How to send magnitude data from FFT to buffer to client?

Hello!

I want to use magnitudes and phases data I got after using FFT on 
microphone input to modulate synth instances.

At first, I want to sort FFT bins by magnitude power, take first N
bins, normalize data, and then send it to N * 2 Busses (N for magnitudes 
and N for phases) these Busses I want to use for modulating synths with 
.asMap() method.

I tried to write this data to control rate Bus inside .pvcollect,
but it is not possible because Out.kr() needs a control rate signal.

Is there any possibility to this or some workaround how can I use FFT
data for synths modulation?

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