VocaLog2 Help File


Instruction Manual for VocaLog 2™ Vocal Activity Monitor


Table of Contents:


Getting Started
Hardware Overview
Software Overview
                Main Menu
                Add New Patient
                 Connect to Monitor Tab
                                Calibration Wizard
                                Ambient Noise Compensation

                Manage Patients Tab
                Receive Data Tab
                Remote Connect Tab
                Analyze Vocal Data Tab
                Change Settings Tab

Preparation for a New Patient
                Working With a Returning Patient
                Adjusting Patient Settings

Creating and Editing Custom Patient Reports
Viewing and Saving Patient Reports
Computer System Requirements
Technical Support
Rainbow Passage



Introduction to the VocaLog 2™ Vocal Activity Monitor


The VocaLog 2™ Vocal Activity Monitor provides a system for objectively evaluating and treating Sound Pressure Level (SPL, measured in dBC) in voice patients.  The VocaLog 2™ system consists of the VocaLog 2™ Activity Monitor worn by the patient to monitor and record vocal activity, the PC software, and a Calibration Microphone.  Using the VocaLog2 Desktop Application on your PC, the clinician can download the data recorded by the Monitor.  Together, they provide a means to monitor your patients’ vocal activity for direct interpretation by the clinician and feedback to the patient on established treatment goals. 


The VocaLog2 Desktop Application software allows you to interpret the data collected by the VocaLog Vocal Activity Monitor.  Using the VocaLog 2™ System, you can initialize and calibrate the Vocal Activity Monitor, connect remotely to monitor and receive data for analysis within the VocaLog Desktop Application Software, and monitor daily patterns in your patient’s vocal activity to determine when the patient’s volume is outside the range of established loudness levels. 


Notice: The VocaLog 2™ system does not record voice, sounds, or speech. It does not recognize speech. It only logs Sound Pressure Levels using the dBC scale.


Up to Contents

Getting Started:

Installing the VocaLog 2™ System

The VocaLog 2™ Desktop Application must be installed on a Windows® PC prior to operating the VocaLog 2™. 


Begin the Installation

Insert the VocaLog 2™ Installation USB drive into the computer. Installation should start automatically. If nothing is displayed after a few seconds, browse the USB drive, and double-click setup.exe.


Set-Up Wizard

Follow the on-screen instructions as prompted by the Set-Up Wizard which will guide you through the steps necessary to install the VocaLog 2™ Desktop Application. The software installation takes approximately five minutes. Once installed, the Desktop Application will start automatically. (The application is also available on the Start Menu, under All Programs -> Griffin Laboratories -> VocaLog 2™ Vocal Activity Monitor).







Fill in the required fields on the Registration and Account Setup page in order to complete the system installation.







The password will be used for locking and unlocking your screen for privacy with patient's present so it can be as short as 2 characters.



Driver Installation

During the installation process, you will be prompted to install the VocaLog 2™ Monitor drivers.  These drivers must be installed before connecting the VocaLog 2™ Monitor to the USB port in order for the VocaLog 2™ Monitor to communicate with the VocaLog 2™ Desktop Application.

Note: When installing the drivers, a warning message may appear indicating the drivers are not digitally signed.  If this occurs, click Continue.  The drivers can also be installed through the menu File > Advanced Options > Drivers > Install Drivers



If the drivers do not install automatically (often due to a 64 bit operating system) follow the steps below:

1. Open your Device Manager in Windows

2. Locate the VocaLog 2™ Docking Station in the list

3. Right Click and select Update Driver Software

4. Select Browse my Computer3

5. Browse for the VocaLog(R) Software Installation USB and select Docking Station Drivers

6. Click OK and installation will automatically install drivers.


Notes about Installation:

The .NET Framework 2.0 is required for installation of the VocaLog 2™ Desktop Application.  Setup will automatically detect this and install if it necessary.  This may add a few minutes to the installation time.


Uninstalling the VocaLog 2™ Desktop Application

To Uninstall the Desktop Application:

·         Windows XP and earlier: From the Start menu, open Control Panel, choose Add or Remove  Programs, locate the VocaLog 2™ Vocal Activity Monitor, and click Remove to uninstall the program.

