Re: [Flexradio] Idea for new feature: instant replay
This is a done deal on Linux and on Windows it is conceptually trivial but would require custom software to do it since jack does not exist on Windows yet. There is supposedly a windows jack effort underway. But I would like breathing to be a long term thing so I am not holding my breath (until I asphyxiate myself) waiting. Bob Frank Brickle wrote: > This is what the "timemachine" application does under the jack > audio subsystem under Linux. > > 73 > Frank > AB2KT > > Terry Fox wrote: > >> The best thing about TiVo is that it ALWAYS does this recording in the >> background. In order to make this truly effective, it must always be >> running in the background, with a button on the user interface that allows >> that last xx seconds/minutes to be saved, or played back. If you must first >> hit a UI button to enable this function, the advantage is usually lost (by >> the time you hit the button it's too late). Having a function to >> semi-permanently enable/disable (not in real-time) would be OK for those who >> don't need it. >> >> Opening a file that stores the last xx (30?) seconds as a circular buffer >> should not be too difficult, but it does add more overhead. Ideas regarding >> storage length and whether the demoded audio or IF signal should be recorded >> are other questions... >> >> Anyway, this is a great idea! I love my TiVos. >> Terry >> >> - Original Message - >> From: "Larry Loen" <[EMAIL PROTECTED]> >> To: "Jim Lux" <[EMAIL PROTECTED]> >> Cc: <[EMAIL PROTECTED]>; >> Sent: Sunday, January 07, 2007 11:29 AM >> Subject: Re: [Flexradio] Idea for new feature: instant replay >> >> >> >>> Jim Lux wrote: >>> >>> >>>> At 06:41 AM 1/7/2007, K0MV wrote: >>>> >>>> >>>> >>>>> Those of you who have Tivo boxes will recognize this. >>>>> >>>>> The feature is a continuous recording of the last 5 minutes of the >>>>> received signal. You can rewind and go back to see if you copied that >>>>> DX callsign correctly, or maybe try a narrower filter. >>>>> >>>>> >>>>> >>>> Excellent idea. Especially the idea with the narrower/different >>>> >> filtering. >> >>>> I gotta warn you, though,if this becomes popular, I can see the >>>> outcry on the contesting reflectors.There are folks who beleive >>>> that when the contest period ends, it's "pencils down". Others say, >>>> whatever it takes. Others say, if you didn't copy it that way >>>> initially, tough beans, no looking back. >>>> >>>> I love the excitement of rules interpretation that novel new >>>> functionality can give you. >>>> >>>> >>>> Jim, W6RMK >>>> >>>> >>>> >>>> >>>> >>>> >>> He he. But, in a more serious vein, without really huge amounts of >>> storage, at least with the way we do things now, this won't amount to >>> more than maybe a half hour or so. >>> >>> The straightforward way would be to have the current record function >>> simply. . .record to memory in some sort of rotating buffer instead of a >>> file as such. But, jack that up to more than a couple of minutes and it >>> gets very large, even by today's stanards. >>> >>> I must admit, I've lusted after this feature more than once. >>> >>> What would be nicer still would be the ability in the record menu to >>> have a "store last 15 seconds" feature. THAT would do exactly what >>> you're talking about and it would be sufficiently selective. But, no >>> popups on such a feature, just an info bar giving the file name. >>> >>> >>> >>> >>> Larry WO0Z >>> >>> >>> >>> >>> ___ >>> FlexRadio mailing list >>> FlexRadio@flex-radio.biz >>> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >>> Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >>> FlexRadio Homepage: http://www.flex-radio.com/ >>> >>> FlexRadio Knowledge Base: http://kb.flex-radio.com/ >>> >>> >> _
Re: [Flexradio] Idea for new feature: instant replay
From the ICOM 756PRO3 sales brochure: "A quick push of the front-panel DVR button allows you to record received signal into the R4 memory. The playback automatically mutes the receiver for clear playback of the previous 15 seconds of recorded audio. The perfect feature for those contest operators wanting to improve their UBN." So this feature is already available on the 756PRO3. But not 5 minutes. Jerry W4UK At 09:41 AM 1/7/2007, K0MV wrote: >Those of you who have Tivo boxes will recognize this. > >The feature is a continuous recording of the last 5 minutes of the >received signal. You can rewind and go back to see if you copied that >DX callsign correctly, or maybe try a narrower filter. > >Regards, >Chuck k0mv ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
This function seems to be covered by the built-in 'Wave" recorder function of PowerSDR -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070107/0513ef38/attachment.html ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
