welle.io is a graphical program: simply start it. It looks for an SDR device automatically (see Supported hardware).
| Option | Description |
|---|---|
-h, --help |
Show the help. |
-v, --version |
Show the version. |
--dump-file <file> |
Records DAB frames (*.mp2) or DAB+ superframes with RS coding (*.dab). This file can be used to analyse X-PAD data with XPADxpert. |
--log-file <file> |
Redirects all log output to a file. |
--raw-file <file> |
Uses this raw file as input device, like the settings page does. See Raw files. |
--raw-format <format> |
Sample format of the raw file: auto, u8, s8, s16le, s16be, cf32 (default: auto). |
--smoke-test <report> |
Plays every service of the raw file with temporary settings, writes the result to a JSON file and quits. Exit code 0 if every service played. |
--smoke-timeout <seconds> |
Time limit of the smoke test (default: 120). |
| Keys | Action |
|---|---|
| F1–F12, 1–9, 0, Ctrl+1–9, Ctrl+0 | Play station no. x of the station list: 1 for station 1, 0 for station 10, Ctrl+1 for station 11 … |
| S, Media Play, Media Stop, Media Pause, Media Play/Pause | Start/stop playback |
| N, Media Next | Play the next station of the list |
| P, Media Previous | Play the previous station |
| M, Volume Mute | Mute/unmute |
| Ctrl+Up, Volume Up | Volume up |
| Ctrl+Down, Volume Down | Volume down |
The best help for a weak ensemble is a better antenna or antenna position: outdoors, high up, vertical and pointing to the transmitter.
With a stationary antenna, welle.io can also receive weaker signals: in the settings, switch on Expert mode and set Demodulator to Coherent. It needs up to 2 dB less signal for the station list and the audio. Use Differential (the default) in a car or with a moving antenna: there the coherent demodulator receives worse. Details: Coherent demodulation.