iMac Ubunto 18.04 LTS some strange issue related with sound

f4exb / sdrangel

SDR Rx/Tx software for Airspy, Airspy HF+, BladeRF, HackRF, LimeSDR, PlutoSDR, RTL-SDR, SDRplay and FunCube

GNU General Public License v3.0

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iMac Ubunto 18.04 LTS some strange issue related with sound #199

Closed siralexbox closed 6 years ago

siralexbox commented 6 years ago

Sorry for my late reply on the other post. Ubunto 18.04 LTS When using SDRangel with HackRF to transmit in NFM if audio is not muted crashes SDRangel. If I have anything already running that used the capture audio source SDRangel freezes.

Made a small video trying to show the issue. video Wile making the video, I notice that if I enable sound recording the freeze happens.

f4exb commented 6 years ago

Are you running Ubuntu in a virtual machine on iMac? In any case you should set the interpolation factor to better match the required bandwidth for NFM modulator (48k) that is if HackRF sample rate is 2400 kS/s either:

16 for a 150k baseband
32 for a 75k baseband

siralexbox commented 6 years ago

No virtual machine, its running on the hardware, and its the only OS Tried playing around with parameters but always freezes is any audio is already playing in the computer.

f4exb commented 6 years ago

If you have issues with audio another thing to check is that pulseaudio is properly set up. Maybe you can check this: https://github.com/f4exb/sdrangel#notes-on-pulseaudio-setup It is about audio output but input should be similar.