[Cin] Waveform generation using ffmpeg filters

[Igor BEGHETTO]

> To close the question, here’s an option how to generate a 440 Hz tone 
> for 2 channels: https://www.datafilehost.com/d/d67b7b18
> -- 
> Ugin. 

Ugin, if you want there is an alternative, without rendering.
Take a look at:
https://streamable.com/ohuof
So it can be more flexible to change the frequency when you want, if you 
needed.
Audio1 is the master and it is shared with Audio2. Then you can change 
only the seetings of the effect on Audio1; Audio2 effect is "child" of 
Audio1.

IgorBeg