SDRPlay RSP1A + OpenSuse + CubicSDR + PulseAudio + Dream
Posted: Tue Feb 26, 2019 12:58 pm
Using that chain, I try to listen to DRM signals and I guess I do something wrong because I never succeed.
If I set CubicSDR to USB with a 10 kHz band pass, Dream decode the name of the programs and the parameters of the coding. Then, it is able to decode the program, very shortly, and then loose it.
The setup I use for Pulse Audio Control are as such:
• Playback: CubicSDR at 100%
• Recording: Dream receiver at 100% - Monitor of built-in audio analog stereo
• Output device: Headphones
• Input device: Monitor of Built-in Audio analog stereo
• Configuration: Profile: Analog Stereo Duplex
All my experiments have been made on the very powerful signal of Radio Romania, here in Belgium.
I guess, but could be wrong, that the problem comes from my configuration of the Pulse Audio Control. That is that whenever Dream receives and decode the DRM signal, the output of Dream is injected to it’s input and so, the result is that Dream cannot decode, mute, and at that point, is again able to decode the output of CubicSDR because the output of Dream and the one of CubicSDR are mixed. Furthermore, for the short time I receive the DRM, both the output of Dream and the one of CubicSDR are driven to the headphone socket, mixed together, ouputing a very uncomfortable sound.
I think that what should be achieved is to pipe the output of CubicSDR only to the input of Dream but cannot figure how.
If I select the I/Q mode of CubicSDR, I have a fixed 48k band pass filter and Dream cannot decode anything.
Could anyone help me ? Did someone been able to use this combination of programs to comfortably listen to DRM programs.
By the way, under Windows, using SDRUno and Vcable, there is no problem, things works smoothly. It’s hard for me to admit that what could be done easily under Windows could not be achieved under Linux !
My aim is to become able to listen to the DRM programs of All India Radio.
Thanks to anyone that could help me.
DA
If I set CubicSDR to USB with a 10 kHz band pass, Dream decode the name of the programs and the parameters of the coding. Then, it is able to decode the program, very shortly, and then loose it.
The setup I use for Pulse Audio Control are as such:
• Playback: CubicSDR at 100%
• Recording: Dream receiver at 100% - Monitor of built-in audio analog stereo
• Output device: Headphones
• Input device: Monitor of Built-in Audio analog stereo
• Configuration: Profile: Analog Stereo Duplex
All my experiments have been made on the very powerful signal of Radio Romania, here in Belgium.
I guess, but could be wrong, that the problem comes from my configuration of the Pulse Audio Control. That is that whenever Dream receives and decode the DRM signal, the output of Dream is injected to it’s input and so, the result is that Dream cannot decode, mute, and at that point, is again able to decode the output of CubicSDR because the output of Dream and the one of CubicSDR are mixed. Furthermore, for the short time I receive the DRM, both the output of Dream and the one of CubicSDR are driven to the headphone socket, mixed together, ouputing a very uncomfortable sound.
I think that what should be achieved is to pipe the output of CubicSDR only to the input of Dream but cannot figure how.
If I select the I/Q mode of CubicSDR, I have a fixed 48k band pass filter and Dream cannot decode anything.
Could anyone help me ? Did someone been able to use this combination of programs to comfortably listen to DRM programs.
By the way, under Windows, using SDRUno and Vcable, there is no problem, things works smoothly. It’s hard for me to admit that what could be done easily under Windows could not be achieved under Linux !
My aim is to become able to listen to the DRM programs of All India Radio.
Thanks to anyone that could help me.
DA