Re: [Freetel-codec2] Rade alternative training

2025-08-16 Thread glen english LIST
For anyone interested in Autoencoders, I can recommend chapter 17 of "hands on machine learning with sckit"  ISBN 978-1-492-03264-9 or David  you might be able to recommend a good online , accessable source  ? the following can provide some good starting points : https://medium.com/search?q=un

Re: [Freetel-codec2] Rade alternative training

2025-08-16 Thread david
Hi Glen, Yes indeed it can be trained to any channel you like. We've been doing some work for the VHF/UHF land mobile radio (LMR) space where it's trained to pass through analog FM radios (see freedv.org blog posts, search on BBFM). Greg - I suspect the final form of this technology arc will be

Re: [Freetel-codec2] Rade alternative training

2025-08-16 Thread glen english LIST
Greg, interesting though on speaker dependent fine tuned decoders (I think that's what you meant ?).  Would mean for you buddies you could store something different  and buy them another half dB on their transmit power bill. and suitable implementation for some other optimised band/propagation

Re: [Freetel-codec2] Rade alternative training

2025-08-16 Thread Greg Maxwell
There is also non-trivial channel specific DSP development likely needed too, not just ML training-- as the ML still relies on the receiver managing to sync and track the signal. Maybe a ML only adjustment for a different channel would be better than doing nothing, but it probably won't get partic

Re: [Freetel-codec2] Rade alternative training

2025-08-15 Thread glen english LIST
Hi David Have just read all the papers..   as i read it , (https://arxiv.org/pdf/2505.06671)  we could alternatively train the system for say aurora channel characteristsics on 2m , or rainscatter characteristics on 10 GHz and could expand or use different training sets for different propag