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Fading and white noise plugin ?


supermagnum
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Hello, I want to know if it is possible to make a plugin that adds signal fading and white noise to imitate the conditions heard on HF radio.

 

This will be interesting for those who are using morse code over internet (murmur/mumble), as it is usable for learning morse code.

More info about it here:

http://internetcw.weebly.com/

 

First, what is fading?

In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency. Fading is often modeled as a random process. The suns radiation also influences this process as it affects the layers in the earth's atmosphere who are reflecting radio waves.

 

Actual measurements of fading:

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2001RS002495

 

How to simulate HF ionospheric channels in mathlab:

https://www.mathworks.com/help/comm/ug/hf-ionospheric-channel-models.html;jsessionid=b893834ebb8a14d96b3bf317b2f9

 

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Not with the current state of the code.

 

I am working on a general-purpose plugin framework for Mumble (https://github.com/mumble-voip/mumble/pull/3743) though that will allow this kind of effect to be added as the audio streams are exposed to plugins (which can therefore mess with it).

 

In fact this is already done by the ACRE2 Mod for Arma 3. They have a branch including a Mumble plugin using this new system at https://github.com/IDI-Systems/acre2. Another early adapter of the plugin framework is fgcom: https://github.com/hbeni/fgcom-mumble

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18 minutes ago, Krzmbrzl said:

Not with the current state of the code.

 

I am working on a general-purpose plugin framework for Mumble (https://github.com/mumble-voip/mumble/pull/3743) though that will allow this kind of effect to be added as the audio streams are exposed to plugins (which can therefore mess with it).

 

In fact this is already done by the ACRE2 Mod for Arma 3. They have a branch including a Mumble plugin using this new system at https://github.com/IDI-Systems/acre2. Another early adapter of the plugin framework is fgcom: https://github.com/hbeni/fgcom-mumble

 

Thats interesting.

It's purpose is to work in company with:

https://github.com/Supermagnum/SuperKoch

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