Editing IQ files

crvee8
Posts: 2
Joined: Wed Dec 09, 2020 10:13 pm

Editing IQ files

#1

Unread post by crvee8 »

Hi,
I was wondering if there is any way of editing IQ files? If I record large amounts of data over several hours and I want to keep certain parts of the file is there anyway of editing the file with some software to do this rather than having to keep the whole file.
Thank you

pauldbnut
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Re: Editing IQ files

#2

Unread post by pauldbnut »

These old posts may be of interest.

https://sdr-radio.groups.io/g/main/mess ... ,0,5705667

https://sdr-radio.groups.io/g/main/mess ... ,0,5707800

Sadly, I don't know how to be nice enough to Simon :(
Paul White (Grumpy Old Git)

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Simon G4ELI
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Re: Editing IQ files

#3

Unread post by Simon G4ELI »

crvee8 wrote: Wed Dec 09, 2020 10:23 pm Hi,
I was wondering if there is any way of editing IQ files? If I record large amounts of data over several hours and I want to keep certain parts of the file is there anyway of editing the file with some software to do this rather than having to keep the whole file.
Thank you
Have you seen the Data File Editor? It'll be in 3.0.26.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

crvee8
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Joined: Wed Dec 09, 2020 10:13 pm

Re: Editing IQ files

#4

Unread post by crvee8 »

Thanks Simon, I look forward to the release of 3.0.26

pauldbnut
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Re: Editing IQ files

#5

Unread post by pauldbnut »

Hi, Simon, completely missed that item in your Release Notes.
It's a beautiful tool, thanks ever so much.
Paul White (Grumpy Old Git)

pauldbnut
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Re: Editing IQ files

#6

Unread post by pauldbnut »

Just to report I tried the Data File Editor. So easy to use, perfect results.
From the perspective of the SDR community, I can't see any reason to prefer plain audio files over a single-channel I-Q.
Interesting too that non-SDRC formats are converted to SDRC.
Paul White (Grumpy Old Git)

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Simon G4ELI
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Re: Editing IQ files

#7

Unread post by Simon G4ELI »

pauldbnut wrote: Thu Dec 17, 2020 12:52 am Just to report I tried the Data File Editor. So easy to use, perfect results.
From the perspective of the SDR community, I can't see any reason to prefer plain audio files over a single-channel I-Q.
Interesting too that non-SDRC formats are converted to SDRC.
Yea, another tester :) . An advantage of saving IQ is later analysis with improved DSP. I hope 2021 will be the year when I write some decent DSP to dig signals out of the noise.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

pauldbnut
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Re: Editing IQ files

#8

Unread post by pauldbnut »

"I hope 2021 will be the year when I write some decent DSP to dig signals out of the noise."
That sounds promising!

I'm a bit taken aback by binaural's intrusive noise under poor reception conditions. Seems "harsher" than my Gnu Radio flow.
Probably means yours is doing a better job, so I tried various noise reduction without any real improvement.
But it's early days and there is plenty more to try :).
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Simon G4ELI
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Re: Editing IQ files

#9

Unread post by Simon G4ELI »

pauldbnut wrote: Thu Dec 17, 2020 1:16 pm "I hope 2021 will be the year when I write some decent DSP to dig signals out of the noise."
That sounds promising!

I'm a bit taken aback by binaural's intrusive noise under poor reception conditions. Seems "harsher" than my Gnu Radio flow.
Probably means yours is doing a better job, so I tried various noise reduction without any real improvement.
But it's early days and there is plenty more to try :).
Hi,

This simply applies a filter so that LSB is in the left ear, USB in the right. Maybe there's something else I can do later, I'll have to check.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

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