Drums
Perhaps the most important element in a hip-hop track. DJ Premier, Pete Rock, Alchemist, Havoc, RZA, Marley Marl, Jay Dee, and Timbaland. What do all these producers have in common? Their thumping drums. Now imagine if all those beatmakers had used weak drums. Premier's "Come Clean" probably wouldn't be considered a classic, nor would Pete Rock's "T.R.O.Y". Compression is very much needed on drums, especially in the hip-hop world. What exactly does compression do to help? Fatten, thicken, louden, and sharpen. Deep, rumbly kick drums and sharp, snappy snares. Ah, the wonders of compression.
Threshold: -10 dB to -15 dB
Ratio: 6:1 to 8:1
Attack: 3ms
Release: 10ms
Knee: Hard
Gain: +5 dB to +7 dB
Percussion
Although not all hip-hop tracks contain, or need percussion, a lot of the newage pioneer beatmakers are using bongos, congas, triangles, steel drums, as well as other percussion instruments. Percussion doesn't require a lot of compression because usually, the percussion track rests behind the drum track. Bongos, congas, and the likes usually have an immediate popping sound that doesn't need compressing, so the attack should be set slower than drums.
Threshold: -3 dB to -7 dB
Ratio: 3:1 to 6:1
Attack: 5ms to 7ms
Release: 15ms
Knee: Hard
Gain: +2 dB to +4 dB
Вроде бы понятно - но это для живых барабасов и как говорится чистое поле для экспериментов в ту или иную сторону