·         Windows Vista or 7: From the Start menu, open Control Panel, choose Programs and Features, locate the VocaLog 2™ Vocal Activity Monitor, and click Remove to uninstall the program.



Up to Contents

VocaLog 2™ Hardware Overview


The VocaLog 2™ Vocal Activity Monitor hardware consists of a neckband “monitor” and a USB microphone used during calibration. The following section will outline the various features of the hardware.



In-Ear Auditory Alerts:

OPTIONAL FEATURE: Not included on all units. To use, insert the ear piece over the prong located on the VocaLog2 neck band. When auditory alert mode is enabled, the VocaLog 2™ Unit will emit an audible signal any time undesired vocal activity is detected.  To adjust volume simply press the V+ button to increase volume, and the V- button to decrease volume.


Vibrotactile Alerts:

The VocaLog 2™ Unit has the ability to vibrate when undesired vocal activity is detected (either too soft or too loud).  Slide the switch labeled VIBE on the neck band to the vibe position to enable the vibratory mode.  This feature can be disabled during the calibration routine.



Standby Mode:

Slide the switch to the SLEEP mode when the VocaLog 2™ unit is not in use to preserve battery life.  This is also recommended when the patient is not wearing the monitor, to avoid picking up noise.


The VocaLog 2™ Laryngeal Sensor

The Laryngeal Sensor on the VocaLog neck band unit detects the patients’ vocal activity and transmits the data to be stored. Proper and consistent placement is essential for accurate calibration and monitoring. The sensor should be located just above the sternal notch, and must be flush against the skin with enough pressure to ensure constant contact. To assess proper fit, direct the patient to move their head side to side and up and down several times.  The sensor may self-align with initial movements, and should not move once properly positioned.


Size Selection:

Sizes are based on neck size, in centimeters. Use the included flexible ruler, and not shirt size. In general, most women will use a size 28, and most men will use a size 35.

Size 28, for neck sizes 28 to 35cm

Size 35, for neck sizes 35 to 42.5cm

Size 43, for neck sizes 42.5 to 50cm


Adjusting for Proper Fit:


The unit must be adjusted prior to calibration, and must be recalibrated after adjustment.

Length: There is about 2cm (.8") of adjustment in each size. The correct size must be ordered. The neck band may be slid into or pulled out of the main housing to lengthen or shorten the neckband. Do not force it. Adjust for comfort; the main housing should wrap around the neck more than 180 degrees so it does not shake off easily.


Curve: The VocaLog 2™ Laryngeal Sensor has a durable wire frame which can be bent and adjusted for proper fit.  It is recommended that slight adjustments be made, and test for fit between each adjustment. 

To tighten: Cross the two ends over each other until the desired fit is achieved.

To loosen: gently pull the two ends away from each other until desired fit is achieved.


WARNING: A loose fit may cause loss of accuracy, due to inadequate pressure on the sensor.



The VocaLog 2™ Unit includes a built-in rechargeable battery. A green blinking light near the USB port of the VocaLog unit will briefly flash every two seconds when the battery power is low, and not plugged in for charging. 


Charging the Battery

The VocaLog 2™ unit should be charged prior to first use. We also recommend charging it every night.


The VocaLog 2™ unit is charged through the built-in Micro-USB port through any USB connection (e.g. a computer, car adapter, or home charger).  An LED light will illuminate while the unit is charging and will slowly blink (once per second) when charging is complete.  A fully charged battery will run continuously for up to 3 days depending on use. Alerts increase battery drain.  Charging an empty battery may take up to four hours. 



The VocaLog 2™ Calibration Microphone

The VocaLog 2™ Vocal Activity Monitor includes a specially calibrated USB microphone for use while calibrating the monitor to the patient.  Please ensure that you have plugged in the microphone and your computer settings are enabled for microphone activity.  The first time you run the PC program, you will be prompted to enter the calibration key located on the front of the calibration mic.  Do not discard this number.



Up to Contents

VocaLog 2™ Desktop Application Instructions


The VocaLog 2™ desktop application is used to manage patients, calibrate a monitor, update settings, and review collected data. In the section below, you will learn how to utilize the main features of the program.  


