NOTA:Un paper más completo basado en esta teoría está publicada en inglés en el
Journal
of the Audio Engineering Society,
O.Bonello, March 2007 (www.aes.org)
SPECIFICATION
Solidyne
562dsp
Analog
Input
600/10
K balanced XLR 50 dB CM Rejection 20-15 Khz. Input level selected by
software in 1 dB steps.
Sigma-Delta converters 24 bits / 192 Khz
Digital
Input
Optional
AES-3 digital balanced input Z=110 ohms. Automatic selection of 32,
44,1, 48 & 96 Khz with sample rate converter (128 dB Dynamic Range,
-117 dB THD) to avoid jitter
From
2 vpp to 5.5 vpp in 15 steps selected by software
from LCD screen
Processing
Technology
DSP
(Digital Signal Processing)
Total CPU power 2.700 MIPS
MPX
Post-Processing
SuperModulation
exclusive Solidyne technology, at 608 Khz oversampling. Fast clipper DC-10
Mhz wideband channel to avoid audible artifacts
Frequency
Response
20-15.000
Hz +/-0.25 dB. Flat
mode XLR out or digital AES-3 Out. Output without pre-emphasis
Harmonic
Distortion (THD)
THD
below 0.005 % (30-15 Khz, Flat Mode)
Noise
Dynamic
Range= 95 dBA
Stereo
Separation
75
dBA @ 30-15.000 Hz
Subsonic
Filter
Chebyshev
FC=20 Hz; 25 dB rejection at 10 Hz
Asymmetry
Canceling
Phase
processing technology with Kahan-Bonello algorithms. Cancelling Factor=8:1
Linear
Expander
Range=20
dB Attack time < 1 mS. Release: 200mS
Gated
Wide-band AGC
Range=30
dB. Attack / Release time & Treshold controlled from LCD screen
Multiband
Compressors
DSP
controlled by software. Five Bands, Crossover= 24dB/oct Max compression
= 30dB. Slope = 10:1
Compressors
Attack/Release Time
Software
controlled by user from LCD screen. Attack and Release controlled by
separate.
IM
Canceled Clipper
IM
canceling factor : greater than 30 dB below 250 Hz
Fast
Clipper
Absolutely
alias free using DC-10 Mhz bandwidth channel
Audio
Equalizer
Four
bands audio equalizer with 20 dB range at the output of multiband compressors
Space
Effects Processing
562
has the SRS Labs, California, license for SRS WOW technology (3D space,
super bass, sound elevation)
Super
Modulation
MPX
processing for stereo interleaving, allows for 150% L & R audio level
at 100% modulation
Low
pass filter
15
Khz digital lowpass FIR filter, 50 dB rejection at 19 Khz
Storage
of Preset Settings
30
programs that can be changed on-air from PC computer using the 562 serial
port
RS-232
PC control
RS232 seriel port. It can be connected to USB bus with optional external
adapter. Optional Ethernet bus connection
Ethernet
conection
Optional
RJ45 port, for direct connection to Ethernet. Allows the 562dsp to be
remote controlled by direct connection to Internet modem.
RDS
Encoder
Optional
built in RDS encoder
AM
& FM compatible
The
user is able to insert two socket mounted ICs to change betwen AM and
FM modes.
Stereo coder is a separate module
LCD
Display
Blue
color, LCD display with backlight. Graphic type
Resolution 240 x 64
Processing
Bands and stages
Five
processing bands
Nine processing stages
Power
90/127V
and 190/230V; 50/60 Hz, selectable from rear panel
Dimensions
483
mm Wide 240
mm Deep, 88
mm High
562dsp/
AM audio processor
This
is a top of the line unit for AM transmitters that offers:
One
balanced stereo output (20 Hz - 15 KHz) for Internet streaming
or Hi-Fi recordings
Two
independent balanced analogical outputs for A.M. transmission
A.M.
TX outputs has NRSC1 equalization and low-pass cutoff
filter, commutable between 7 kHz & 5 kHz. Both A.M. outputs allow
asymmetric modulation to increase the power and coberture of the emissions.
While the negative modulation keeps always at 100%, the positive one can
vary digitally between 100% and 150%, controllable from LCD screen. The
advanced asymmetric clipping system with double stage of Log clipping,
an invention of Solidyne, allows to increase to the transmitted power.
The
562dsp/AM fulfills standard NRSC-2 of spurious irradiation
in A.M. 562dsp/AM/AES
- DIGITAL AM
This model is oriented to the transmission of digital A.M. in simulcast
using IBOC or DRM technology. 562dsp/AM/AES has digital
AES-3 input / outputs for direct connection to the digital transmitter,
with a bandwidth of 15 KHz in stereo.
SC-100
Digital Stereo Generator
16x Oversampling Very
Low Distortion
Audio
Input Impedance: 600/5 kOhms
Audio
Input Level: 1,5 V rms for 5 Vpp at MPX out @ 400 Hz
MPX
Output: Differential output, BNC connector, floating ground 50 ohms
Allows
45 dB canceling buzz & noise due to ground loops
Signal
to Noise Ratio: 95 dBA or better, Ref 100% modulation.
Stereo
Separation: 75 dB at 400 Hz / > 70 dB; 30-15.000 Hz.
Crosstalk:
Main to sub & sub to main due to amplitude and phase nonlinearities
of left and right channels, 30-15.000 Hz; 65 dB minimum, below 100% modulation.
38
kHz Suppression: 75 dB minimum below 100% modulation.
57,
76 and 95 kHz Suppression: 75 dB minimum below 100% modulation.
76
kHz Sideband Suppression: 75 dB minimum below 100% modulation.
Pilot
Level : Adjusted 7-12 % from rear panel preset control
Pilot
Protection: 70 dB at 19 Khz
Pilot
Stability: +/- 0.05 Hz, 0 to 50 °C.
Output Spectrum as seen at Tektronix 5L4 N The
high spectral purity surpases all the units you can find at the market
SPECIFICATION
Optional
RDS Encoder
RDS/RBDS
signal
Conforms
to CENELEC EN50067
RDS signal bandwidth
+/-
2.4 kHz (50 dBc)
Spurious
suppression
>90
dB
Harmonics
suppression
>
80 dB
Clock
reference
pilot
tone
19
kHz pilot PLL lock bandwidth
+/-
2 Hz
Data
connector: RS-232
D9
bidirectional
Data
speed software switchable
1200-9600
kbps
Communication
mode
8
data bits, no parity, 1 stop bit
EEPROM
memory capacity
32
KB
Supported
services
PI
Program Identification, M/S Music/Speech, PS Program Service,
PIN Program-Item Number, PTY Program Type, ECC Extended
Country Code, TP Traffic Program, RT Radiotext, AF
Alternative Frequencies, TDC Transparent Data Channels TA
Traffic Announcement, IH In House Applications, PTYN Program
Type Name, ODA Open Data Applications, DI Decoder Identification,
CT Clock-Time and Date, EON Enhanced Other Networks information