Dolby Laboratories 737 - Manual (Page 33)

Model 737 Soundtrack Loudness Meter - Leq(m) Background
A-7
Figure A-4 Comparison of weighted and un-weighted Leq.
Figure A-5 compares the maximum peak level reached in each sample with the weighted
Leq(m) value. The slope of the line between the values is now proportional to the dynamic
range: the range between the average level and the loudest peaks on the soundtrack. It
is important to consider the dialogue level in these samples. The concept of associative
loudness (discussed above) is supported by the comparison of dialogue levels of
Spencer's Mountain (1963), an Academy mono film, with the dialogue level of Shine
(1996), a Dolby Digital release. The two films show identical Leq levels, confirming
the supposition that mixers set dialogue levels at a plausible point (associative loudness),
regardless of the format of the release.
S h in e R e el 5 (D )
G a kko u N o K a ida n (A )
E m p ire Traile r (D )
Tw ister Traile r (D )
P riso ne rs of the M oun tain Traile r (D )
M a rs A tta cks Traile r (D )
S laye r's R e turn (S R )
S tar W ars Tra iler (D )
S h in e Tra iler (D )
S T G e ne ra tion s R ee l 2 (D )
E vita Tra ile r (D )
Ind ie Tem p le o f D oo m (A )
S h in e R e el 4
S p en ce r's M ou nta in (M on o)
S h in e D ialo g (D )
L eq U n w eig h ted L eq
m
C C IR -w eig h ted
5.6 dB offset
1 00
9 5
8 5
9 0
6 0
6 5
7 0
7 5
8 0
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