IQ 'Rewind/Replay' feature (?)


N8CVW
 

Greetings All

Desired feature :   IQ replay, a continuous loop circular buffer of (?) seconds of recorded IQ 

a) choose a frequency : current, memory selection, favorite selection, etc 

b) select a depth of replay, eg: 3 secs, 5 secs, 10 secs, etc ... maybe a right-click drop-down menu (?)

c) sdr replays last #-secs of IQ

is this already in SDRC somewhere ?

it seems I recall that the sdr that was used with QS1R radio back around 2009 (?) had this feature

thanks for guidance, or consideration for new feature (Simon) !

Paul
N8CVW


Simon Brown
 

You can do this in the Navigator window but it could be simpler, maybe a right-click option.

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of N8CVW via groups.io <n8cvw.gbmi@...>
Sent: 25 September 2022 14:40
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: [SDR-Radio] IQ 'Rewind/Replay' feature (?)
 
Greetings All

Desired feature :   IQ replay, a continuous loop circular buffer of (?) seconds of recorded IQ 

a) choose a frequency : current, memory selection, favorite selection, etc 

b) select a depth of replay, eg: 3 secs, 5 secs, 10 secs, etc ... maybe a right-click drop-down menu (?)

c) sdr replays last #-secs of IQ

is this already in SDRC somewhere ?

it seems I recall that the sdr that was used with QS1R radio back around 2009 (?) had this feature

thanks for guidance, or consideration for new feature (Simon) !

Paul
N8CVW


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N8CVW
 

Hi Simon

I missed this until just now checking for follow-up ...

I do not find 'Navigator' , unless this refers to the whole user interface, ribbon, etc

but nonetheless, 

is the program (A) always buffering/FIFO-ing the IQ/waterfall (?), so it the last ?-X-? seconds are spooled for replay ?

or, is it necessary to (B) 'Record' and then play back ?

If it's the case (A) that the data has been captured and can rewind/play,

please say a bit on how to do this.

Thanks !

Paul
N8CVW


Simon Brown
 

I hope this helps:



As for the question: replay only from a recording file.


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of N8CVW via groups.io <n8cvw.gbmi@...>
Sent: 07 October 2022 19:17
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] IQ 'Rewind/Replay' feature (?)
 
Hi Simon

I missed this until just now checking for follow-up ...

I do not find 'Navigator' , unless this refers to the whole user interface, ribbon, etc

but nonetheless, 

is the program (A) always buffering/FIFO-ing the IQ/waterfall (?), so it the last ?-X-? seconds are spooled for replay ?

or, is it necessary to (B) 'Record' and then play back ?

If it's the case (A) that the data has been captured and can rewind/play,

please say a bit on how to do this.

Thanks !

Paul
N8CVW

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N8CVW
 



that nudged me along a little ... my window was not 'full screen' and so the Navigator button was hidden


so once I activate the Playback window,

I do not see how to 'rewind' into a live/contemporaneous session ... (?)

I ca n select an IQ recording and play that ok, but I cannot figure out where to find the 'FIFO buffer' of what has just been heard (??)

is there a tutorial ?


N8CVW
 

reading the "data-recording" section of the documentation <...doh...>

I'm understanding that a recording must be initiated, and that there isn't already a 'live buffer' always being maintained 

is that correct ?


Bjarne Mjelde
 

You can start another session of Console to play live or record while you attend to the IQ files.
--
Bjarne Mjelde
Blog: arcticdx.blogspot.com - Twitter: @Arcticlistener


 


Simon Brown
 

Paul,

You can only loop when playing back a recording. I did think about a possibility of playing a loop while running live but never added it.

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of N8CVW via groups.io <n8cvw.gbmi@...>
Sent: 10 October 2022 14:31
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] IQ 'Rewind/Replay' feature (?)
 
Hi Bjarne

I'm not seeing how this answers my question as to whether there is already a 'recording' in progress,

'looping' in the background, that I can access any time I wish (?)

or, 

must I 'initiate a recording' in advance of being able to rewind and playback 

an analogy might be automobile dash cams that are constantly spooling video so if there's a crash you already have ? - 30 seconds ? of video preceding the event

I still haven't seen this question addressed

many thanks for your response

Paul
N8CVE





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N8CVW
 

I see ...

is there a way to turn on recording to 'always record'  as a wrap-around 

so that the oldest is over-written ?

and then if buffer size / duration is also an option, we're most of the way there 


Paul
N8CVW


Simon Brown
 

No,

Not at the moment.

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of N8CVW via groups.io <n8cvw.gbmi@...>
Sent: 11 October 2022 15:52
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] IQ 'Rewind/Replay' feature (?)
 
I see ...

is there a way to turn on recording to 'always record'  as a wrap-around 

so that the oldest is over-written ?

and then if buffer size / duration is also an option, we're most of the way there 


Paul
N8CVW

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Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.