[arm-allstar] PTT Delay idea

[john at qso.com]

Well then that answers that. I can wait. Thank you. 

Right now, my wife's voice on the ID'er is over deviated the first 200 ms as
my leveler's attack time is slow,
But at the same time recovery is slow so that normal conversation afterwards
doesn't sound compressed
like a commercial broadcast AM radio signal does. 

The network I'm on encourages people to hold the mike key down a full second
before they talk so that all the
entire network can key in order not to cut off their first words. It's an
issue.  There's usually plenty of time to knock the
leveler down before PTT. Was wanting to take advantage of that time.  Sounds
like your update will make this moot.

Oh, ALC is automatic level control. 

Again, thank you for all you do.

-----Original Message-----
From: ARM-allstar <arm-allstar-bounces at hamvoip.org> On Behalf Of "Doug
Crompton via ARM-allstar"
Sent: Tuesday, March 05, 2019 12:00 AM
To: ARM Allstar <arm-allstar at hamvoip.org>
Cc: Doug Crompton <wa3dsp at gmail.com>
Subject: Re: [arm-allstar] PTT Delay idea

John,

 I think you contradict yourself because you want audio to level before PTT
but you tell people to hold PTT for a few seconds before they talk. That
does not make sense. Then there would be carrier without audio. What is this
ALC? A good audio limiter/compressor should be almost instantaneous in
response. Are your levels really that wacky? Perhaps the users need to set
their levels better! You could delay PTT any amount you want with a rather
simple circuit but remember you are cutting off the beginning of the
transmission by that amount.

On a side note we will be introducing a new channel driver later this year
that will allow you to use a SW limiter/compressor with custom settings.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Mon, Mar 4, 2019 at 7:50 PM "John Griffith via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> I was wondering if there's a way to delay PTT for 200 milliseconds 
> (but
not
> the audio stream) so that my ALC can properly level out before 
> anything
is
> heard on the repeater?  The people on the repeater network I'm on are 
> pretty good about holding the key down for a second or 2 before 
> talking, so it would be a big deal.
>
> Another option I was thinking about would to have a tone or white 
> noise
or
> anything really.. keep the ALC circuit busy and leveled during times 
> of non-transmit.  Anyone have an idea?  I already have a burst of 
> noise at
the
> very beginning of the repeater ID, I would just want that to be during
the
> 200ms.
>
> John
> N7OKN
>
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