Main Menu:


Each time you open the program you will be presented with the main menu shown below. This is the starting point for navigating through the program.  To return to this menu, simply click the Main Menu button in the top right corner of the screen.


   Use the Main Menu tabs to navigate the VocaLog 2™ Desktop Application.   Note:  When a monitor is not detected, only the option Manage Patients will appear.  Menu options include:


1. Add New Patient

2. Manage Patients

3. Receive Data


1. Add New Patient

When selecting “Add New Patient”, a privacy alert will appear.  This is just to allow you to keep the patient data private. Click [Continue].  You will then be prompted to enter the patient’s name.


NOTE: If you have multiple patients with the same name, i.e. John Smith, you must give each patient a unique name or only one record will be created.











From there, you will be taken to the Monitor Set-up sub-tab on the Connect to Monitor tab.   Three steps are then clearly displayed:  

Step 1- initializes the monitor - The monitor must be initialized in order to clear the VocaLog

memory and prepare the device for calibration. 

Step 2 -allows you to enter any relevant notes about the patient

Step 3 - starts the calibration wizard - This will set up the monitor for use by the new patient.

Note: Your time and date must be current in order to ensure accurate data collection.


Connect to Monitor Tab

The first screen you will see after clicking [Calibrate Now] is on the Connect to Monitor tab.  This tab allows you to manually select individual tasks to do with a monitor. At the top of the screen  is a drop-down selection to select which monitor you will be working with. If you only have one monitor, it defaults to that monitor. If you have more than one plugged in, be sure the appropriate monitor is selected. The Calibration Wizard automatically directs you to the Calibrate Monitor sub-tab to begin the calibration.


Calibration Wizard:


The Calibration Microphone should be placed 30cm (11.8") from the patient. Maintaining a consistent distance will improve accuracy. Ensuring the patient is comfortable will help.


On the VocaLog 2™ Vocal Activity Monitor, verify the SLEEP switch is turned off (slid away from SLEEP). Set the VIBE switch towards VIBE if you want the patient to receive vibrotactile feedback.


Prior to launching calibration, ensure you are in a quiet room with minimal background noise as this will interfere with the calibration.   You will receive a warning message if the ambient noise is too high.



Select the type of patient you will be working with.


The button [Change Patient Alert Settings] skips the calibration process and allows you to jump to the Calibration Completed step and make adjustments to the patient's alert levels without recalibrating the device. This should not be selected for new patients.


Follow the on-screen prompts and instruct your patient to perform each task as it is displayed. If you are not satisfied with a task, click Go Back and repeat the task.  When possible, tasks should be started immediately upon pressing the Start button.


After the tasks are completed, select the type of alert you would like your patient to receive.


Choose whether you would like to utilize the Ambient Noise Compensation. If you choose to use it, enter the dB appropriate for the patient.


Once Calibration Wizard is complete, optimal settings for the patient will be provided based on data collected.  You can modify the alert settings and fine-tune the VocaLog2 monitor for the patient using the arrows next to each setting. For best results, it is recommended to have the patient speak at their targeted volume. You will see a real-time visual display of their vocal levels at the bottom of the screen.

-For Hypophonia patients, red indicates the volume was too low which would result in an alert to the patient, green indicates the patient is speaking at or above their targeted volume.

-For Hyperphonia patients, Blue indicates the volume was in the target range (i.e. "Normal" speech"), and red indicates the patient is speaking at or above their targeted volume, which would result in an alert to the patient.






Patient Alert Setting Descriptions:

Standard Options:

Minimum Phonation Volume: This is the quietest volume that will be detected as voice or phonation. Any detected sounds quieter than this level will be discarded, and not considered phonation.


Targeted Phonation Volume:

          With Hypophonia patients, this is lowest acceptable level at which they should speak.         

          With Hyperphonia patients, this is the highest acceptable level at which they should speak.


Alert Delay: This is how long the device waits at a continuously undesired level before alerting the individual. This is patient specific; suggested values are .75-1.00 second(s). Smaller values alert the individual faster. A very sensitive individual on voice rest may require a very fast (.25 sec) alert. Individuals who only speak in brief phonation may also require a shorter delay. Too short of a delay will result in excessive alerts, and may result in a user ignoring alerts.


