Mixing signals

I’m looking for a way to add sinusoidal signals. I don’t want to mix them. There is a plethora of explanations around DSP technic on the Net but all the ones I have seen are too mathematic oriented. I confess I’m far to have the knowledge to understand everything.

For the time being I could have up to 16 signals maybe more later. They have the same duration and phase. Frequency and amplitude could be different over the time for each signal. Speed to get the result is not very important but I could write a plugin in case of.

Thanks for your lights

from current description i do not understand your achievement.
a recorded signal is more or less a timestamp and a value each measurement.

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