i was checking some mastering document and i saw something about staged limitting. What is its benefit ? Is that better than normal limitting techniques ?
There's a Compressor by FMR audio, called RNC , this compressor has a "Super-Nice" Mode , while this is not a 100% limiter, a limiter is just a very fast compressor (in simple terms).
So , i have no exact reference to something called "Staged limiting" , but when we use the word "Staged" in audio we mean a process that's happening step by step , for example gain staging.
So what RNC does is routing 3 compressors to minimize the compression artifacts and smooth out the result.
I quote from the RNC quickstart Guide:
Super-Nice Operation — This proprietary mode layers three compressors together to minimize compression artifacts while still providing control over the signal. This is not an “auto” mode ...all parameter knobs still work to give YOU con- trol over the signal. The intended purpose of this mode is gentle compression of an entire mix (i.e., program compression) and compression of sound sources that must be very gently compressed, yet controlled
You should check out Flux's multi-stage limiter called Elixir: http://www.fluxhome.com/products/plug_ins/elixir-v3
"For truly delicate and fine processing tasks (mastering etc.) Elixir v3 presents a new innovative concept called Stages, providing the option to set the algorithm to perform the limiting processing in multi-stages, in order to achieve even more precise and natural sounding results.
Example: If the threshold is set to -3 dB and the ‘Stages’ parameter set to 3, the first stage will limit at -1dB, the second stage will limit at -2dB and the third will limit at -3dB, with analyzing performed in each of the three stages."