Alert Type: Modify: This button allows you to go back and modify the Alert Type settings.





Ambient Noise Compensation: 

Ambient Noise Compensation:  This may be turned on or off. This allows the alert levels to vary, depending on the ambient noise. The Ambient Noise Compensation does not adjust the target levels; only the alert levels.  For instance, a Hypophonia patient may require a higher alert level in a louder room. This is because a louder environment will require an individual to speak louder in order to be heard over ambient sounds. However, activating this feature and adjusting this value does not change the Targeted Phonation Volume, so the patient may receive an Alert while within their target.

Note: Discretion must be used for voice-rest individuals; this feature may not be beneficial.


Ambient Noise Compensation dB:  This is the number of dB added to the ambient sound level for alerts.  Suggested setting: 0 or 1. Higher values will result in an Alert unless the patient is very loud.


Maximum Phonation Volume:  The ambient noise compensation will not exceed this.



This is a real-time display of the microphone dB readings. The green (or blue) flag indicates a graphical position of Minimum Phonation Volume, and the red flag indicates the Targeted Phonation Volume. The yellow flag moves with the patient Sound Pressure Level (SPL, in dBC).


Typical Numbers For Reference: 

          Minimum Phonation Volume is typically 50-60dB, and varies between individuals.

          Normal Conversation at 1 meter in a quiet room is 60-65dB.

          Targeted Phonation Volume  must be selected by a clinician, based on the individuals' needs.


Verify and Fine-Tune Values:

Have the patient speak (i.e. read the Rainbow Passage), and observe the Microphone values. While they are talking, the meter should nearly always be above the Minimum Phonation Volume.  The clinician must make the judgment call for appropriate settings for each patient. For instance, if a hypophonia individual struggles to achieve the target, you may need to reduce the target.   Once you have adjusted the settings to your satisfaction, click [Save Calibration]. 


Up to Contents








2. Manage Patients

Select Manage Patients to be brought to the corresponding tab. This function enables you to view your patient list, rename a patient, delete a patient, view any previously collected data-sets, view and modify patient notes, and modify existing settings. There are also shortcut buttons to [ Adjust Monitor Settings ] and [ Calibrate Monitor ]


To view a patient data file, select the patient you wish to view and double-click the data set thumbnail to open the patient’s file.  



Up to Contents



3. Receive Data

To download patient data from the VocaLog2 Monitor, select Receive Data from the Main Menu.   Choose to Receive data and clear the memory, or Receive data only.  It is recommended that you Receive data only to ensure transfer is successful prior to deleting the memory.  After data has been received, the Analyze Vocal Activity page will display the patient data.






Up to Contents


Remote Connect Tab

Information coming soon!


Analyze Vocal Data Tab:

The Analyze Vocal Activity Page displays either a daily view or a timeline view of collected vocal activity, and provides options for viewing and analyzing the data. A summary of collected data is displayed.  For further detail on the data, select the Vocal Activity  tab to see a breakdown of the data.


When data is selected in a graph, the Graph Overview area on the lower left side of the screen will display a summary that includes all samples selected. To make a selection, left click with the mouse and drag over the data sets to be analyzed. (See Graph Tools below).

When the Daily View is selected, the first column of data is an Average of All Data. Each subsequent column is an additional day.


The following options are displayed on the Vocal Activity Page:


Graph Tools Sub-Tab:

Select: (shortcut S) activates the user’s mouse as a selection tool. Click and drag on the graph to create a selection.  Holding the Ctrl key while selecting data will allow you to select multiple sections. Additional Selection Options are available by right clicking on Select.    

Tip: Each Selection option has a keyboard shortcut for quick access. Use these shortcuts to facilitate data selection.


Move (shortcut V) allows the user to move the data in the zoom function.  While zoomed in on a data selection, click the graph and drag it to the desired location.  The hand tool will grab the data and move it in the direction indicated by the mouse.

Zoom (shortcut Z) allows the user to zoom in (left click) and out (right click) on the graph.  Additional zooming options are available by right-clicking the Zoom tool.  Tip:  The Mouse Scroll Wheel can always be used to zoom in and out, regardless of the tool selected.


