Transcript Key Technology – Audio Codec

DWX series
Send - Receive - Control
Digital wireless microphone system
Markus Warlich – Sony Europe
Historie
1st investigation and test system
1st VHF Wireless Mic System introduced
UHF Linear Wireless Mic System introduced
ECM-77B launched for Wireless TX
WL-800 Series Synthesized System
WRT-847 & WRT-860 introduced
Freedom Range launched
UWP launched
New UWP launched
1962
1972
1979
1985
1991
1995
1999
2003
2008
Analogue Wireless
Digital Wireless
2008
SONY PROFESSIONAL
2009
Digital Wireless
Plug on TX
launched
2010
2012
The Digital Era
“Digital Wireless Studio System”
Digital Wireless
DWM launched
Technology
•1st UHF PLL Synthesized Wireless Mic System.
•1st System to use direct 800 MHz VCO oscillation.
•1st Wireless system to achieve 282 selectable channels.
•1st To Use LCD displays on both TX’s & RX’s.
•1st To Use AA cell operation.
•1st Wireless mic to utilise 32KHz pilot tone squelch system
•1st System to store inter-modulation free groups.
•1st To introduce Space Diversity RF reception in WM systems.
•1st To realize 42 operational channels with a 36 MHz band.
•1st Wireless mic to indicate accumulated time. (Hrs & Mins).
•1st To use an A/D converter to drive AF display.
•1st High quality Code(24Bit/48KHz) for Digital wireless
•1st 2.4GHz Wireless Remote control System
Best
Audio
RF
Transmis
sion
Flexibility
Why digital?
Multi
Channel
Security
Control
RF Transmission
Multi Channel
Key Technology – Digital Modulation
High quality sound
Required sound quality level is increased by Digital transmission technology.
Stable transmission
Even if wireless condition becomes worse, stable transmission must to have.
Simultaneous multichannel operation
More channels are required under limited White Space.
Best audio
Stable
transmission
Simultaneous
channel
Latency
Latency
More Latency = time for error correction
Key Technology – Digital Modulation
Main cause of unstable digital wireless transmission
• Unexpected Noise
• Low RF level
• Multipath Fading
• Doppler Fading
What’s m-PSK/APSK modulation
PSK(Phase-shift keying) is mainly using for digital wireless transmission
under European Standard (ETSI 300 422) /200kHz BW（ Bandwidth ）
PSK is sending a data stream by Phase modulation
“0”
“1”
Amplitude :
Constant
Phase change 0 degree 1
Phase change 180 degree 0
Symbol rate (baut per second) = Bandwidth/roll off factor
Bw
Sr =
Rf
195kHz
150kps =
1, 3
Key Technology – Digital Modulation
modulation
BPSK
QPSK
Low
Reference
1bit/symbol
2bits/symbol
Low
Reference
256kbps
8PSK
16-APSK
32-APSK
64-APSK
constellation
Symbol rate
Bit rate
Robustness
Against
Fading, Weak RF
High
Error
Correction level
Low
High
3bits/symbol
> 384kbps
4bits/symbol
> 512kbps
5bits/symbol
6bits/symbol
> 640kbps
High
> 768kbps
Reference
Low
Reliability of data transfer is down as Symbol rate is up.
Reference
DWX
WiDIF-HP
Latency is increased as Symbol rate is up , because error
correction is complicated.
High
WiDif-HP is good balanced transmission codec which
realize high quality sound with reliable operation.
1. Sony original Audio CODEC with error compensation
2. Maximize audio data rate with minimum error compensation
3. True Diversity reception by using phase quality data
Key Technology – Digital Modulation
256kbps
π/4 QPSK (quadrature phase-shift keying)
Key Technology – Digital Modulation
DWX need only 20dB D/U
Analog need 40dB
Key Technology – Digital Modulation
No Third Order Intermodulation Problem
SONY PROFESSIONAL
500kHz between Channels
Key Technology – Digital Modulation
****** Successive TV-Channel ******
Best
Audio
Key Technology – Audio Codec
Best audio
Sony DWX-Series Audio Codec is optimised for
• best audio quality
• stable transmission
• low latency
Low latency
The system don‘t use any signal compression or companding
on the analog audio side. The codec use a clever bit shifting
and bit compression in the digital domain for saving
bandwidth.
The system is overall not lossless.