At 11:26 AM 1/7/2007, W7CE wrote: >- Original Message - > > At 08:41 AM 1/7/2007, K0MV wrote: > >>Those of you who have Tivo boxes will recognize this. > >> > >>The feature is a continuous recording of the last 5 minutes of the > >>received signal. You can rewind and go back to see if you copied that > >>DX callsign correctly, or maybe try a narrower filter. > >> > >>Regards, > >>Chuck k0mv > > > >I suggested this TIVO-like replay feature while chatting just before the >11/1 Town Meeting. I'd like to see it work just like the TIVO replay >feature: a pre-determined amount of recorded history in a moving window >(circular buffer) with the ability to rewind, fast-forward, slow-motion or >just go back 15 seconds at a time. Additionally, when going in slow-motion >the audio could be scaled to normal pitch. This would really help when >trying to pull out that weak one that insists on sending CW at 30+ WPM. I >think the IF should be recorded so that filters can be adjusted during >playback. Total size of the recording window should be adjustable. At 192 >KHz sampling, the storage requirements are not that large. Just use a file >for the buffer. My TIVO box maintains a 30 minute buffer for two separate >channels. Doing the same here requires a lot less storage. > >How would I use it? Primarily for getting the callsign of a weak station in >a pileup (usually on 160M or 80M), but I can also see using it for >weak-signal VHF/UHF work. I can't imagine using it much in a contest. >There usually isn't time for that kind of instant playback, unless you're >much better at multi-tasking than I am. You use it for, ahem, post contest "log checking". Hey, at least the signal was received over the air, which is a lot more sporting than "reading the callbook". But I see all these things as just sort of gradations of various strategies.. There are a number of CW decoders out there, and for the typical contest exchange, they'd probably work pretty well. Over lunch, we've talked about how it would be possible to build a piece of software that would do multiple parallel sequential decoding to dig out the weak signals (find the strong ones, subtract them, etc.), and while you're at it, totally automate the exchange (QSL, UR 59, PLS RPT ALL). Just think, you could sleep while your cluster computer racks up the big points in the contest for you. Instead of losing sleep during the contest, and spending all those hours refining your contesting skills, you'd be losing sleep in the months before, trying to get all that signal processing software working. This would, of course, be just another instance of a Cognitive Radio... Conceptually, it's not much different than playing chess vs writing software to be successful at chess. Neither is easy, they're just different, and would interest different types of people. What's cool about the new crop of SDR peripherals (SDR1000 being but one) is that they actually make stuff like this easier, because they DO provide a "closer to the air" audio stream, as opposed to something that has had a lot of analog processing. Jim, W6RMK ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
- Original Message - > At 08:41 AM 1/7/2007, K0MV wrote: >>Those of you who have Tivo boxes will recognize this. >> >>The feature is a continuous recording of the last 5 minutes of the >>received signal. You can rewind and go back to see if you copied that >>DX callsign correctly, or maybe try a narrower filter. >> >>Regards, >>Chuck k0mv > I suggested this TIVO-like replay feature while chatting just before the 11/1 Town Meeting. I'd like to see it work just like the TIVO replay feature: a pre-determined amount of recorded history in a moving window (circular buffer) with the ability to rewind, fast-forward, slow-motion or just go back 15 seconds at a time. Additionally, when going in slow-motion the audio could be scaled to normal pitch. This would really help when trying to pull out that weak one that insists on sending CW at 30+ WPM. I think the IF should be recorded so that filters can be adjusted during playback. Total size of the recording window should be adjustable. At 192 KHz sampling, the storage requirements are not that large. Just use a file for the buffer. My TIVO box maintains a 30 minute buffer for two separate channels. Doing the same here requires a lot less storage. How would I use it? Primarily for getting the callsign of a weak station in a pileup (usually on 160M or 80M), but I can also see using it for weak-signal VHF/UHF work. I can't imagine using it much in a contest. There usually isn't time for that kind of instant playback, unless you're much better at multi-tasking than I am. 73, Clay W7CE ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
At 08:41 AM 1/7/2007, K0MV wrote: >Those of you who have Tivo boxes will recognize this. > >The feature is a continuous recording of the last 5 minutes of the >received signal. You can rewind and go back to see if you copied that >DX callsign correctly, or maybe try a narrower filter. > >Regards, >Chuck k0mv An interesting and potentially useful idea. ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