Graph Tool Tips

The tool tips allow the user to quickly view the data directly under your mouse.

·         Delay: Display graph information after a short delay

·         Persistent: Display graph information regardless of movement

·         Instant: Display graph information immediately as your mouse moves


Graph Options Sub-Tab

This option allows the user to change how the collected data is displayed.  The Graph default option displays normal and undesired speech levels on the graph. The Legend option displays a list of colors and the values they represent along with the 0-60 second timespan than each sample represents.


The Daily View is helpful for analyzing trends and patterns. (For instance, a teacher, who may have spikes at recess.)


Graph Navigation Sub-Tab

The Thumbnail View provides a quick overview of the entire graph. To display the current view, zoom in on the main graph and a small rectangle will display the current view.  Use the mouse to drag the rectangle to a new location for quickly navigating through the graph. The mouse wheel can also be used to zoom in and out.

Zoom To Selection

Click the Zoom to Selection  option to zoom the selected data to fill the entire graph window.

Zoom Out

Reduces the graph so the entire graph is in view.

Auto Night Shift / Time Shifting

It is possible that a patient may be vocally active during the hours around midnight.  Data may wrap from one column to the next making it more difficult to analyze.  The "Time Shift Slider Bar” to the left of the graph adjusts the start time of the graph. For example, instead of "12 am to 12 am", display "9am to 9am" by sliding the "Time Shift Slider Bar" up. Alternatively, the "Auto Night Shift" button will search the data for a time with no activity. It will then slide the "Time Shift Slider Bar" to that time, so that the columns will wrap only when there is no data. Using this feature only shifts the starting time of the graph, and does not add or subtract time. This is evident when moving the slider, you can see the data move up and down.

21 22

Data Reports Sub-Tab

The VocaLog 2™ is designed to provide quick, easy-to-read data reports from the collected patient data. These data reports can be customized and used as a template for multiple patients. The following is an overview of the report options:





Choose a Report Template

The Standard Report Templates folder has two sample report templates to choose from:  The List Report displays only patient data collected in list form.  The Verbal Report is a narrative style report in paragraph form which can include select information from collected data. Both reports can be customized and stored for retrieval in the “User- Created Reports” folder. These are only samples, and it is expected that the clinician will tailor them to their specific needs.


Customizing a Report

To customize a report, click on “Edit this Report Template” at the bottom of the page.  This will take you to the “Customize Reports” Sub-Tab in the Change Settings Tab. Click Edit to edit the current report. To edit a different report, locate the report in the Choose a Report Template menu, select it, and then click the “Edit” button. Rename the report by changing the text at the top of the page in the text box. The new report name and report will automatically be saved under the User-Created Reports folder.


Text that is highlighted BLUE is referred to as a Placeholder Field (found at the top of the page).  These placeholders automatically pull information from the data collected and downloaded.   Placeholders can be added or removed.  Once the report is customized, return to the Analyze Vocal Activity Tab and view the User-Created Report in the Data Reports Sub-Tab.


For more details, see Creating and Customizing Data Reports.


Other Stats Sub-Tab

The Other Stats sub-tab will display a date and time each time a function is activated on the VocaLog 2™ Unit.  


Up to Contents


Change Settings Tab

Activation Sub-Tab

Enter the calibration key to register the device.


Display Sub-Tab

Display promotional offers from Griffin Laboratories

Setup Sub-Tab

Allows for changes to select application settings, installs the VocaLog 2™ Docking Station Drivers and firmware updates, creates a Desktop Shortcut, and specifies where the patient files are stored.

Patient File Storage Location

The Patient File Storage Location specifies the folder in which the patient files are stored in the system's Application Data folder. Storage locations can be changed from the Data Application to other locations on the computer.

Customize Reports Sub-Tab

This is discussed in detail in the   Creating and Customizing Data Reports  section.




