Solidyne 462dsp User Manual
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Solidyne 462dsp User Manual

Fm 4-bands digital audio processor
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462dsp
/FM
4-bands digital audio processor
User's manual
3 d e F eb r er o 3 2 5 4 (1 4 2 9)
Bu en os A ir es - A r g en t i n a
Ph o n e: + 5 4 11 4 7 02 0 0 9 0
e- m a il : i nf o@ s ol i d yn ep r o.c om
fa x : + 5 4 1 1 47 0 2 23 7 5
w e b: www. S ol i d yn eP RO .c om
Last revision: Marzo, 2013

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Summary of Contents for Solidyne 462dsp

  • Page 1 462dsp 4-bands digital audio processor User’s manual 3 d e F eb r er o 3 2 5 4 (1 4 2 9) Bu en os A ir es - A r g en t i n a Ph o n e: + 5 4 11 4 7 02 0 0 9 0 e- m a il : i nf o@ s ol i d yn ep r o.c om...
  • Page 2 - SOLIDYNE 462dsp Página 2...

  • Page 3: Table Of Contents

    ADVICES ................4 2.1 A briefly history..............25 Chapter 1 - Quick installation guide ......5 Solidyne 462dsp psycho acoustic digital processor..27 2.2.1 Blocks diagram ..............27 1.1 Basic connection and settings..........5 2.2. 24 BITS @ 192 KHZ A/D CONVERTER........27 1.2 Diagram of general connections..........

  • Page 4: About This Manual

    Letter “i” within a circle that appears in this manual is for alerting to the user about the 462dsp processors are designed for rack montage information; advices and tips of extreme in standard racks of 19”, requiring 2 rack height importance.

  • Page 5: Chapter 1 - Quick Installation Guide

    AES-3 signal. 462dsp is able to do with the sound of your radio on the air… to begin we will explain briefly how to select the factory presets.

  • Page 6: Diagram Of General Connections

    The progressive bars show the action of several 1.3 Understanding the main screen processor stages. The name of the current Next you will see an overview on the 462dsp main program and state of inputs and outputs also screen. Later each processing stages and its appears on this screen.
  • Page 7 The slower it is the recovery, the processing sound soft and the music sounds natural. However, when they are fast, an increase of the loudness takes place, but the sound can becomes more “rough”. SOLIDYNE 462dsp – broadcast digital processor Page 7...
  • Page 8 THIS PAGE HAS BEEN LEFT INTENSIONALLY EMPTY broadcast digital processor - SOLIDYNE 462dsp Page 8...

  • Page 9: Chapter 2 - Advanced Installation

    • The connection of this cables are made as is standard. See the following table: 2.2 On mounting • 462dsp can be mounted in a standard rack of Balanced input/output connections: 19”; or can be used on a table. Rubber tops are provided with the unit.

  • Page 10: Digital Audio Connections

    JOG wheel is blocked. When the MICStart input is generator INCLUDES the preemphasis curve. opened, 462dsp returns to the previous program. This is thus since the 462dsp audio output DOES NOT INCLUDE preemphasis (only the MPX output “Console MICstart” uses a connector RCA type.

  • Page 11: Rds Coder (Optional)

    Solidyne-Magic RDS is required. This application by the European Broadcasters Union (EBU). It is included in the 462dsp CD-ROM, provided with allows adding to a conventional FM transmission, the unit. Using this tool you will be able to start to additional information by means of the inclusion of send RDS data.
  • Page 12 - SOLIDYNE 462dsp Page 12...

  • Page 13: Chapter 3 - Starting Up And Operation

    (15 to 29) and edit them. By default, user memories are “empty” (strictly speaking with a) On start up, the 462dsp shows by a few “flat” processing adjustments). You can create a new adjustment changing the values of each seconds the boot screen indicating the firmware parameter on the user memory;...

  • Page 14: Input Setup

    ONLY through the analogical input. This value must agree with the nominal output Digital only: Choose this option when the unit level of your console (in the case of Solidyne is connected ONLY through AES/3. Also the consoles this level is + 4 dBm).

  • Page 15: Output Setup

    3.2.2 OUTPUT SETUP The 462dsp processor is designed to fulfill this FCC Norm, being allowed to surpass 100% in no recurrent peaks slightly.
  • Page 16 Once defined, 462dsp will ask for the password whenever you try to accede to the main menu, but you don’t need the password to explore the program list and change the program on-air.

  • Page 17: Chapter 4 - Processing Adjustments

    (17 mS) and their recovery 4.2 DEFAULT PROGRAMS times are slow (540 mS and 181 mS respectively). 462dsp has 15 programs created by the Solidyne The adjustments of the density EQ compensate the balance between bands to obtain a flat response, comparing the engineers.
  • Page 18 The high bands also are something released, to obtain “brightness” and presence in trebles, something of extreme importance in POP music (usually strident, cheers and “up”). The “Bass Clipper” threshold is increased up to -3,5 dB. 09: POP IMPACT SOLIDYNE 462dsp - broadcast digital processor Page 18...

  • Page 19: User Programs

    • Please read carefully the description of each adjustments Default programs cannot be modified. To make made by Solidyne. Take it the time to listen to each your customized adjustment, look for that preset program and how each control affects to the sound on the that more approaches to the sound that you are air.

