FWIW, I thought the voice quality was significantly better than I expected
when I was playing with the app earlier this week. Then again, I think I
was mentally expecting something only a bit better than 700D (maybe 2020
quality at best) considering that's what I use the most often on HF and all.

-Mooneer K6AQ

On Sat, Oct 24, 2020 at 5:29 PM David Rowe <da...@rowetel.com> wrote:

> Thanks Walter.  I was wondering about this statement on the M17 page:
>
> "M17 uses Codec2, written and developed by David Rowe. Codec2
> outperforms existing proprietary and patented (non-free) vocoders
> currently available."
>
> Do you (or others on this list) think Codec 2 at 3200 bits/ outperforms
> the codecs used for DMR/DStar and friends?
>
> - David
>
> On 25/10/20 10:01 am, walt...@k5wh.net wrote:
> > Here’s a few notes I sent to someone else earlier today.
> >
> >
> >
> >
> >
> > M17 is a very NEW project with a great deal of traction just recently.
> >
> >
> >
> > https://m17project.org/faq/  has some details about what is happening.
> >
> >
> >
> > This is a completely open source project using David Rowe’s Codec2 for
> > the encoding scheme. Much like the FreeDV for HF we have been using for
> > many years.
> >
> >
> >
> > They have modified the back-end around Dstar for the reflectors and
> > modules, using a very slightly modified version of the xlxd software for
> > building reflectors.
> >
> >
> >
> > Seems that the reflector count has risen from 3 to 12 in the past 3
> > days, so the word is still getting out to others.
> > https://m17project.org/reflector/
> >
> >
> >
> > There is no commercially available radio, but the TR-9 is the radio that
> > has been designed for it today. I understand they just got their alpha
> > pc-boards barely a week ago, and are still sourcing the components for
> > it. But there should be some RF available in a week or so.
> >
> >
> >
> > Jonathon Naylor has just updated the MMDVM code to support M17, and the
> > hotspot devices and the gateway components are being worked next.  His
> > early comment below.
> >
> >
> >
> > Hi All
> >
> > I've just finished the first round of developing M17 support for the
> > MMDVM. It is based on the current specification of M17, but it is a
> > dynamic protocol so it may well change before long. I've raised some
> > issue with the M17 developers which may mean changes to address those
> > issues.
> >
> > Currently M17 won't work with MMDVM hotspots based on the chip
> > modem/radio, only those systems based on MMDVM modem boards. In theory
> > the levels are correct and you should be able to load the modem code,
> > and the MMDVM Host from the M17 branch and off you go. I don't know if
> > it works as I have no M17 radios. Once we get hotspot support for M17
> > then I think it'll be possible to use them as low powered M17
> transceivers.
> >
> > On the networking side, it only connects to one M17 reflector, and that
> > is set in the ini file. Currently it's set to M17-USA module A. If
> > things move on with M17 then I will create a proper M17 Gateway program
> > with echo functionality to allow for dynamic control of the reflector,
> > but that is far off at the moment.
> >
> > I have tested my code against itself, and most of it seems to work, some
> > corners have not been tested yet, but they will be in due course.
> >
> > If anyone has an M17 transceiver and wishes to play with the code, I'd
> > be interested in what happens.
> >
> > Jonathan  G4KLX
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > So it is early in the development stages, but things are indeed moving
> > fast, as of just the ast few weeks.
> >
> >
> >
> >
> >
> >
> >
> > Walter/K5WH
> >
> >
> >
> > *From:* Adrian Musceac <kanto...@gmail.com>
> > *Sent:* Saturday, October 24, 2020 3:27 PM
> > *To:* freetel-codec2@lists.sourceforge.net
> > *Subject:* Re: [Freetel-codec2] Comments on the M17 project
> >
> >
> >
> > Hi Walter,
> >
> > Is there like a mailing list of the project or something?
> >
> > Adrian
> >
> > On October 24, 2020 4:13:56 PM UTC, walt...@k5wh.net
> > <mailto:walt...@k5wh.net> wrote:
> >
> >     Several of us have been working with M17 for the past week, using
> >     the Mvoice linux client, and it's working quite well with the
> >     reflectors they have in place today.
> >
> >
> >
> >     The number of reflectors have increased from 3 early last week to 9
> >     as of this morning, with a couple more that should show up today.
> >
> >
> >
> >     Since it uses the Dstar concept for reflectors, each one can support
> >     modules A-Z, so 26 different sets of qso's if it ever gets that
> >     busy. 😊
> >
> >
> >
> >     I am greatly looking forward to seeing the TR-9 radio on the air
> >     before too long, to really exercise the mode, as the MMDVM and
> >     hotspot code gets updated by Jonathan.
> >
> >
> >
> >     Once the gateway option is available, then cross-modes of DMR/Fusion
> >     etc..  to M17 should will ramp things up until more radios are
> >     available.
> >
> >
> >
> >     It's really exciting for me to see yet another opportunity for
> >     David's Codec2 to truly shine for us.
> >
> >
> >
> >     M17 is another great victory for the Open Source World!
> >
> >
> >
> >     Walter/K5WH
> >
> >
> >
> >     -----Original Message-----
> >     From: Al Beard <bear...@unixservice.com.au
> >     <mailto:bear...@unixservice.com.au>>
> >     Sent: Saturday, October 24, 2020 12:52 AM
> >     To: freetel-codec2@lists.sourceforge.net
> >     <mailto:freetel-codec2@lists.sourceforge.net>
> >     Subject: [Freetel-codec2] Comments on the M17 project
> >
> >
> >
> >     Hi all,
> >
> >
> >
> >     I was looking at the M17 project and noticing their discussion on
> >     callsign sending. Suggesting in 48 bits for Src and Dest, packing
> >     the characters as RT11 filenames used to do. (Digital PDP-11 of 1975)
> >
> >
> >
> >     What I notice in our HF mode 700D, it has quite poor data
> >     reliability particularly in the "Txt MSG" which is where the Src and
> >     Dest data may well be.
> >
> >
> >
> >     Adding 96 bits to every frame is in my view way too many bits.
> >
> >     In our current modes eg. 700D, could we sacrifice every tenth frame
> >     for source and destination?
> >
> >
> >
> >     Thoughts?
> >
> >
> >
> >     ---------------------------------------------------
> >
> >     Alan VK2ZIW
> >
> >     Before the Big Bang, God, Sela.
> >
> >     OpenWebMail 2.53, nothing in the cloud.
> >
> >
> >
> >
> >
> >
> >
> >     _______________________________________________
> >
> >     Freetel-codec2 mailing list
> >
> >     Freetel-codec2@lists.sourceforge.net
> >     <mailto:Freetel-codec2@lists.sourceforge.net>
> >
> >     https://lists.sourceforge.net/lists/listinfo/freetel-codec2
> >
> >
> >
> > _______________________________________________
> > Freetel-codec2 mailing list
> > Freetel-codec2@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/freetel-codec2
> >
>
>
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