Up to Contents


New Patient:

o    Preparation: Before the patient arrives:

o    Sizing should be determined ahead of time. Most women are size 28; most men are size 35.

o    Ensure the monitor is fully charged before the patient arrives. (Up to four hours.) LED blinks once per second when fully charged. See Charging Information.

o    If the unit is new to the PC, and has not been activated, the device must be activated.

o    It is strongly recommended that you create the New Patient record (either [Add New Patient] from the Main Menu, or [Create New Patient] from the Manage Patients tab) before the patient arrives in the office. This gives you the opportunity to initialize the monitor and clear any prior data to prep the device for the new patient. See Calibration Wizard

o    After the patient arrives:

o    Fit the monitor to the patient.

o    Calibrate the monitor to the patient.

o    Verify the Patient Alert settings.


Returning Patient:

o    From the Main Menu, click Receive Data.

o    Select either "Receive Data and Clear," or "Receive Data Only," based on your needs. See Receive Data.

o    If there is an existing patient record with the same name as the patient name in the monitor, the new data will be entered into that patient record. If there is not a patient (i.e. if multiple PC's are used), the patient is automatically created.

o    If you have not selected the patient name that corresponds with the monitor, you will see a warning before the data is uploaded to allow you to select the correct patient record.

o    The Analyze Vocal Activity tab is automatically displayed. You may view the chart, and create reports here.


Adjusting Patient Settings:

If a patient is responding well to the Speech Therapy, a clinician may opt to modify the Alert settings.

o    If you are in the Main Menu, select Manage Patients, and select the patient.

o    Select the Connect to Monitor tab.

o    Select the Calibrate Monitor sub-tab.

o    If you wish to re-calibrate all over, walk through the Wizard as before. Otherwise, click Change Patient Alert Settings.

o    You should now be at the Review Settings screen where you can modify the settings. When finished, click Save Calibration.



Up to Contents
Creating and Customizing Data Reports


The VocaLog software can automatically fill in patient statistics into Placeholder Fields in your reports. There are template reports for you to customize to your needs; list form, and paragraph form. In the editor, the black text is text that you want shown and printed verbatim. The Blue text fields (i.e. {Patient Name} ) will be replaced by the data and statistics gathered from the clinicians entries, data, and logging.




Report Tab:

In the top tab, click Change Settings: (1)

In the secondary tab, click Customize Reports: (2)


How to Edit a report:

o    In the far left column titled "Choose a Report Template", click on a report you wish to edit. (3)

o    If you selected a template, click the Edit button.

o     If you wish to create a new report based on one you have previously created, click the Copy to New button. Below (2).

o    If you are modifying a Custom Report that has already been created, you will automatically be in Edit mode as soon as you click on the Report name in the Report Template menu. (3)

o    Type in a new name for the report. (i.e. "Custom Report (Teachers)")

o    In the text box, edit the text just as you would in a standard text editor such as Notepad.

o    When

Note: Only plain text format is available. Changes are saved automatically and immediately.




Placeholder Fields:

Placeholder Fields are specially highlighted text that will be replaced by data either entered by the software user, or by data gathered from the monitor, when a report is generated. Placeholder fields are text within braces: {}. The text within the braces is descriptive text that describes the data that will replace it. Do not edit the text within the braces, or the field may become invalid.


Adding and Editing Placeholders for Data:

Placeholder Fields are added by Clicking the topic (5), and selecting a field from the drop-down list (7). The added fields will be highlighted (6), and will be replaced with data when viewing the data in the report. (To view a filled in report, see Patient Report.)


To delete a Placeholder Field, simply highlight it with the mouse and delete it.


Note: With slower computers, deleting a placeholder may cause a noticeable delay as the form updates.



Up to Contents
Viewing and Saving Patient Reports



1. In the top tabs, click the Analyze Vocal Data tab.

2. Click the Vocal Activity Graph tab.

3. At the bottom, select Data Reports.

For the report to be complete and "Selected Data" Placeholder Fields to be filled in, you must have some data selected. Use the mouse to highlight the section of data on the graph that you want to include in the report. Use the Ctrl key if you wish to select multiple sections.

Note: Any text that is highlighted is an invalid placeholder. It is suggested that the report be edited to only contain valid placeholders.


Copying and Saving Reports:

When modifying reports in the Edit mode, the changes are automatically saved as they are made. You may select text with the mouse, and copy it with Ctrl-C, and paste it into your word processor.

