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DaySequerra iLC 2ST User Manual

Dual stereo broadcast loudness controller
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Summary of Contents for DaySequerra iLC 2ST

  • Page 1 2ST User Manual...
  • Page 2 We design and build all of our DaySequerra products to be completely reliable and easy to use, so you can concentrate on producing great sounding broadcasts, not struggling with complicated equipment or difficult to use product manuals.

  • Page 3: Table Of Contents

    • 10/100 Base-T Ethernet interface for long-term logging and field software • updates All rights reserved DaySequerra Corp. Copyright 2011. All logos and trademark used herein are the property of their respective owners. Specifications subject to change. iLC2ST User Manual...

  • Page 4: Important Safety Information

    Service Information The DaySequerra ILC2ST contains no user serviceable components inside the unit. Please contact DaySequerra for repair and upgrade information. In the event that your unit needs to be returned to the factory, contact us for a return authorization number.

  • Page 5: Technical Specifications

    Technical Specifications 2 AES-3 Stereo Inputs Inputs Optional HD/SDI Input and pass-through Outputs 2 Transformer-isolated AES-3 Stereo Outputs AES/EBU, 75ohm, unbalanced BNC Audio Input and Output Optional HD/SDI Input and pass-through Interface Optional Analog I/O ITU-R BS.1770/1 Industry Standard Loudness Measurement Loudness Measurement and DTS Neural Loudness Measure Correction...
  • Page 6 Do not discard with household or commercial waste. DaySequerra products are manufactured with the environment in mind. The directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment (2002/95/EC) restricts the use of six specific hazardous materials in the manufacture of various types of electronic and electrical equipment.

  • Page 7: Introduction

    The DaySequerra ILC2ST Intelligent Loudness Control delivers ATSC A/85 CALM, ARIB – B32 and EBU R128 loudness compliance for stereo broadcasts worldwide in a cost-effective feature-rich 1 RU package.

  • Page 8: Measuring Loudness

    Measuring Loudness Human perception of the sensation of an audio signal is properly called “loudness”. As early as 1933, research by Fletcher and Munson showed that human hearing sensitivity is largely based upon the frequency of the sound, as well as the sound pressure level (SPL). As humans do not hear sound using standard measures of intensity, measuring loudness based upon SPL or the root mean square (RMS) voltage of the electrical signal will not agree with human perception.
  • Page 9 Weighting Curves To achieve a more accurate loudness measurement, the method should include critical bands in the measurement. Critical bands describe auditory filters within the human cochlea. (J. Allen, 2010). To illustrate this, a subject is presented with a single tone of a certain energy level, and more tones are added with equal energy in the critical bands –...
  • Page 10 Bronwyn Jones and Emil Torick created a revised CBS loudness meter in the early 1980s that consisted of eight filters, each covering three critical bands. This approach did prove to deliver better subjective modeling than traditional SPL or RMS measurements (Jones & Torick, 1982). In 2004, Nielsen and Skovenborg published an AES paper that expanded upon the ideas of critical band loudness measures.

  • Page 11: Installation

    We provide a limited 1-year warranty on all of our products; however, if you don’t register your unit, it is impossible for us to contact you to notify you when important software upgrades become available. Please take a few minutes to complete the warranty registration form on our website, www.daysequerra.com. iLC2ST User Manual...

  • Page 12: Power Connection

    Rack Mount Installation The ILC2ST chassis has four rack mounting holes and has been designed to fit in a standard 1RU space. Plastic ‘finishing’ washers are recommended to protect the painted surface around the mounting holes. Locate the air vents on each side of the unit, and be sure to keep them clear so the unit may have adequate ventilation.

  • Page 13: Rear Panel

    Display and Controls VACUUM FLUORESCENT DISPLAY - A Multi-function display will indicate current status of the unit and programming menus. ROTARY ENCODER - A stepping optical rotary encoder is used to select values or navigate the menu system. SELECT KEY - Used to enter a menu or confirm a selection. To enter the main system menu, simply press ENTER while iLC2ST is on the HOME screen.
  • Page 14 SMPTE 292M, and SMPTE 424M as well as ITU-R BT.656 and ITU-R BT.601. See the HD/SDI section of this manual for more details. The AES-3id-1995/SMPTE 276M standard dictates a 75 ohm unbalanced connection and requires proper termination. The termination should occur at the destination of the signal (that is, on the inputs to ILC2ST).

