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Summary of Contents for Wohler Pandora
- Page 1 Pandora Loudness Analyzer User Guide Software Version: V2.30 Part Number 821018, Revision J ® Pandora requires an Apple iPod touch (4th generation) which is not included with the unit.
- Page 2 Wohler Technologies, Inc. reserves the right to change or improve our products at any time and without notice. In no event will Wohler Technologies, Inc. be liable for direct, indirect, special, incidental, or consequential damages resulting from any defect in the hardware, software, or its documentation, even if advised of the possibility of such damages.
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Page 3: Table Of Contents
Topics ..............vii What Is Loudness? ............viii What’s New in Pandora? ..........ix Chapter 1. Installation ......1 Introduction ..............1... - Page 4 Initial Setup..............12 Setting the iPod touch Brightness.......12 Upgrading the Firmware ...........13 Configuration ..............15 Set Reference ............15 Channel Function .............19 Set Periods .............22 Logging ..............25 Password Settings............26 Creating a New Password ........26 Changing an Existing Password ......27 Removing an Existing Password ......27 Using a Password ..........27 Mode ..............28 Window ..............28...
- Page 5 Both Modes............37 Log File Contents............. 38 Header Data ............. 38 Record Data ............39 Emailing the Log File............40 Creating a Line Graph ............ 46 Downloading the File..........46 Creating the Graph ..........49 Chapter 4. Features and Specifications....53 Introduction ..............
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Page 7: Preface
Introduction What Is Loudness? viii What’s New in Pandora? 8 2 1 0 1 8 : Pa n d o ra Us e r G u i d e © 2 0 1 2 Wo h l e r Tec h n o l o g i e s, I n c. A l l r i g h t s r e s er ved . -
Page 8: What Is Loudness
P r e f a ce W h a t I s L o u d n e s s ? What Is Loudness? The familiar audio metering standards of VU and Quasi-PPM, developed in the 1930's for telephone and radio signal measurements, were conceived before more recent psychoacoustic research defined the true characteristics of human hearing response across different frequencies, listening levels and listening time periods. -
Page 9: What's New In Pandora
-24 (absolute LKFS or LUFS units) and stay below -2 dBTP for any and all peaks— and your audio is within specification. What’s New in Pandora? In this software release, we listened to your requests and as a result, we have added many new features and functionality. -
Page 11: Chapter 1. Installation
CHAPTER 1 Installation Introduction Overview This chapter describes the physcial controls and connectors of Pandora as well as how to download and install the software and install the iPod touch into the Pandora case. Topics Topics Page Introduction Safety FCC Compliance... -
Page 12: Safety
Unplug the equipment during lightning storms or when unused for long periods of time. Use of a cart is neither recommended nor approved by Wohler. Refer all servicing to qualified service personnel. Servicing will be required under all of the following conditions: •... -
Page 13: Pandora Overview
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Pandora Overview Front Panel Pandora’s front panel is shown on Figure 1–1 below. Figure 1–1 Pandora Front Panel... -
Page 14: Rear Panel
Pandora. Refer to Configuration on page 15 for details. • Desktop Stand: Pandora comes with a desktop stand pre-installed. Rear Panel Pandora’s rear panel is shown in Figure 1–2 below. -
Page 15: Installing The Software Upgrade
Mac or PC with an Internet connection • The USB cable that came with your iPod touch • The Pandora case and the power supply that came with it • The iPod touch (4th generation) • Credit card (for your Apple account if you do not yet have one) Important: If you do not already have an Apple account, you must first create one. -
Page 16: Instructions
C h a p t e r 1 I n st a l la t i o n I n s t a l l i n g t h e S o f t w a r e U p g r a d e Instructions Creating an Apple Account Download and install the latest version of... -
Page 17: Logging In To The App Store
Tunes Store (under Store ) in the left pane. At the top of the application window, click App Store At the top right corner of the application window, type wohler into Search Store field. Click on wohler loudness Click on... -
Page 18: Transfering The Wohler Loudness Application Into The Ipod Touch
USB cable. iPod touch Installation Pandora comes with a table top stand already attached to the unit. To insert the iPod touch into the Pandora case, rotate the case backward until the opening clears the edge of the stand (Figure 1–... - Page 19 Pandora Case Note: Newer units will have a hole into which you can insert a set screw to secure the iPod touch into the Pandora case. Insert the set screw into the hole and tighten with the hex wrench provided...
- Page 20 P o d t o u c h I n s t a l l a t i o n If you have not already done so, connect the Pandora power supply to the Pandora case and to a power source.
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Page 21: Chapter 2. Configuration And Operation
CHAPTER 2 Configuration and Operation Introduction Overview This chapter describes how to configure Pandora for your environment and then it describes in detail the three different modes of operation. Topics Topics Page Introduction Initial Setup Configuration Operation 8 2 1 0 1 8 : Pa n d o ra Us e r G u i d e ©... -
Page 22: Initial Setup
In it i a l Set u p Initial Setup Once you have installed the iPod touch into the Pandora case and applied power, you are now ready to launch the application, configure it (if needed) and begin using your Pandora. -
Page 23: Upgrading The Firmware
In the event you see the message displayed in Figure 2–3 below, please contact Wohler’s customer support for further instructions. Wohler’s contact information is on page ii of this document. 8 2 1 0 1 8 : Pan d o ra U s e r G u i d e... - Page 24 New Firmware Available - Progress Bar Note: Now that you have all the software installed, your Pandora may work exactly the way you want it to without any further configuration. If you’d like to try it, you can skip the...