You may also click the Save Text... button and save the report as a text file.


There is a button to Edit This Report Template in the report editing tab.


Up to Contents


SPL: Sound Pressure Level. All measurements with the VocaLog system in dBC.


VocaLog Calibration Mic: The external microphone used for calibrating a monitor to the patient.

VocaLog Monitor: The sensor and electronic assembly within the neckband that monitors the user.

VocaLog Software: Refers to the PC program.

VocaLog System: Refers to all of the the components; the monitor, software, and the calibration mic.




Up to Contents

How do I view the graph?

In the top tabs, click Analyze Vocal Data

In the window below, select Vocal Activity Graph


How do I create my own reports?

In the top tabs, click Change Settings

In the window below, select the tab Customize Reports.


How do I enter BOLD text in my reports?

All text is plain text at this time. You may copy and paste the text into a word processor if you wish to format the text.


Why does my report contain highlighted fields, when I know they are valid?

If you have Placeholder Fields for Selected Data in your report, but you do not have any data selected, it cannot fill in the data. Select some data in the graph, and the report will be completed.


Why does the monitor vibrate no matter what?

There are two explanations for this. The most common is when Ambient Noise Compensation is on, and the Compensation Value is too high. Only use 0 or 1, unless you are experienced and are familiar with how this works.

If that is not the case, then it is advised to recheck the calibration values. Recalibration may be required.


What is SPL?

SPL = Sound Pressure Level. In this document, it is measured in dBC.


Will the VocaLog software work on my Mac?

No. It requires a Windows operating system.






Up to Contents
System Requirements

Windows PC with Windows Vista, or Windows 7

Note: Windows 8 is not currently supported. Windows 8 modifies the microphone volume settings "at random," and this skews the microphone calibration


2MB RAM memory, 4 or more recommended

2GHz processor minimum


Up to Contents


Technical Support


• Griffin Laboratories Website: http://www.griffinlab.com

• Online Tutorials Available through website


Contact Us Online:

• Contact Form: http://www.griffinlab.com/catalog/contact_us.php

• VocaLog 2™ Website: http://www.vocalog.com


Contact Us by Phone:

Griffin Laboratories Toll-Free Customer Support:

1-800-330-5969 (8am to 4pm Pacific Time PST)

• International Telephone Number: 1-951-695-6727


Contact Us by E-mail:

Griffin Laboratories Customer Support: support@vocalog.com


Up to Contents











Copyright 2014, Griffin Laboratories, Inc.

VocaLog is a registered trademark of Griffin Laboratories, Inc.    VocaLog 2 is a trademark of Griffin Laboratories, Inc.

Specifications subject to change without notice.




The Rainbow Passage


When the sunlight strikes raindrops in the air, they act as a prism and form a rainbow. The rainbow is a division of white light into many beautiful colors. These take the shape of a long round arch, with its path high above, and its two ends apparently beyond the horizon.


There is, according to legend, a boiling pot of gold at one end. People look, but no one ever finds it. When a man looks for something beyond his reach, his friends say he is looking for the pot of gold at the end of the rainbow.


Throughout the centuries people have explained the rainbow in various ways. Some have accepted it as a miracle without physical explanation. To the Hebrews it was a token that there would be no more universal floods. The Greeks used to imagine that it was a sign from the gods to foretell war or heavy rain. The Norsemen considered the rainbow as a bridge over which the gods passed from earth to their home in the sky.


Others have tried to explain the phenomenon physically. Aristotle thought that the rainbow was caused by reflection of the sun's rays by the rain. Since then physicists have found that it is not reflection, but refraction by the raindrops which causes the rainbows.


Many complicated ideas about the rainbow have been formed. The difference in the rainbow depends considerably upon the size of the drops; the width of the colored band increases as the size of the drops increases. The actual primary rainbow observed is said to be the effect of a super-imposition of a number of bows. If the red of the second bow falls upon the green of the first, the result is to give a bow with an abnormally wide yellow band, since red and green light when mixed form yellow. This is a very common type of bow, one showing mainly red and yellow, with little or no green or blue.



Up to Contents