using a dynamic microphone with a practically flat frequency response. Remember however, that the optimal settings depend on the personal voice. Remember also that these settings are not for HiFi, but only for efficient punch with limited TX power and bandwidth through high noise and QRM. Since 1970's Im using same kind of equalizer settings together with the old fashioned RF-clipper during the years in all of my heavily modified analog rice box radios and I'm usually getting easily through the pileups with only 100 W output power. Now the DSP can do the same thing much better and in a more elegant way. Please, read the KB articles Tim is referring to: http://support.flex-radio.com/Downloads.aspx?fn=speech-processing.pdf http://support.flex-radio.com/Downloads.aspx?fn=filter-clipped-speech.pdf (Thanks Tim for putting those articles to the KB!) 73, Ahti OH2RZ 2008/6/5 Tim Ellison [EMAIL PROTECTED]: Ahhh Grasshopper. The KB is all knowing. It should have all that your heart desires. http://kb.flex-radio.com/article.aspx?id=10343 -Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter G. Viscarola Sent: Thursday, June 05, 2008 3:42 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] articulation and bandwidth I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Here's another tip to understanding what happens to audio when filter settings are change. Select a strong broadcast station and configure your filter settings to high and low -. Listen to the audio with either a set of studio headphones or Hi-Fi speakers. Now configure the receiver filter to the same as your transmitter filter, e.g. if your transmit filter is set to low 200 high 2800 then set your receiver filters to 200 and 2800. Note the change in fidelity. This is the same thing that happens when you feed wide response audio into the microphone then to a relatively narrow filter. Now play with the (Receive) 3-band EQ, then the 10 band EQ. This will give you some idea of equalization will affect your transmit audio. I think you'll be enlightened. John P. Basilotto W5GI Chief Operating Officer Marketing and Sales Office 512 535-5266 FAX512 233-5143 www.flex-radio.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Basilotto Sent: Thursday, June 05, 2008 3:03 PM To: 'Peter G. Viscarola'; flexradio@flex-radio.biz Subject: Re: [Flexradio] articulation and bandwidth For additional information Visit Nu9N's site for an in depth discussion of audio as it pertains to ham adio http://www.nu9n.com/home.html John P. Basilotto W5GI Chief Operating Officer Marketing and Sales Office 512 535-5266 FAX512 233-5143 www.flex-radio.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter G. Viscarola Sent: Thursday, June 05, 2008 2:42 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] articulation and bandwidth I've been following the discussion of SSB intelligibility with much interest. While I don't think I'm game for reading the journal articles, I *would* appreciate some practical EQ advice... I think I heard somebody say cut at 150 and also bump at 2300 (was it)?? I'm not asking for a prescription, obviously, but I know it'd help ME to get some starting values, de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
Thanks to ALL for the immediate replies and very down-to-earth useful ideas. I really do appreciate it. Now play with the (Receive) 3-band EQ, then the 10 band EQ. This will give you some idea of equalization will affect your transmit audio. I think you'll be enlightened. THAT is simple and an EXCELLENT sounding idea, thanks. de Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] articulation and bandwidth
At 12:15 PM 6/5/2008, Brian C wrote: Dale is absolutely correct. In a bandwidth of approximately 80 Hz to 8 KHz, with a microphone having a flat response, and using headphones with a flat response, the human voice sounds completely natural. In a bandwidth of 3 KHz, or less, up to 25% of vocalizations present in wider bandwidths are missing. By using equalization, or microphone pre-emphasis, muddiness is reduced or eliminated, and articulation and intelligibility are improved. All of the current research in audiology, voip, and psycho-physio-acoustics attempts to analyze the relationship between bandwidth and articulation. The current focus is on finding some happy medium between the two for things like hearing aids, annunciator sytems, air-to-ground comms, voip, etc. There are literally hundreds of modern, scientifically designed, peer reviewed studies focusing on this relationship. For our purposes, 3KHz SSB, amateur communications, a Heil mic with pre-emphasis built in, and/or the EQ in PowerSDR will cure muddiness and the inarticulate audio blues. Please email me off list if you'd like to read some journal articles about the foregoing. There's also the whole thing of effective low bitrate digital voice codecs. Relatively few systems actually just digitize the analog waveform and send it, a la the classic mu or A law phone codec, or 16 kbps CVSD. So there's a lot of work on how to encode all the bandwidth (as noted above and in previous posts, more bandwidth tends to improve understandibility, etc.), while still using a low overall bit rate. For instance, GSM cell phones use only 8kbps (with FEC it's 13 kbps), but, as everyone has probably noticed, there are some pretty obnoxious artifacts. OTOH, there are other 8 kbps codecs available that sound MUCH better. Even ones at lower rates (4.8, 2.4, etc.). You can send sort of understandable speech of pretty crummy overall quality in as little as 500 bps. ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] 160 khz Notch Filter
What ever happened to the 160 khz notch filter in the PowerSDR ? It really helped with the Heil PR40 PR780 microphones. Hope we can get it back. 73's , Bruce KL7JDR Bruce W. Mills P.O. Box 1500 31490 Echo Lake Road Soldotna , Alaska 99669 (907)262-4373 [EMAIL PROTECTED] ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] ClickTune
Thank you very to all who responded to Email. I know now the wonders of ClickTune. 73 -- George Rebong KE6TE ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
