Atmos Bubble and boom! Index measured, not opinion

Altered (2025)

DEMO 4.6 · BUBBLE 4.3 · BOOM 5.0 (with BEQ 6.2). Bass measured on the disc, DD+ Atmos. Directed by Timo Vuorensola. Science Fiction, Action.

Altered (2025) poster
4.3BUBBLE
5.0BOOM
BEQ 6.2

Altered ()DEMO 4.61 dead85 min · PG-13

Science FictionActionDisc · DD+ AtmosIMDb ↗
H0.4
S4.2
C8.6
bed
height
Front
31%
L97%
31%
R96%
100%
C99%
LFE
7%
LFE39%
Surround
11%
Ls61%
12%
Rs66%
16%
Lrs77%
16%
Rrs81%
Wide
1%
Lw3%
1%
Rw3%
Height
0%
Ltf0%
off
Rtf 
1%
Ltm13%
1%
Rtm13%
0%
Ltr1%
0%
Rtr1%

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

DEMO
4.6 / 10
Bubble
4.3 / 10
Boom, as released
5.0 / 10
Boom with BEQ
6.2 / 10
Measured release
Disc · DD+ Atmos · chart by mikejl
Deep bass peak, 10–30 Hz
-30.6 dBFS · with BEQ -26.5
Depth, 10–20 vs 30–60 Hz
-1.6 dB · with BEQ +6.2
Average level, 10–30 Hz
-61.1 dBFS · with BEQ -57.0
Minutes of deep bass
4 min · with BEQ 5 min at ≥ −30 dBFS
Filtered release
its BEQ restores up to 13.5 dB at 10–20 Hz
Chart scale read
-10 to -69.5 dBFS
Height uptime
2.3%
LFE uptime
23.1% (shown, not scored)
Dynamic range
12.8 dB
Channels used
15 of 16
Dead channels
Rtf
Genres
Science Fiction, Action
Tags
action, science fiction, science fiction action
Audio
DD+ Atmos
Released
18 Sep 2025
First listed
22 Jun 2026
Sources
PerceptualPro + BEQ
Render
older, corrected

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
97%
R
96%
C
99%
LFE
LFE
39%
Surround
Ls
61%
Rs
66%
Lrs
77%
Rrs
80%
Wide
Lw
3.3%
Rw
3.3%
Height
Ltf
0.1%
Rtf
unused
Ltm
13%
Rtm
13%
Ltr
0.7%
Rtr
0.9%
0:000:431:25

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

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