  • Page 15: Programming Menus & Functions

    is auto switching and will work on 120VAC-60Hz or 240VAC-50Hz electrical power systems with a maximum total current draw of 25W (>.25A 120VAC or >.15A 240VAC). HD/SDI ILC2ST can use an optional factory-installed HD/SDI I/O module to de-embed audio programs from a HD/SDI stream for loudness processing.

  • Page 16: Homescreen

    Home screen View iLC2ST offers 2 preset Home screen views and 4 custom to choose from. Preset: Main (default) and Standard. Main displays both channels on the VFD at the same time. Stereo – A on the left and Stereo – B on the right side. See figure xx. Standard displays only one channel with 2 dynamic fields to change.
  • Page 17 The UI controls will then switch over to Stereo B. The arrow is only visible when the user scrolls over to it. 8. Field #2 (Stereo B) measured value. This field can be customized by the user and saved in a preset.
  • Page 18 5. Indicates the current measurement displayed in Field #1. Entering Channel selection mode in this field allows the user to toggle thru Max SL, Max ML, Infinite Average, True Peak, Max True Peak and LRA. 6. ‘Stereo A or B’ - Play / Stop / Reset Infinite Average icon. Selecting this icon while on the Home screen and ‘pressing’...
  • Page 19 The Algorithm Settings menu contains all the values required to tailor the loudness measurement functions for your specific purpose. Frequency Weighting: ITU1770, Flat, Leq A, Leq B, Leq C, Leq D, ITU468, and Leq M measurements are selectable to relate the ‘L’oudness of an ‘eq’uivalent amount of energy in a standard signal Loudness Standard: Three different loudness standards are selectable when ITU1770 is selected for Frequency Weighting: A/85 ATSC for USA (Default);...

  • Page 20: System Settings

    Figure 3. Loudness Meters screen display Edit Home Screen Name Creates and edits a custom name for each of the 4 user defined Home Screens. User 1, User 2, User 3 and User 4 are given by default. Each name can be up to 10 characters long using A – Z and 0 – 9. Press ENTER then use the rotary knob to scroll to the desired character.
  • Page 21 I/O Menu Figure 6. I/O Menu screen display The I/O Menu will allow you to tailor iLC2ST to suit your specific application. Audio Input: Submenu for selecting the audio source and channel mapping. Audio Output: Submenu for defining enabling and disabling the final limiter. GPI 1 –...

  • Page 22: Audio Output

    Audio Source: Determines which set of physical inputs iLC2ST will use to receive audio. Only the installed options will be available; only one input type may be used at a time: • AES Inputs: Audio input is from the BNC AES input jacks. (Default) •...
  • Page 23 The DaySequerra Eclipse iLC2ST has several configurable network settings. All of iLC2ST’s network settings are password protected. The password to change the network settings is ‘ds123’. Please take note when entering the password that the iLC2ST password is case sensitive. The DaySequerra iLC2ST is configured to take a DHCP address by default.
  • Page 24 DSP 2 Utilization: Shows the current load on iLC2ST’s secondary DSP. LED Test: Turns on all front-panel LED indicators to verify their functionality. Meter Brightness: Allows adjustment of iLC2ST’s Input and Output meters. (Default: 0) Display Brightness: Allows adjustment of iLC2ST’s display output. (Default: Max) Restore Settings: Returns all settings to their factory default values and will reboot the unit.
  • Page 25 About Menu Model Number: Displays the model number of the unit. Serial Number: Displays the serial number of this ILC2ST. Build Number: Build Date: Hardware Rev: Displays the hardware revision level of this unit. Firmware Rev: Displays the firmware revision level that is running on this unit. Eclipse Algorithm: Eclipse Algorithm Rev: DTS Algorithm: Displays the specific DTS algorithm running.

  • Page 26: Loudness Control Presets

    Loudness Control Parameter Presets Parameters that define how loudness control is applied to the input audio can be set by way of presets. ILC2ST contains three factory defined presets as well as space to save 4 user-defined presets. The factory-defined presets have been designed as general starting points and may not be appropriate for all types of audio.
  • Page 27 and are not managed by the loudness processing to avoid bringing up the noise level. Input signals above the Noise Floor are considered valid and are managed by the loudness processing. Attack / Rise: Controls how quickly the processing will respond to sharp onsets in loudness level. Note: A compressor is present after the attack time processing to catch any short-term loudness peaks, which may pass through.
  • Page 28 Parameter Default Correction Ratio 0.95 LIGHT PRESET - This preset is designed for very Upper Threshold 0 dB subtle loudness correction over longer periods of time. Lower Threshold 0 dB It characteristically has a lower Loudness Correction Dead Band 4.0 dB Ratio and a slower Attack and Release time.