Stable
transmission
Key Technology – Audio Codec
0,2ms
1ms
0,3ms
256kbps
0,4ms
1ms
0,5ms
Key Technology – Audio Codec
DWX Frequency response
Key Technology – Audio Codec
Key Technology – Audio Codec
Impuls responce
<Signal Generator>
<Oscilloscope>
MODEL: Agilent 33220A
MODEL: YOKOGAWA DL1740
Serial No.: MY43004538
Serial No.: 12A205689
Signal Frequency: sin wave 4kHz
MONITOR(LEVEL): 20mV/div
Amplitude: 120mVpp (about -25dBu)
MONITOR(TIME): 50msec/div
Offset: 0V
Bandwidth: 20MHz
Burst Cycle: 10
Interval time: 3/6/10/15/20/30/40/60/100/200 msec
Key Technology – Audio Codec – Analog vs. Digital
Hybrid System
Analog System
DWX System
Generator Interval Setting 10 [msec]
Key Technology – Audio Codec – Digital vs. Digital
DWM-02, DWR-R02D
YELLOW ： Input Waveform
(Signal generator to DWM-02)
-40dBV unbalance
100Hz 1cycle
1000Hz
4000Hz
8000Hz
1cycle
5cycle
U.S. digital System
YELLOW ： Input Waveform
Key Technology – Audio Codec
Best audio
Summery
Sony DWX-Series Audio Codec is optimised for
• best audio quality
• stable transmission
• low latency
Best frequency response (flat 10Hz -22kHz)
Best impuls responce
Stable phase
….like a cable microphone
Stable
transmission
Low latency
Control
Key Technology – Cross Remote
UHF
Meta
UHF data
bidirectional
Key Technology – Cross Remote
UHF
470 – 862MHz
2,4GHZ
IEE 802.15.4
Key Technology – Cross Remote
DWR-S02D
SlotIn Receiver
UHF
470 – 862MHz
2,4GHZ
IEE 802.15.4
Key Technology – Cross Remote
TX Audio Input Peak
Batteiery remaining
TX Name
UHF & Meta data
TX LCF
TX ATT Gain
TX Active/Sleep
TX frequency
TX RF power
2,4GHz
TX ATT Gain/Mic /Line
TX Name
TX Battery Timer
TX Lock, LCF, SGN, 48V…
Key Technology – Cross Remote
• Audio transmission works without
Crossremote.
• Audio transmission and Crossremote
are independent from each other.
• System book In/out all devices
automaticly after first paaring
Tes
• With Crossremote you can control all
features an all devices
Security
Key Technology - Encryption
Encryption enables secure audio transmission
Metadata transmission
TX transmits battery status, RF level information, and even the performer’s name to RX
SONY PROFESSIONAL
Password (Multiuser, 48 Bit)
USB (Single, 56-Bit)
On Air (56-Bit)
Key Technology - Encryption
3 Level data serure transmission
1. Digital data scheme is Sony original (Not opened)
2. The transmission packet format is Sony original (Not
opened)
3. 56Bit encryption
DWX-Series - Line Up
DWX-Series products:
• 2 Receivers
• 2 Handheld transmitters
• 1 Pocket transmitter
• 1 PlugOn transmitter
• 1 Antenna distributer
• 2 Antennas for UHF
• 1 Remote antenna for RF-Remote (Cross Remote)
• 1 Control software for WinXP / WIN7
• 2 Adapters for non Sony camcorder or mobile user
SONY PROFESSIONAL
Receiver DWR-S01D and 02D
DWA-F01D
for every
mixer bag
DWA-F01D
DWA-01D for
camera back
mount
DWA-01D
DWR-S02D is the only
2CH working receiver
in Sony XDCAM
(Models after 2008)
Examples of PDW-700 4 channel with DWA-01D
2-channel SlotIn
SONY PROFESSIONAL
4-channel system
2-channel back mount
View Finder Display for PDW-700
Area for wireless microphone system status on VF display
Power off ( Blank )
(No indication channel and Icon)
RF level : (Weak -> High)
Muting or Error ( Gray out )
Battery alarm ( Blink )
AF PEAK INDICATION ( “P” mark )
“W” : Receiver : Connected
Blank : Receiver disconnected / Turn off
Receiving channel
1
DWX-Series – DWR-R02D Receiver
