02.07.2013 Views

B. Sistem Pencernaan pada Manusia

B. Sistem Pencernaan pada Manusia

B. Sistem Pencernaan pada Manusia

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

2) A : a = 1 : 2 D =<br />

256<br />

A = × a = × 220<br />

= 220 Hz = × 220<br />

D : A = 27 : 40 D = 148,5 Hz<br />

Jadi nada D adalah 148,5 Hz<br />

3) a 3 : a = 2 3 : 1 c 3 = a 3<br />

a 3 = 8a = × 8 × 440<br />

= 8 × 440 = 24 × 88<br />

= 3.520 Hz = 2.112 Hz<br />

c3 : a3 = 24 : 40<br />

3 : 5<br />

Jadi frekuensi nada c3 adalah 2.112 Hz<br />

5c3 = 3a3 Perbandingan nada-nada lainnya dengan nada c disebut interval nada.<br />

d : c = 27 : 24 = 9 : 8 (sekunder)<br />

e : c = 30 : 24 = 5 : 4 (terts)<br />

f : c = 32 : 24 = 4 : 3 (kuart)<br />

g : c = 36 : 24 = 3 : 2 (kuint)<br />

a : c = 40 : 24 = 5 : 3 (sext)<br />

b : c = 45 : 24 = 15 : 8 (septime)<br />

c 1 : c = 48 : 24 = 2 : 1 (oktaf)<br />

Interval penting:<br />

5 : 4 : 3 : 2 : 1<br />

terts kuart kuint oktaf<br />

2<br />

2<br />

11<br />

88<br />

IPA SMP/MTs Kelas VIII

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!