  • Page 29: Remote Dashboard

    Be sure that the iLC2ST is connected to a network via the network port on the rear panel. The DaySequerra Remote Dashboard software will allow remote monitoring and logging of audio loudness as it is measured by iLC2ST. Double click the installation icon to install the program. A shortcut will be created on your desktop.
  • Page 30 Figure 13. Un-configured Main viewer window At the top of the window there are three navigation tabs: Stereo A, Stereo B and Settings. Click on the Settings tab in order to configure the program. After initial configuration, the application will start and resume communication with iLC2ST, if the network address previously set is still valid.

  • Page 31: Remote Dashboard Configuration

    Communication Log: Enables a diagnostics log to help troubleshoot any communication issues. This data will be helpful to DaySequerra support staff in diagnosing any communication problems. Data Log Options: Allows certain data fields to be captured to the log file. If the log files grow too big, it...
  • Page 32 Logging Stereo Unit (A and B) Loudness measure that is used for the stereo inputs. Stereo Target (A and B) Target value set for the AUX inputs. Stereo Short Avg. (A and B) Short combined average for the AUX inputs. Stereo Peak (A and B) Combined peak value of the AUX inputs.

  • Page 33: Using Remote Dashboard

    Surround inputs, Stereo inputs, or the Remote Dashboard configuration page. Clicking on the DaySequerra / DTS Logo will display version and copyright information about the application. 3. Combined Measure History: The last 40 seconds of the short combined average is displayed on the graph.
  • Page 34 performing a pause/resume or reset of the infinite average value in both the application and on iLC2ST. 4. Per channel Short Term Average: Shows the short average of each channel on the graph. A heavy vertical line shows where the target value on the iLC2ST is set. Each channel’s reading is also shown in numerical form to the right of the graph, with the graph lines and the numerical value changing color to show the level of loudness.
  • Page 35 Press the OK button to select the default location (Cell A1) or select the alternate desired location and press the OK button. The log file data is now displayed in Excel. Each column header contains the text description of the data that is displayed. In order to make a line graph, first select the data that will be displayed in the graph.
  • Page 36 Following the same steps outlined above, a sample radar style graph was created. This graph type can be found in Excel 2007 by clicking on the Other Charts button and then selecting Radar or in Excel 2000/2003 by selecting Radar from the Chart Wizard. Figure 16.

  • Page 37: Firmware Update

    ILC2ST may be left in an un-usable state and will need to be returned for factory service. Please follow these steps to upgrade your unit, unless directed otherwise from DaySequerra: 1. Un-Zip the files using a compatible utility that can handle ZIP archive file format into a new empty directory on your PC.

  • Page 38: Maintaining An Accurate Clock

    ILC2ST Remote Dashboard The DaySequerra ILC2ST Remote Dashboard software runs on a Windows computer on your network and will allow remote monitoring and logging of audio loudness data as it is measured by ILC2ST. The Remote Dashboard software’s main objective is to log your program audio loudness and have those measurements available for compliance verification.

  • Page 39: Remote Dashboard Troubleshooting

    Remote Dashboard Troubleshooting If the Remote Dashboard software is not working, please check the following items before contacting DaySequerra technical support: 1. Is the ILC2ST on the same physical network and subnet as the PC running the application? Make sure the subnet mask is configured to a broad enough scope.

  • Page 40: Warranty Information

    DaySequerra warrants this product to be free from defects in materials and workmanship to its original owner for one (1) year from the date of purchase. DaySequerra will repair or replace such product or part thereof that upon inspection by DaySequerra, is found to be defective in materials or workmanship subject to conditions contained herein.
  • Page 41 Manufactured under license from DTS Licensing Limited. DTS and the Symbol are registered trademarks and the DTS logo is a trademark of DTS, Inc. Product includes software. © DTS, Inc. All Rights Reserved. iLC2ST User Manual...

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