16ch stacking with active
antenna out
SW power
supply
DC In
Flexibility
DWX-Series - DWM-02 handheld microphone
CU-F32 CU-F31 CU-C31
DWX-Series - DWM-02 handheld microphone
Mount System
Manufacture/Brand
SONY (3)
SHURE (9)
SHURE mount (23)
Electro-Voice (6)
Lectrosonics (1)
HEiL Sound (2)
Telefunken (1)
Earthworks (1)
Neumann (3)
SENNHEISER
5000 mount (10)
SENNHEISER (7)
Audix mount (4) Audix (4)
Capsule Name
CU-C31
CU-F31
CU-F32
-
Wired Name
Variation
Black
Black
Black
Capsule Type
Electret Condenser
Dynamic
Dynamic
RPW184
KMS9
Black/Champagne
Electret Condenser
RPW124
RPW122
RPW120
RPW118
RPW116
RPW114
RPW112
RPW110
RE510 Capsule
PL80a Capsule
N/D967 Capsule
N/D 267a Capsu;e
HHC
RC 35 Capsule
RC 22 Capsule
M80-WH
WL40V
KK104-S
KK105-S
KK105 HD
ME 5009
ME 5005e
ME 5005
ME 5004
ME 5002
MD 5235
MD 5005
T367-CA OM7
T366-CA OM6
T365-CA OM5
T363-CA OM3
VP68
Beta87C
Beta87A
Beta58A
SM87A
SM86
SM58
PG58
RE510
PL80a
N/D967
HHCN/D267a
RC 35
RC 22
M80
SR40V
KSM-104
KSM-105
KSM-105
OM7
OM6
OM5
OM3
Black
Black
Black
Black
Black
Black
Black
Black
Black
Black
Black
Blackk
Black
Black
Black/Nickel/Gold
Black/Chrome
Black
Black/Nickel
Black/Nickel
Black/Nickel
Black
Black
Black
Black
Black
Black/Nickel
Black
Black
Black
Black
Black
Electret Condenser
Electret Condenser
Electret Condenser
Dynamic
Electret Condenser
Electret Condenser
Dynamic
Dynamic
Condenser
Dynamic
Dynamic
Dynamic
Condenser
Dynamic
Dynamic
Condenser
Condenser
DC Bias Condenser
DC Bias Condenser
DC Bias Condenser
Electret Condenser
Electret Condenser
Electret Condenser
Electret Condenser
Electret Condenser
Dynamic
Dynamic
Dynamic
Dynamic
Dynamic
Dynamic
Directivity
Cardioid
Super-Cardioid
Wide-Cardioid
Cardioid
Super-Cardioid
Omni
Cardioid
Super-Cardioid
Super-Cardioid
Super-Cardioid
Cardioid
Cardioid
Cardioid
Super-Cardioid
Super-Cardioid
Super-Cardioid
Cardioid
Cardioid
Cardioid
Cardioid
Cardioid
Hyper-Cardioid
Cardioid
Super-Cardioid
Hyper-Cardioid
Wide-Cardioid
Super-Cardioid
Super-Cardioid
Cardioid
Omni
Cardioid
Super-Cardioid
Hyper-Cardioid
Hyper-Cardioid
Hyper-Cardioid
Hyper-Cardioid
Frequency Response
60 Hz to 20 kHz
60 Hz to 18 kHz
70 Hz to 18 kHz
50 Hz to 20 kHz
40 Hz to 20 kHz
50 Hz to 20 kHz
50 Hz to 20 kHz
50 Hz to 16 kHz
50 Hz to 18 kHz
50 Hz to 18 kHz
50 Hz to 15 kHz
60 Hz to 15 kHz
50 Hz to 20 kHz
80 Hz to 16 kHz
50 Hz to 13 kHz
45 Hz to 15 kHz
40 Hz to 18 kHz
50 Hz to 18 kHz
30 Hz to 18 kHz
30 Hz to 40 kHz
20 Hz to 20 kHz
20 Hz to 20 kHz
20 Hz to 20 kHz
45 Hz to 19 kHz
40 Hz to 19 kHz
48 Hz to 19 kHz
50 Hz to 18 kHz
DWX-Series - DWT-B01/ Poket Transmitter
• 125gr including battery
• Mic/Line input
• OLED display
•1/10/50mW switchable
• 5,5 h AA Batteries (10mW)
•10,5 h AA rechargeable Batteries (10mW)
• 1KHz Testone
• LFC switchable (20-220Hz)
•Cross Remote
DWX-Series - DWT-P01 PlugOn Transmitter
• 245gr incl. battery
• Mic/Line input
• OLED display
• Cross Remote
• 1/10/50mW switchable
• 5,5 h (10mW)
• 1KHz testone
• LFC switchable
• 48V phantom power
•10,5 h AA Rechareable Batteries (10mW)
DWX-Series - WD-850A signal Splitter/Combiner
Can handle up to 64-channel
DWX-Series - AN-01 and RMU-01
AN-01 – 470-862MHz
RMU-01 - Remote Unit
For up to 82 transmitter
DWX-Series - Wireless Studio 3
System manager for all
features of a system.
Setup, control and
manage from your
Laptop.
No need to touch
receiver or transmitter
anymore.
DWX-Series – System Guide