  • Page 20: Program Adjustments

    Not to listen the signal directly from the timbre (with soloists’ voices or instruments). For this audio output of 462dsp, but the air signal of the reason it's a critical adjustment and you must pay special trasmisor attention to this control.

  • Page 21: Hold

    The their gain according to the recovery time. theoretical foundations of this technique are explained in Chapter 6 of the 462dsp user's manual. Next a brief 4.4.2.5 Expander threshold review of multiband compression offers, and is detailed soon how different processing adjustments affect to Change the expander threshold;...

  • Page 22: Atack Times

    This time is called “recovery time”. produce the perception of dynamic range. In main In 462dsp the compression thresholds are the same lines; if the recovery is slow the compressor for all the bands, to not alter the sonorous balance.

  • Page 23: Chapter 5 Remote Control

    80 Hertz, 1 KHz, 6 KHz and 12 KHz. This equalization allows to obtain, 462dsp can be controlled from a PC, by means of still in conditions of high loudness, a contour of RS-232 connection.
  • Page 24 THIS PAGE HAS BEEN LEFT INTENSIONALLY EMPTY SOLIDYNE 462dsp - broadcast digital processor Page 24...

  • Page 25: Chapter 6 - Audio Prosessing For Broadcasting

    The concept of psychoacoustic processing is obtains that the ear accepts like of better quality simple essence, although complex than the original one, to certain modifications of accomplishment. It consists of analyzing the way SOLIDYNE 462dsp - broadcast digital processor Page 25...
  • Page 26 SOLIDYNE processors has distortion values smaller than 0,02%. Friendly interface 462dsp has many of its automatically fit functions, under control of the program of audio. But there are essential controls for "ing personalize ng personalize” the sound of its radius, that are fit by the user.

  • Page 27: Solidyne 462Dsp Psycho Acoustic Digital Processor

    2.2 Solidy ne 462dsp psycho acoustic digita l processor 2.2.1 Blocks diagram 2.2. 24 BITS @ 192 KHZ A/D CONVERTER 2.2.3 PEAK SIMETRIZER This module converts the analogical audio signal It is known that, by a particularity disposition of to digital audio, with 24 bits of resolution with a the vocal cords, the sonorous emissions that sample rate of 192 KHz.

  • Page 28: Subsonic Philter

    This does not happen in the field of the The expander works within a very wide range of psychoacoustics processors. signals, below a threshold value. That means it always expands within that range, for any level of SOLIDYNE 462dsp - broadcast digital processor Page 28...

  • Page 29: Gated Agc

    2.2.5 GATED AGC The processor Solidyne 462dsp has digital frequency splitters with Butterworth filters of 24 This stage constitutes a digital compressor AGC dB/octave that divides the program signal in type (Automatic Gain Control) with its constants five frequency bands: lows; low-middle; high- (slow) based on the program signal.

  • Page 30: Density Ecualizer

    One of the techniques most well-known and used After long investigation and numerous tests; to increase the energy of an audio signal is the 462dsp took a step more in the field of digital audio clipper. With its evolution, clippers; using a new system of 4 channels with...

  • Page 31: Low Pass 15 Khz Digital Filter

    Audio signal. This technique, created Engineering Society, Vol. 24 Nº 5. USA, 1976 Solidyne, allows obtaining a coder with excellent Oscar Bonello CONTROLLED features; with distortion 10 times below the PSYCHOACOUSTIC AUDIO PROCESSOR, 94th Audio audibility threshold and channel separation better Convention, Berlin March 1993 than 75 dB.
  • Page 32 SOLIDYNE 462dsp - broadcast digital processor Page 32...

  • Page 33: Chapter 7 - Measurrements

    Under this conditions, the audio output Hill Procedure: must be +4dbm. a) Select the program Nº 26. c) Repeat for the other channel. b) Take this output level as reference of maximum output level. SOLIDYNE 462dsp - broadcast digital processor Page 33...

  • Page 34: Stereo Crostalk

    By the other hand, no of the 4 bands must enter compression. c) Proceed to measure the total harmonic distortion (THD) It must be around 0.01 % d) Repeat for the other channel. SOLIDYNE 462dsp - broadcast digital processor Page 34...

  • Page 35: Sc100 Stereo Coder Fine Calibration Protocol

    PLEASE! IF YOU DON’T HAVE A GOOD KNOWLEDGE OF THE MATRIX STEREO THEORY OR DON’T HAVE THE Note: If you have a Solidyne VA16 modulation monitor or APPROPRIATE MEASUREMENT SET, DO NOT INTEND TO BELAR FMS-2 measurement set, you will be able to measure CALIBRATE THE STEREO CODER.

  • Page 36: Channel Separation

    Left and Right audio outputs of the BELAR modulation monitor. Use as reference Due to the high channel separation of the Solidyne 4 Vpp sine wave. Values better than 92 dBA must SC-100, the only way to recalibrate to original...

  • Page 37: Chapter 8 - Technical Specifications

    15 Khz digital low pass FIR filter, 60 dB rejection at 19 Khz Storage of Preset Settings 30 programs that can be changed on-air from PC computer using the 462dsp serial port RS232 serial port. It can be connected to USB bus with optional external adapter.
  • Page 38 Pilot Level Adjusted 7-12 % from rear panel preset control Pilot Protection 70 dB at 19 Khz RDS channel protection > 60 dB Pilot Stability +/- 0.05 Hz, 0 to 50 °C. SOLIDYNE 462dsp - broadcast digital processor Page 38...

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