Re: LF: Re: 477 NOV What Modes ?

[M0FMT <m0fmt@yahoo.co.uk>]

Hi Stephan

 

That is not entirely what had in mind but impressive ..... I want one!

 

73 es GL Pete M0FMT IO91UX

From: Stefan Endemann <dj2sea@darc.de>
To: rsgb_lf_group@blacksheep.org
Sent: Friday, 21 December 2012, 13:02
Subject: Re: LF: Re: 477 NOV What Modes ?

Hi Pete and Geri,

Codec2 might be a viable medium term solution for real-time compression
of speech for narrow band communication (http://codec2.org/).

There is also an interesting presentation about Codec2 by David Rowe on
youtube: http://www.youtube.com/watch?v=KsywWf8dQgU

73 Stefan, DJ2SEA

-------- Original Message  --------
Subject: Re: LF: Re: 477  NOV  What Modes  ?
From: M0FMT <m0fmt@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org <rsgb_lf_group@blacksheep.org>
Date: Fri Dec 21 2012 13:37:25 GMT+0100

> Hi again Geri
> 
> I remember the SM stns using normal SSB on a beacon QRG 505 +/-. a
> couple of years ago but not compressed.
> 
> I was thinking that there must be a method or algorithm that has a look
> up table of "diphones" and is able to utilise the repetitive sounds,
> spaces and diphones of the language in use (hard luck German has over
> 2500 Spanish has 800). Thus a real time narrow band communication
> channel carrying only pointing data would result. The outcome will
> probably be a cross between Donald Duck and Stephen Hawking in a channel
> of a few Hz? Any mileage (sorry Kilometreage) in the idea?
> Just thought to make the sound like the sender there could be a real
> time slowed down session of key words to build the diphone library prior
> to the contact so the following QSO would sound nearly normal. This
> library would build over time so the system training would only need one
> session for a particular stn then on future QSOs a call sign entry would
> only be needed...... better stop now I am scaring myself. Maybe get it
> all on one PIC...... not?
> http://en.wikipedia.org/wiki/Speech_synthesis
> 
> 73 es GL Pete M0FMT IO91UX
>
>    *From:* Holger 'Geri' DK8KW DI2BO W1KW <geri@dk8kw.de>
>    *To:* "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org>
>    *Cc:* "<rsgb_lf_group@blacksheep.org>" <rsgb_lf_group@blacksheep.org>
>    *Sent:* Friday, 21 December 2012, 11:16
>    *Subject:* Re: LF: Re: 477 NOV What Modes ?
>
>    Markus and I once had a successful "Slow SSB" QSO on 137 kHz years
>    ago in our German 800 Hz bandwidth limitation. We slowed down normal
>    voice four times, transmitted it over SSB and expanded it again by
>    reversing the process ... using the full 7 kHz would make a fine AM
>    signal, indeed ... perhaps even a low deviation FM signal would do?
>
>    Be creative, by 73
>
>    Geri, DK8KW
>
>    m
>    On 21.12.2012, at 10:34, "Chris" <c.ashby435@btinternet.com
>    <mailto:c.ashby435@btinternet.com>> wrote:
>
>>    All modes, as per the licence and 136/7 band.
>>    Roger, yes, a couple of us are thinking about some QRP AM across
>>    town (subject to non QRM to other locals), and why not?
>>    Some sort of agreed band plan would be helpful ASAP as well.
>>    My two NoVs were dated 20th. December, but it does say 'Date of
>>    Issue', which isn't the same as 'Date of Commencement', 'With
>>    Effect From' or whatever. It was clear from the Ofcom site where
>>    the link was that the NoV comes into effect on 1st. January.
>>    Vy 73, Chris, G4AYT, Whitstable, Kent.
>>
>>        ----- Original Message -----
>>        *From:* Graham <mailto:g8fzk@g8fzk.fsnet.co.uk>
>>        *To:* rsgb_lf_group@blacksheep.org
>>        <mailto:rsgb_lf_group@blacksheep.org>
>>        *Sent:* Thursday, December 20, 2012 5:04 PM
>>        *Subject:* LF: 477 NOV What Modes ?
>>
>>        Starting  1/1/13  .. but    What Modes  non  listed , only 
>>        the  power ??
>>         
>>        G..
>>
>
>
>     
>