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BUG: White waterfall and no sound after playing back certain IQ files #1018

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vladisslav2011 opened this issue Dec 15, 2021 · 1 comment
Open

BUG: White waterfall and no sound after playing back certain IQ files #1018

vladisslav2011 opened this issue Dec 15, 2021 · 1 comment
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@vladisslav2011
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Attempting to play back some IQ files (rtl_sdr console tool recording in uint8_t format for example) leaves the DSP in incorrect state.

Steps to reproduce:

  1. Prepare "bad" IQ file. dd if=/dev/urandom of=gqrx_20211213_164230_103000000_1800000_fc.raw bs=128M count=1
  2. Start gqrx, choose hardware device, start the DSP, enable DC Remove in input control dock, check, that there is correct waterfall, spectrogram and audio output.
  3. Open "bad" file in IQ player, hit play. There should be no sound and white waterfall.
  4. Stop IQ playback.
  5. Close IQ player and start DSP with hardware source.

Expected behavior:
After switching back to hardware device, the gqrx should show correct waterfall and output sound

Observed behavior:
After switching back to hardware device, the gqrx still shows white waterfall and no sound.
Switching from nbfm to wbfm and back may help with sound. Turning the DC remove off may help with white waterfall.
2021-12-16 02-14-49
This was referenced Dec 15, 2021
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vladisslav2011 added a commit to vladisslav2011/gqrx that referenced this issue Dec 28, 2021
@vladisslav2011
Implement audio sample rate selection
ececbfe 
And some bugfixes.
Close gqrx-sdr#615
Close gqrx-sdr#1030
Close gqrx-sdr#1018
@vladisslav2011 vladisslav2011 mentioned this issue Dec 28, 2021
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@argilo argilo closed this as completed in e5e16cc Dec 30, 2021
argilo added a commit that referenced this issue Dec 30, 2021
@argilo
Merge pull request #1036 from vladisslav2011/fix_1030_1018
7b736c4 
Fix #1018
@vladisslav2011 vladisslav2011 mentioned this issue Jan 3, 2022
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@argilo argilo mentioned this issue Jan 8, 2022
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@argilo
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argilo commented Jan 8, 2022

Reopening for now, since the fix was reverted.

@argilo argilo reopened this Jan 8, 2022
@argilo argilo closed this as completed in a3f79da Jan 8, 2022
argilo added a commit that referenced this issue Jan 8, 2022
@argilo
Merge pull request #1048 from gqrx-sdr/revert-1036-fix_1030_1018
ae72d8a 
Revert "Fix #1018"
@argilo argilo reopened this Jan 8, 2022
@argilo argilo added the bug label Apr 28, 2023
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Fix white waterfall and no sound after playing back bad IQ file. vladisslav2011/gqrx
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@argilo @vladisslav2011