Download Fohhn SoundLab

Fohhn SoundLab
If you are reading this brochure then you very probably are attending a Fohhn / IOSONO Immersive Sound / Yamaha
AFC3 demonstration in the Fohhn Soundlab. We hope you are enjoying the experience !
The Fohhn Soundlab is a relatively anechoic ‘dry’ space measuring 30m x 15m x 6m, used by the German loudspeaker manufacturer Fohhn to conduct electro-acoustic tests. But the Soundlab is also used as the home of two of the most
advanced sound systems in the world: the IOSONO Immersive Sound system by Barco, and the Yamaha AFC3 Acoustic
Field Control system, utilizing a Fohhn fixed-installed 3D loudspeaker system.
The Fohhn 3D loudspeaker system features 18 LX10 ceiling speakers, 24 LX100 side column speakers and 4 AS40
subwoofers. All speakers are individually driven by 12 Fohhn D4750DSP power amplifiers, receiving 46 audio channels
through MADI using two D.O.TEC Andiamo 32 channel MADI D/A converters.
The IOSONO Immersive Sound system is a powerful SSF (Synthesis of Sound Field) system, capable of creating audio
events in a 3-dimensional space using wave field synthesis rendered in real time by the IOSONO ICP100 audio processor. 3D mixes can be produced using IOSONO workspace software, or by the IOSONO plug-in software Spatial Audio
Workstation (SAW) exclusively for the Digital Audio Workstation Steinberg’s Nuendo. With a full production setup (Nuendo, SAW) the system is ready for mixing 3D soundfields, also many sound examples and complete demos are available
for playback in the SoundLab system.
The Yamaha AFC3 system is the latest generation of ASF (Assistance of Sound Field) system, capable of enhancing the
acoustic response of a space in real time using microphones and loudspeakers. AFC3 is a hybrid regenerative system,
offering acoustic enhancement responding to sound sources anywhere in the room, using high density convolution techniques to generate a natural acoustic response - even in the relatively dry acoustic environment of the Fohhn Soundlab.
The IOSONO system is connected to a Yamaha RMio64-D MADI/DANTE bridge, converting the MADI stream to a Dante network connecting to the AFC3 system. The AFC3 DSP frames have a 48 channel mixing matrix built in to merge
the IOSONO channels with the AFC3 channels before transmitting them through the MADI stream to the amplifier rack.
Because both systems can be used simultaniously, pre-produced 3D rendering can be combined with real time acoustic
enhancement to create true immersive and interactive 3D audio experiences. Because both systems use the same networked audio infrastructure and electro-acoustic components, systems can be offered at a very cost-efficient level.
BLOCK DIAGRAM
icp1 DPA3060 MY4-­‐FIR
MY16-­‐AUD
CONTROL PC AFC3-­‐FIR MY16-­‐AUD
REV (22) MIX (24) ATM350 AD8HR
MY8-­‐AE
Network switch 26 ports 1Gb CISCO SG300-­‐26
AFC3-­‐FIR REV (8) MY16-­‐AUD DANTE ER (16) MIX(24) MY16-­‐AUD
Speaker 1 -24
Analog Balanced
to Ring Speakers
AD/DA1
D.O.Tec Andiamo
IN
MADI IOSONO IPC100
Audio PC
Nuendo/SAW
ETH
WCLK
IN
MADI
OUT
RMio64-­‐D
ETH MAIN
OUT
MADI
Speaker 25 – 28
Analog Balanced
to Subwoofers
Analog
ETH AUX
IN
TCO
OUT
IN
MADI
OUT
AD/DA2
MADI D.O.Tec Andiamo
IN
OUT
MADI
Analog
Speaker 29 – 46
Analog Balanced
to Ceiling Speakers
TRANSDUCER PLACEMENT
REV spe kers (18 LX10 8 LX100)
ER spe kers (16 LX100)
REV s b woo erss (4 AS40)
REV icropho es (Se
ER icropho es (Se
Do ec (
heiser ME-­‐62)
heiser ME-­‐64)
42 2L)
Me s re e t poi t (E rthworks M20)
20 22 21 23 24 1 43 3 36 1 2 2 18 2 40 1 44 15 1 3 b 41 c 45 D 38 6 32 3 11 8 10 4 5 31 35 46 12 3 30 34 42 14 13 4 16 33 MEASURED REVERBERATION TIME (4-point average)
average RT
OFF
VOICE LIFT
STANDARD
LONG 1
LONG 2
LONG 3
4.00 63
0.97
1.15
1.10
1.90
1.45
2.04
125
0.67
0.68
1.25
2.01
1.17
2.28
250
0.49
0.74
1.61
3.54
1.82
2.37
500
0.40
0.56
1.40
3.15
1.93
2.10
1000
0.42
0.49
1.40
2.65
2.03
2.08
2000
0.35
0.44
1.40
1.83
1.72
1.89
4000
0.32
0.40
1.01
1.35
1.17
1.62
8000
0.34
0.46
0.56
0.92
1.06
1.55
RT (s)
3.50 3.00 OFF 2.50 VOICE LIFT STANDARD 2.00 LONG 1 1.50 LONG 2 LONG 3 1.00 0.50 0.00 50 63
125
250
500
500 1000
2000
40005000 8000
frequency (Hz)
MEASURED EDT (av. 500Hz, 1kHz, 2kHz)
EDT
OFF
VOICE LIFT
STANDARD
LONG 1
LONG 2
LONG 3
0.60 2.8
0.25
0.42
0.33
0.28
0.30
0.28
4.8
0.29
0.53
0.43
0.47
0.44
0.43
6.4
0.27
0.52
0.46
0.50
0.50
0.45
5.4
0.31
0.53
0.47
0.52
0.54
0.51
EDT (s)
0.50 OFF 0.40 VOICE LIFT STANDARD 0.30 LONG 1 LONG 2 0.20 LONG 3 0.10 0.00 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 distance (m)
MEASURED STRENGTH G (ref. 1m)
G
OFF
VOICE LIFT
STANDARD
LONG 1
LONG 2
LONG 3
12.0 2.8
14.17
14.50
14.48
14.30
14.34
14.32
4.8
11.03
11.65
11.36
11.24
11.24
11.26
6.4
9.53
10.40
10.14
9.92
9.95
9.87
5.4
10.58
11.34
11.05
10.90
10.95
11.34
G (dB)
11.5 OFF 11.0 VOICE LIFT STANDARD 10.5 LONG 1 LONG 2 10.0 LONG 3 9.5 9.0 4.00 distance (m)
4.50 5.00 5.50 6.00 6.50 7.00 press F1-F6 to select functions and presets.
press’ HOME’ to access the four pages.
1 -> 2 -> 3 -> 4 -> 1 ....
page 1
button
preset
RT(0.5/1k/2k av.
F1
F2
F3
F4
F5
F6
off
standard
long 1
long 2
long 3
voice lift
0.39s
1.4s
2.54s
1.89s
2.02s
0.5s
page 2
button
function
F1
F2
F3
F4
F5
F6
unmute AFC3 system
mute AFC3 system
adjust liveness level *
adjust subs level (don’t use) *
adjust center speakers (don’t use) *
no function
* opens new page, adjust with rotary dial, return by pressing ‘cancel’
page 3
button
preset
F1
F2
F3
F4
F5
F6
long 4 (RT not measured)
EC (test mode)
no function
no function
no function
no function
page 4: no active buttons