CTCSS for Voice Alert / AFSK stereo split

ge0rg / aprsdroid

APRSdroid - Geo-Location for Radio Amateurs

https://aprsdroid.org/

GNU General Public License v2.0

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CTCSS for Voice Alert / AFSK stereo split #289

Open ge0rg opened 3 years ago

ge0rg commented 3 years ago

When working in AFSK mode, the following might work:

[ ] implement stereo channel split for AFSK modulator, with separate left/right options for:
- [ ] AFSK
- [ ] PTT signal
- [ ] Voice Alert
[ ] decode CTCSS signal on incoming audio data
[ ] output audio with CTCSS to "the other" channel on TRRS, or to phone speaker
[ ] allow some sort of voice input from phone mic --> CTCSS encoded forwarding?

ksmarske commented 3 years ago

This looks awesome. Thank you Georg!

penguin359 commented 3 years ago

It's been a while since I looked at the audio interface on Android but seems like I remember that an external headset/mic would generally replace access to the on-phone speaker/mic, however, access to an external Bluetooth headset could still be selected. That might be another option to get audio in/out through APRSdroid to the radio as long as a small delay is OK.