At 08:29 AM 1/7/2007, Larry Loen wrote: >Jim Lux wrote: > > >He he. But, in a more serious vein, without really huge amounts of >storage, at least with the way we do things now, this won't amount >to more than maybe a half hour or so. > >The straightforward way would be to have the current record function >simply. . .record to memory in some sort of rotating buffer instead >of a file as such. But, jack that up to more than a couple of >minutes and it gets very large, even by today's stanards. > >I must admit, I've lusted after this feature more than once. > >What would be nicer still would be the ability in the record menu to >have a "store last 15 seconds" feature. THAT would do exactly what >you're talking about and it would be sufficiently selective. But, >no popups on such a feature, just an info bar giving the file name. My IC-7000 has a 'off the air' recording feature of some sort (I haven't used it) with a fair amount of recording time. I imagine it just records the audio stream, so a fairly small amount of memory can hold a LOT of time. Jim, W6RMK >Larry WO0Z > > James Lux, P.E. Spacecraft Radio Frequency Subsystems Group Flight Communications Systems Section Jet Propulsion Laboratory, Mail Stop 161-213 4800 Oak Grove Drive Pasadena CA 91109 tel: (818)354-2075 fax: (818)393-6875 ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
This is what the "timemachine" application does under the jack audio subsystem under Linux. 73 Frank AB2KT Terry Fox wrote: > The best thing about TiVo is that it ALWAYS does this recording in the > background. In order to make this truly effective, it must always be > running in the background, with a button on the user interface that allows > that last xx seconds/minutes to be saved, or played back. If you must first > hit a UI button to enable this function, the advantage is usually lost (by > the time you hit the button it's too late). Having a function to > semi-permanently enable/disable (not in real-time) would be OK for those who > don't need it. > > Opening a file that stores the last xx (30?) seconds as a circular buffer > should not be too difficult, but it does add more overhead. Ideas regarding > storage length and whether the demoded audio or IF signal should be recorded > are other questions... > > Anyway, this is a great idea! I love my TiVos. > Terry > > - Original Message - > From: "Larry Loen" <[EMAIL PROTECTED]> > To: "Jim Lux" <[EMAIL PROTECTED]> > Cc: <[EMAIL PROTECTED]>; > Sent: Sunday, January 07, 2007 11:29 AM > Subject: Re: [Flexradio] Idea for new feature: instant replay > > >> Jim Lux wrote: >> >>> At 06:41 AM 1/7/2007, K0MV wrote: >>> >>> >>>> Those of you who have Tivo boxes will recognize this. >>>> >>>> The feature is a continuous recording of the last 5 minutes of the >>>> received signal. You can rewind and go back to see if you copied that >>>> DX callsign correctly, or maybe try a narrower filter. >>>> >>>> >>> >>> Excellent idea. Especially the idea with the narrower/different > filtering. >>> I gotta warn you, though,if this becomes popular, I can see the >>> outcry on the contesting reflectors.There are folks who beleive >>> that when the contest period ends, it's "pencils down". Others say, >>> whatever it takes. Others say, if you didn't copy it that way >>> initially, tough beans, no looking back. >>> >>> I love the excitement of rules interpretation that novel new >>> functionality can give you. >>> >>> >>> Jim, W6RMK >>> >>> >>> >>> >>> >> He he. But, in a more serious vein, without really huge amounts of >> storage, at least with the way we do things now, this won't amount to >> more than maybe a half hour or so. >> >> The straightforward way would be to have the current record function >> simply. . .record to memory in some sort of rotating buffer instead of a >> file as such. But, jack that up to more than a couple of minutes and it >> gets very large, even by today's stanards. >> >> I must admit, I've lusted after this feature more than once. >> >> What would be nicer still would be the ability in the record menu to >> have a "store last 15 seconds" feature. THAT would do exactly what >> you're talking about and it would be sufficiently selective. But, no >> popups on such a feature, just an info bar giving the file name. >> >> >> >> >> Larry WO0Z >> >> >> >> >> ___ >> FlexRadio mailing list >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> FlexRadio Homepage: http://www.flex-radio.com/ >> >> FlexRadio Knowledge Base: http://kb.flex-radio.com/ >> > > > ___ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ > ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
The best thing about TiVo is that it ALWAYS does this recording in the background. In order to make this truly effective, it must always be running in the background, with a button on the user interface that allows that last xx seconds/minutes to be saved, or played back. If you must first hit a UI button to enable this function, the advantage is usually lost (by the time you hit the button it's too late). Having a function to semi-permanently enable/disable (not in real-time) would be OK for those who don't need it. Opening a file that stores the last xx (30?) seconds as a circular buffer should not be too difficult, but it does add more overhead. Ideas regarding storage length and whether the demoded audio or IF signal should be recorded are other questions... Anyway, this is a great idea! I love my TiVos. Terry - Original Message - From: "Larry Loen" <[EMAIL PROTECTED]> To: "Jim Lux" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]>; Sent: Sunday, January 07, 2007 11:29 AM Subject: Re: [Flexradio] Idea for new feature: instant replay > Jim Lux wrote: > > >At 06:41 AM 1/7/2007, K0MV wrote: > > > > > >>Those of you who have Tivo boxes will recognize this. > >> > >>The feature