Atmos Bubble and boom! Index measured, not opinion

Back to the Future Part III (1990)

DEMO 3.9 · BUBBLE 8.0 · BOOM 1.9 (with BEQ 6.8). Bass measured on the disc, Atmos. Directed by Robert Zemeckis. Adventure, Comedy, Science Fiction.

Back to the Future Part III (1990) poster
Front
33%
L40%
29%
R39%
100%
C93%
LFE
8%
LFE18%
Surround
15%
Ls27%
13%
Rs26%
12%
Lrs24%
11%
Rrs24%
Wide
0%
Lw0%
0%
Rw0%
Height
12%
Ltf22%
11%
Rtf22%
5%
Ltm17%
4%
Rtm16%
11%
Ltr21%
10%
Rtr21%

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

DEMO
3.9 / 10
Bubble
8.0 / 10
Boom, as released
1.9 / 10
Boom with BEQ
6.8 / 10
Measured release
Disc · Atmos · chart by aron7awol
Deep bass peak, 10–30 Hz
-41.2 dBFS · with BEQ -23.1
Depth, 10–20 vs 30–60 Hz
-24.3 dB · with BEQ +3.6
Average level, 10–30 Hz
-69.2 dBFS · with BEQ -51.0
Minutes of deep bass
4 min · with BEQ 13 min at ≥ −30 dBFS
Filtered release
its BEQ restores up to 39.4 dB at 10–20 Hz
Tomatometer
81% · as of 31 Oct 2024
Metascore
55 / 100 · as of 10 Nov 2024
Chart scale read
-10 to -70.3 dBFS
Height uptime
19.8%
LFE uptime
18.1% (shown, not scored)
Dynamic range
28.3 dB
Channels used
16 of 16
Genres
Adventure, Comedy, Science Fiction
Tags
comedy, science fiction, teen, time-travel, Western
Audio
Atmos, DTS-HD MA 5.1
Released
25 May 1990
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
40%
R
39%
C
93%
LFE
LFE
18%
Surround
Ls
27%
Rs
26%
Lrs
24%
Rrs
24%
Wide
Lw
0.2%
Rw
0.2%
Height
Ltf
22%
Rtf
22%
Ltm
17%
Rtm
16%
Ltr
21%
Rtr
21%
0:000:601:59

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

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