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Page 25: Configuration
Manual mode, avoid starting a swipe over a control so that you don’t accidently change that control. To configure your Pandora, we’ll start with the options at the bottom of Setup Menu and work our way up to the top. - Page 26 C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n Set Reference screen is shown in Figure 2–7...
- Page 27 C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n Figure 2–8 Set Reference Screen - EBU The standard default values of the Reference Level, Relative , and are shown.
- Page 28 C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n •...
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Page 29: Channel Function
C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n Channel Function Before going into the screen, touch to select Channel Function your input source signal from the Source row: either In our example, we selected... - Page 30 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n • M (Meters): When checked, Pandora will display this meter on the meter screen. In the example in Figure 2–13 below, Meters 1 through 4 will be displayed on the meters screen.
- Page 31 C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n Swipe the screen from bottom to top to display more meter rows. If you want to rearrange the order of the channels, touch the down arrrows (between the channel pairs at the top) to select the channel pairs.
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Page 32: Set Periods
C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n •... - Page 33 C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n Figure 2–17 Set Integration, Histogram, and LRA Periods Slide your finger up or down over the rollers to change these values if needed.
- Page 34 C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n •...
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Page 35: Logging
2–18), touch Logging to display (Figure 2–19 bottom). Histogram Log Figure 2–18 Pandora Setup Menu Figure 2–19 Histogram Log Note: For information about how to email your log file and create a graph, refer to Chapter Log Data on page... -
Page 36: Password Settings
Figure 2–21 Password Settings Menu Creating a New Password Creating a password for your Pandora will disallow any changes in the Setup Menu until you enter the correct password. 8 2 1 0 1 8 : Pan d o ra U s er G u i d e ©... -
Page 37: Changing An Existing Password
C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n When the Password Settings screen appears above) touch Create Password Enter and confirm passwords as indicated on the screen. Touch Exit to return to the... -
Page 38: Mode
C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n C o n f i g u r a t i o n Mode Manual mode is for production, editing and compliance checks of a... - Page 39 C h a p t e r 2 Configuration and Operation C o n f i g u r a t i o n , the choices are Momentary (0.4 seconds), Short (3 seconds) (1 second to 1 hour, as set in the on the Integration Setup Menu...
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Page 40: Operation
Meter Screen as shown in Figure 2–25 below. Figure 2–25 Meter Screen Operational Modes You can run Pandora in two different modes: • Continuous Mode • Manual Mode. Continuous Mode In Continuous Mode, the Pandora continuously recalculates the... -
Page 41: Meter Screen And Histogram Screen Controls
Descriptions of these controls follow below. Figure 2–26 Level Meter Screen (Manual Mode) Note the LU meter scale indicator at the bottom right hand corner of the screen. Pandora has one ATSC, and two EBU scale ranges. (Zero equal to the Reference Level Figure 2–27... -
Page 42: Alarm Indicators
C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n O p e r a t i o n Figure 2–28 Numeric Screen - Manual Mode •... -
Page 43: Using The Demo Source
AES or SDI channel assignment selected right before you switch to Demo To test Pandora’s features without attaching an audio source, swipe the screen from top to bottom to display the Setup Menu 8 2 1 0 1 8 : Pan d o ra U s e r G u i d e ©... - Page 44 C h a p t e r 2 C o n f ig u r a t io n a n d O p e r a t i o n O p e r a t i o n Using the Setup Menu , set all other settings the way you want...
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Page 45: Chapter 3. Log Data
CHAPTER 3 Log Data Introduction Overview This chapter describes what constitutes a record in a log, how to email the log, and how to create a graph for analysis. Topics Topics Page Introduction About Log Data Emailing the Log File Creating a Line Graph 8 2 1 0 1 8 : Pa n d o ra Us e r G u i d e... -
Page 46: About Log Data
• What the file contains, and • What each record within the file contains. Note: When Pandora is in Demo mode, the system does not collect log data. Creating New Log Files Log files are created automatically as you measure loudness. And you... -
Page 47: Continuous Mode
Also, if a log file is in process, pressing the Start button also stops the existing log file. Continuous Mode Continuous mode, Pandora will begin a new file every night at midnight based on the iPod’s internal clock. Both Modes In both Manual Continuous modes, while logging is in progress, if one of the following settings is altered, a new file will begin (i.e. -
Page 48: Log File Contents
Source • Password Log File Contents ® Pandora generates a .csv file that you can open in Microsoft Excel. Within the file is one worksheet that contains header data and the sample records. Header Data The header of the log file includes: Start Date •... -
Page 49: Record Data
C h a p t e r 3 Log Data A b o u t L o g D a t a File Name: The name of this log file Sample Increment (non-configurable): • Continuou s: 0.5 seconds • Manual : 0.2 seconds Reference Level (LKFS): The value of the Reference Level... -
Page 50: Emailing The Log File
Pandora log files are in .csv format, viewable by text editor and spreadsheet applications. A text editor is all that is needed to display the summary data, (i.e., the extended sample data may be discarded to reduce file size if unneeded). - Page 51 C h a p t e r 3 Log Data E m a i l in g t h e L o g F il e Figure 3–2 Setup Menu From the Setup Menu , touch Logging . The Logging menu displays today's date and the number of logs found for the day (Figure 3–3...