is a continuous recording of the last 5 minutes of the > >>received signal. You can rewind and go back to see if you copied that > >>DX callsign correctly, or maybe try a narrower filter. > >> > >> > > > > > >Excellent idea. Especially the idea with the narrower/different filtering. > > > >I gotta warn you, though,if this becomes popular, I can see the > >outcry on the contesting reflectors.There are folks who beleive > >that when the contest period ends, it's "pencils down". Others say, > >whatever it takes. Others say, if you didn't copy it that way > >initially, tough beans, no looking back. > > > >I love the excitement of rules interpretation that novel new > >functionality can give you. > > > > > >Jim, W6RMK > > > > > > > > > > > > He he. But, in a more serious vein, without really huge amounts of > storage, at least with the way we do things now, this won't amount to > more than maybe a half hour or so. > > The straightforward way would be to have the current record function > simply. . .record to memory in some sort of rotating buffer instead of a > file as such. But, jack that up to more than a couple of minutes and it > gets very large, even by today's stanards. > > I must admit, I've lusted after this feature more than once. > > What would be nicer still would be the ability in the record menu to > have a "store last 15 seconds" feature. THAT would do exactly what > you're talking about and it would be sufficiently selective. But, no > popups on such a feature, just an info bar giving the file name. > > > > > Larry WO0Z > > > > > ___ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ > ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
Jim Lux wrote: >At 06:41 AM 1/7/2007, K0MV wrote: > > >>Those of you who have Tivo boxes will recognize this. >> >>The feature is a continuous recording of the last 5 minutes of the >>received signal. You can rewind and go back to see if you copied that >>DX callsign correctly, or maybe try a narrower filter. >> >> > > >Excellent idea. Especially the idea with the narrower/different filtering. > >I gotta warn you, though,if this becomes popular, I can see the >outcry on the contesting reflectors.There are folks who beleive >that when the contest period ends, it's "pencils down". Others say, >whatever it takes. Others say, if you didn't copy it that way >initially, tough beans, no looking back. > >I love the excitement of rules interpretation that novel new >functionality can give you. > > >Jim, W6RMK > > > > > He he. But, in a more serious vein, without really huge amounts of storage, at least with the way we do things now, this won't amount to more than maybe a half hour or so. The straightforward way would be to have the current record function simply. . .record to memory in some sort of rotating buffer instead of a file as such. But, jack that up to more than a couple of minutes and it gets very large, even by today's stanards. I must admit, I've lusted after this feature more than once. What would be nicer still would be the ability in the record menu to have a "store last 15 seconds" feature. THAT would do exactly what you're talking about and it would be sufficiently selective. But, no popups on such a feature, just an info bar giving the file name. Larry WO0Z ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
At 06:41 AM 1/7/2007, K0MV wrote: >Those of you who have Tivo boxes will recognize this. > >The feature is a continuous recording of the last 5 minutes of the >received signal. You can rewind and go back to see if you copied that >DX callsign correctly, or maybe try a narrower filter. Excellent idea. Especially the idea with the narrower/different filtering. I gotta warn you, though,if this becomes popular, I can see the outcry on the contesting reflectors.There are folks who beleive that when the contest period ends, it's "pencils down". Others say, whatever it takes. Others say, if you didn't copy it that way initially, tough beans, no looking back. I love the excitement of rules interpretation that novel new functionality can give you. Jim, W6RMK ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
Re: [Flexradio] Idea for new feature: instant replay
WOW !!! I have not the TiVo boxes but I have understand what you say ! SUPER ! The limits of SDR ? only one...the fantasy ! 73 Beppe IK3VIG At 15.41 07/01/2007, you wrote: >Those of you who have Tivo boxes will recognize this. > >The feature is a continuous recording of the last 5 minutes of the >received signal. You can rewind and go back to see if you copied that >DX callsign correctly, or maybe try a narrower filter. > >Regards, >Chuck k0mv > >___ >FlexRadio mailing list >FlexRadio@flex-radio.biz >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >FlexRadio Homepage: http://www.flex-radio.com/ > >FlexRadio Knowledge Base: http://kb.flex-radio.com/ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
[Flexradio] Idea for new feature: instant replay
Those of you who have Tivo boxes will recognize this. The feature is a continuous recording of the last 5 minutes of the received signal. You can rewind and go back to see if you copied that DX callsign correctly, or maybe try a narrower filter. Regards, Chuck k0mv ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
