Atmos Bubble and boom! Index measured, not opinion

Apocalypse Now (1979)

DEMO 5.4 · BUBBLE 4.2 · BOOM 6.9 (with BEQ 7.7). Bass measured on the disc, Atmos. Directed by Francis Ford Coppola. Drama, War.

Apocalypse Now (1979) poster
Front
42%
L68%
40%
R66%
100%
C89%
LFE
11%
LFE23%
Surround
10%
Ls28%
10%
Rs29%
11%
Lrs29%
10%
Rrs29%
Wide
0%
Lw0%
0%
Rw0%
Height
1%
Ltf1%
1%
Rtf1%
1%
Ltm1%
1%
Rtm1%
0%
Ltr0%
0%
Rtr0%

Bar and top figure — level against the film’s most active channel. Bottom figure — share of the runtime the channel carries signal.

DEMO
5.4 / 10
Bubble
4.2 / 10
Boom, as released
6.9 / 10
Boom with BEQ
7.7 / 10
Measured release
Disc · Atmos · Final Cut · chart by aron7awol
Deep bass peak, 10–30 Hz
-21.8 dBFS · with BEQ -18.5
Depth, 10–20 vs 30–60 Hz
+1.2 dB · with BEQ +4.5
Average level, 10–30 Hz
-52.9 dBFS · with BEQ -49.7
Minutes of deep bass
21 min · with BEQ 27 min at ≥ −30 dBFS
Filtered release
its BEQ restores up to 10.2 dB at 10–20 Hz
Tomatometer
91% · as of 23 Sep 2024
Metascore
94 / 100 · as of 16 Jun 2025
Chart scale read
-10 to -70 dBFS
Height uptime
0.9%
LFE uptime
23.1% (shown, not scored)
Dynamic range
25.1 dB
Channels used
16 of 16
Genres
Drama, War
Tags
action, adventure, drama, epic, horror, psychological drama
Audio
Atmos
Released
10 May 1979
First listed
4 Dec 2018
Sources
PerceptualPro + BEQ
Render
current

Channel by channel, through the film

One lane per speaker, the whole film from left to right. Bar height is how loud that speaker gets (square-root scale against this film's loudest moment, so quiet passages stay visible). The amber line under a lane marks the moments counted as playing, and the figure on the right is their share of the film. For the six height speakers that share is part of BUBBLE.

Front
L
68%
R
66%
C
89%
LFE
LFE
23%
Surround
Ls
28%
Rs
29%
Lrs
29%
Rrs
29%
Wide
Lw
0.4%
Rw
0.4%
Height
Ltf
1.2%
Rtf
1.2%
Ltm
1.1%
Rtm
1.2%
Ltr
0.3%
Rtr
0.4%
0:001:142:27

Read from PerceptualPro's channel-activity graph, pixel by pixel. A lane marked unused never rises out of its line.

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