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Firstly I profess to know very little about the science of sound and I am struggling to find anyone who has done this with sox.

I am looking to build a VHF marine radio simulator on Windows and Linux using NodeJS and have identified sox as a possible way to both play and create the VHF radio or walkie-talkie effect. I am generating mp3 from a google speech recognition API and I can play that fine in the simulator with the app.

As an example this is what I would like to achieve.

Does anyone know the sox effects that could be used ? Or any other way ?

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I did this using a convolution effect. Basically, I passed a sweep tone through a narrow band FM radio (basically a CB), recorded it and used the result to generate an impulse response that represented the signal path.

This is a blog post that describes the process. Feel free to adapt to your own purposes.

https://www.greensideproductions.com.au/2013/01/04/creating-a-radio-effect-using-a-convolution-filter/

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