8.4BUBBLE
6.1BOOM
BEQ 7.9
Knowing (2009)DEMO 7.2
ThrillerDramaAdventureActionMysteryScience FictionDisc · AtmosIMDb ↗TomatometerRT 35%2025MetascoreMC 41
H4.5
S4.5
C10.0
bed
height
Knowing (2009)
DEMO 7.2 · BUBBLE 8.4 · BOOM 6.1 (with BEQ 7.9). Bass measured on the disc, Atmos. Directed by Alex Proyas. Thriller, Drama, Adventure, Action, Mystery, Science Fiction.
Front
57%
L55%
55%
R54%
100%
C85%
LFE
22%
LFE22%
Surround
26%
Ls38%
23%
Rs34%
17%
Lrs27%
16%
Rrs24%
Wide
19%
Lw35%
19%
Rw35%
Height
17%
Ltf27%
16%
Rtf28%
7%
Ltm17%
6%
Rtm15%
11%
Ltr21%
11%
Rtr19%
Bar and top figure — level against the film’s most active channel. Bottom figure — share of the runtime the channel carries signal.
- DEMO
- 7.2 / 10
- Bubble
- 8.4 / 10
- Boom, as released
- 6.1 / 10
- Boom with BEQ
- 7.9 / 10
- Measured release
- Disc · Atmos · chart by aron7awol
- Deep bass peak, 10–30 Hz
- -24.4 dBFS · with BEQ -19.5
- Depth, 10–20 vs 30–60 Hz
- -14.0 dB · with BEQ -3.6
- Average level, 10–30 Hz
- -52.2 dBFS · with BEQ -47.3
- Chart
- its scale clips the curve, so the peak is at least what is shown
- Filtered release
- its BEQ restores up to 16.3 dB at 10–20 Hz
- Tomatometer
- 35% · as of 22 Mar 2025
- Metascore
- 41 / 100 · as of 16 Nov 2025
- Chart scale read
- -5 to -59.9 dBFS
- Height uptime
- 21.3%
- LFE uptime
- 22.0% (shown, not scored)
- Dynamic range
- 37.5 dB
- Channels used
- 16 of 16
- Genres
- Thriller, Drama, Adventure, Action, Mystery, Science Fiction
- Tags
- action, disaster, mystery, science fiction
- Audio
- Atmos
- Released
- 19 Mar 2009
- 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
55%
R
54%
C
84%
LFE
LFE
22%
Surround
Ls
38%
Rs
34%
Lrs
27%
Rrs
24%
Wide
Lw
35%
Rw
35%
Height
Ltf
27%
Rtf
28%
Ltm
17%
Rtm
15%
Ltr
21%
Rtr
19%
0:001:012:01
Read from PerceptualPro's channel-activity graph, pixel by pixel. A lane marked unused never rises out of its line.