- Page 52 C h a p t e r 3 L o g D a ta E m a i li n g t h e L o g F i l e Figure 3–4 Setup Menu From the Setup Menu , touch Manual in the Mode...
- Page 53 C h a p t e r 3 Log Data E m a i l in g t h e L o g F il e Figure 3–6 Setup Menu Now, touch Logging . You should see a record for today’s date with the current time.
- Page 54 C h a p t e r 3 L o g D a ta E m a i li n g t h e L o g F i l e The description of the log files found will appear in the scrollable window (Figure 3–8 below).
- Page 55 Log Files Apple's email application will open (Figure 3–11 below). The subject and body of the email will be filled out by Pandora and the selected (checked) log files will be attached. Figure 3–11 Histogram Log Screen with Selected Log Files...
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Page 56: Creating A Line Graph
(top right corner) to email the log file(s). After the email message closes, the iPod will display Email Sent in the status bar and return to the Pandora application. Creating a Line Graph For your convenience, Wohler has created a graphics template (using Microsoft Excel) that can accept the .csv data into the... - Page 57 C r e a t in g a L in e Gr a p h Navigate to the wohler web site: www.wohler.com. Decision Point: If you already have a member user ID and password for the Wohler web site, then log in by clicking on the Member Sign In link at the top right hand corner of the home page and sign in.
- Page 58 L o g D a ta C r e a t i n g a L i n e G r a p h Figure 3–13 Selecting Pandora When Pandora’s page displays, click on the Downloads tab in the middle of the page.
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Page 59: Creating The Graph
To view your data in graphic form, follow the instructions below. First open the Pandora Graph Maker file you just downloaded. Open the Pandora log file you received in your email inbox. Figure 3–14 Abbreviated Sample .csv File Header Data... - Page 60 Now click on the first worksheet (bottom of the window) Summary , to display the graph. Figure 3–16 Pandora Sample Log Data in Graphic Format - Log Summary Worksheet 8 2 1 0 1 8 : Pan d o ra U s er G u i d e...
- Page 61 You can modify it any number of ways to suit your needs. If you substantially improve this template and you’d like us to make it available to others, please email it to support@wohler.com and we will evaluate it. 8 2 1 0 1 8 : Pan d o ra U s e r G u i d e ©...
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Page 63: Chapter 4. Features And Specifications
CHAPTER 4 Features and Specifications Introduction Overview This chapter details the features and specifications of Pandora. Topics Topics Page Features Specifications 8 2 1 0 1 8 : Pa n d o ra Us e r G u i d e... -
Page 64: Features
LUFS as defined by the EBU recommendation. • Pandora measures up to 8 channels of PCM digital audio signals, from AES inputs or de-embedded from SDI, easily switched between common 2.0, 5.1 and 7.1 program sets or a custom meter configuration. -
Page 65: Specifications
C h a p t e r 4 Features and Specifications S p e ci f i c a t i o n s Specifications The specifications for the Pandora are listed in Table 4–1 below. Table 4–1 Specifications for the Pandora... -
Page 67: Appendix A Glossary
APPENDIX A Glossary AC-3 — Digital Audio Compression Standard (AC-3, E-AC-3), as described in ATSC A/52B. Anchor Element — The perceptual loudness reference point or element around which other elements are balanced in producing the final mix of the content, or that a reasonable viewer would focus on when setting the volume control. - Page 68 A p p e n d i x A Gl oss a ry gain reduction equal to the difference between -31 and the dialnorm value. Dialog Level — The loudness, in LKFS units, of the Anchor Element. EBU — European Broadcasting Union ITU —...
- Page 69 A p p e n d i x A Glossary Reference Level — Target Loudness Level, a value specified for uniform perceived loudness. ITU-R BS.1864 (and ATSC A/85 & ARIB TR-B32 by reference) specifies -24 LKFS. EBU R128 specifies -23 LUFS. Relative Upper Limit —...
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Page 71: Appendix B. References
APPENDIX B References The following standards, current as of this publication, are the basis for Pandora ITU and EBU default measurement settings. Additional information concerning standards development, their theoretical and subjective bases, and suggested application can be found at the standard's body web site for download. - Page 72 A p p e n d i x B R e f e r e n c e s EBU Tech 3344: Distribution Guidelines. https://tech.ebu.ch/webdav/site/tech/shared/tech/tech3344.pdf Web site for ATSC Recommended Practices: http://www.atsc.org/cms/index.php/standards/recommended- practices?layout=default ATSC Doc. A/85, November 2009: ATSC Recommended Practice: Establishing and Maintaining Audio Loudness for Digital Television.
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