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New VATSIM Codec


Simon Irvine

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Not much to say really apart from there will be true VHF simulation coming to VATSIM soon...I'll just leave this here.

 

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20 Comments


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Andrew Macleod

Posted

Unbelievable differnace. Well done whoever is involved. Great job!

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Alex Ashley

Posted (edited)

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Well done to all the team for their work  - can't wait to see it!

Edited by Alex Ashley
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George Peppard

Posted

Wow - well done to the people involved! Can’t wait to hear this on the network!

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Adam Farquharson

Posted

sounds amazing. Wait, does this mean people will be able to tell I have a shocking mic?

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James Gibson

Posted (edited)

What would be cool is to only hear one person when someone is talking or block transmissions like real world! But good work ?

Edited by James Gibson
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William Grimsley

Posted

Is there a way for people to sign up to beta test this? If so, I would be interested in doing so. ?

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16 hours ago, James Gibson said:

What would be cool is to only hear one person when someone is talking or block transmissions like real world! But good work ?

This is already implemented. I'm sure further features will be promulgated as time goes on and development continues. 

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Andrew Gransden

Posted

What is the lowest internet speed required? Has it been tested with 1-3 Mbps?

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James Gibson

Posted

On 30/09/2018 at 13:21, James Horgan said:

This is already implemented. I'm sure further features will be promulgated as time goes on and development continues. 

I heard two people talk over each other in the video but anyway! Still a massive improvement

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Fraser Cooper

Posted

1 hour ago, James Gibson said:

I heard two people talk over each other in the video but anyway! Still a massive improvement

You will hear 2 pilots talk over 1 another on frequency IRL. You will hear the blocking tone with the occasional legible word here and there.

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William Grimsley

Posted

17 hours ago, Andrew Gransden said:

What is the lowest internet speed required? Has it been tested with 1-3 Mbps?

I would assume the same speed as before...

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Although new voice has slightly higher bandwidth requirements we are still talking only a marginal amount that would only be noticeable if we were still on dial up modems.  1Mbps is still plenty overkill.  

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Oliver Parker

Posted (edited)

Well done gents, long time coming, people should be very grateful and will owe you a lot for this. Oh Dan, what a wonderful choice of example controller!

Edited by Oliver Parker
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Simon Kelsey

Posted (edited)

On 02/10/2018 at 18:25, James Gibson said:

I heard two people talk over each other in the video but anyway! Still a massive improvement

As Fraser mentions - in real life you can talk over another transmission as heard in the video. This is exactly why aviation radios are AM and not FM: if they were FM then the selectivity of FM receivers means it would indeed be 'strongest signal wins' and you'd only hear one person at a time.

This would be bad, because it would mean an open mic could block the whole frequency, or a crossed transmission would block out an instruction (possibly to another aircraft) entirely and there would be no indication to anybody that the transmission had been blocked. That, as you can imagine, would be a Bad Thing (and on VATSIM would we really want a situation where someone with a stuck PTT could prevent anyone else from transmitting?)

The use of AM means that at least someone will be aware of blocked transmissions and it might even be intelligible to the intended recipient depending on how close they are to the transmitter.

On 02/10/2018 at 14:08, Andrew Gransden said:

What is the lowest internet speed required? Has it been tested with 1-3 Mbps?

The average audio upload bitrate is I think about 8kib/s at the moment, which is less than most Teamspeak or Discord situations.

Edited by Simon Kelsey
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Oliver Parker

Posted (edited)

Haven't been on in a while but has this been implemented yet? Or is it taking longer than Brexit?

Edited by Oliver Parker
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