Please select the appropriate section of questions to view:
No Subject ID Variable
Q: How do I fix the QDS error message: "There is no Data Element for the Subject ID variable SUBJECT?"
A: Look at the Interview Options you have set for your questionnaire; go to the Options|Interviews, Identifier tab in the Design Studio. You will see that the variable name for Subject ID is SUBJECT. This is a system default; QDS requires a unique identifier for each survey as lack of an identifier makes data management more difficult. If you do not want to include a Subject ID variable, just blank out that item on the Identifier Variables tab. Keep in mind that this option is best for testing only.
Q: Is there a way to automatically assign a Subject ID variable so that it does not have to be entered for each interview?
A: You can create an automatically calculated ID so that interviewers and/or data entry staff need not enter one. To do this, set up a questionnaire that includes an Automatic Variable named SUBJECT using the following steps:
1. Create an Automatic Variable called TODAY; type: Today's Date.
The resulting Subject ID for an interview conducted on March 19, 2002 at 11:22 a.m. would be
Q: How can I reduce the size of QDS specifications files (*.QDS)?
A: Specifications files retain a history of all changes. This history is used in building Change History reports and to undo changes. You can periodically clear old history information from your file by going to File|Save a Copy As in the Design Studio and checking the Discard Undo Information After Saving Copy option box. This will let you copy the specification and all its history to a backup file, then remove the history information for your current file. If you are not interested in retaining any history information, go to File|Save a Copy As and check the Always Discard Undo Information Before Saving option box. Both these options can significantly reduce file size.
Q: How do I copy specifications from one file to another or within the same file?
A: To copy an Element or group of Elements within the same Specifications file: 1) select the element(s) you would like to copy (to select more than one element click on the first element in the group, and while holding down the SHIFT Key, click on the last element in the group); 2) go to Edit|Copy; 3) select the Element just below where you would like the items inserted; and 4) go to Edit|Paste. Your copied Element(s) will now be visible in the Element list. Remember that you will need to edit the copied variable names and other changed information.
If you wish to copy Element(s) to a different QDS Specifications File, simply open both file(s) simultaneously within the Design Studio and follow the same steps described above for Copying Elements. You can toggle between files by using the Window Menu item. You can also use the Copy, Cut, Delete, and Paste Element(s) buttons on the Design Studio toolbar.
Q: How can I tell what the question numbering will be before building a paper questionnaire?
A: Look at the Question Number box on the Data Element tab to see your question numbering as you go along in the Design Studio; after you make any updates that affect question numbering, go to the Tools|Validate command and then go back to the Data Element tab to see the updated numbering.
Q: How can I override the QDS default question numbering?
A: Although QDS does assign default question numbers, there are several methods you can use to override this function. A question number has 3 parts: Prefix, Integer, and Suffix. For question number A1a, A=Prefix; 1=Integer; and a=Suffix. For each Data Element in your specifications, the Integer is determined automatically by QDS unless you override it with a Section Header Element or Format Element. The Prefix can be added optionally with a Section Header Element. The Suffix can be added optionally using the Data Element tab, Question Suffix box, and manipulated using the Increment Question Number Integer checkbox. Go to Tools|Validate to view the updated question numbering.
Q: How do I number questions such as, 1, 2, 3a, 3b, 4, etc. for my paper questionnaire?
A: You can check the Increment Question Number Integer box on the Data Element tab to force QDS to assign a larger integer for an element than for the preceding element (e.g., 2, 3a, 3b) by: 1) adding the Suffix letters a and b to the respective Elements to be numbered 3a and 3b in the Question Suffix box on the Data Element tab; and 2) checking the Increment Question Number Integer box on the Data Element tab for the Element to be numbered 3a. Go to Tools|Validate to view the updated question numbering.
Q: How do I include an Other-specify category to a code list question?
A: QDS does not provide a specific Response Type for Other-Specify questions. You will need to create two separate Data Elements: one for the Code List and a second for the Specify text. You can include a Skip Element between them to skip the Specify element when the code is not the Other category.
Q: How do you label one or more of the points on a scale in addition to the endpoints?
A: Create a Response Card for each scale with intermediate labels.
Q: How can I enter a line return in my question text?
A: You can include a hard return in question text with Ctrl-Enter. Hold down the Ctrl key while hitting the Enter key.
Q: What are the initial values for variables?
A: Automatic (numeric) Variables are always initialized to zero. Skipped Data Element variables are initialized as specified on the Data Element If Skipped and Calculations tabs. The default setting treats a skipped variable as Not Applicable and uses the value of zero for Not Applicable in a calculation. All numeric variables within QDS have a numeric range, a separate numeric code (e.g., 97 for Don't Know), and a string representation (e.g., Don't Know). When the Warehouse Manager exports data to SPSS or SAS, it provides a number of options for dealing with special values like Don't Know or Not Applicable.
Q: What's the maximum number of questions QDS can handle?
A: Under Windows NT and 2000, there is no limitation on the number of questions. However, under Windows 95/98, a questionnaire can only contain up to 2,048 elements.
Q: How can I prevent questions from being split across two pages in my Paper Questionnaire formatted for WordPerfect?
A: This seems to be a problem that all versions of WordPerfect have with RTFs (Rich Text Files). Based on testing, it appears that WordPerfect ignores any Keep Lines Together directives in RTFs. We have notified Corel about the problem but have received no response. This problem does not occur with Microsoft Word.
Q: How can I set up a skip based on responses to a Check-Each question?
A: When you create a Data Element with a Nominal-Check-Each Response Type, your output data set will include a set of variables-one for each choice and one for the total number of checked responses. For example, if you had the following question:
Variable Name: BOOKS
You will have the following variables in your data set:
BOOKS: the total number of items checked
To skip if more than one item was checked, you would enter the following restriction in your Skip Element If*: statement:
BOOKS > 1
To skip if choice 'A' was checked, you would enter the following restriction in your Skip Element If*: statement:
BOOKSA = 1
Q: How can I put the number of choices selected in a Check-Each question into another question on an Automated Interview?
A: You can create an Automatic Variable to display the count. After the Check-Each Response Type Data Element, insert an Automatic Variable named, for example, COUNT; select Numeric Calculation from the Type of Data to be Stored drop-down box. Enter the name of your Check-Each Variable into the Numeric Calculation/String Expression box:
where BOOKS is the variable name for your Check-Each question. The number of picked items will be assigned to this Automatic Variable. To display this number in a subsequent item, use a Substitution Token in your Question Text: "You selected &[COUNT] responses on the last question ."
Q: How would I put the actual responses selected in a Check-Each question into another question? For example:
Q1. Where do you usually go for medical care?A. Primary Care Doctor
A: You can create an Automatic Variable to display these. After the Check-Each Data Element: 1) insert an Automatic Variable named, for example Q1S; 2) select String Expression from the Type of Data to be Stored drop-down box; and 3) enter the following expression into the Numeric Calculation/String Expression box:
CONCAT(if(Q1A=1,if(Q1>1, "Primary Care Doctor,", "Primary Care Doctor"),""),CONCAT (if(Q1B=1,if(Q1C=1,"Clinic, ","Clinic"),""),if(Q1C=1,"Emergency Room","")))
The If function used in our example evaluates a logical expression and assigns one value if the expression is TRUE, another if the expression is FALSE, and another if MAYBE (optional), with the following syntax:
IF (Expr, Num1, Num2, Num3)
For example: If (A = 1, 10, 20). If A=1 is True then the result will be 10, if A = 1 is False then the result will be 20.
In this example, Q1 is the Variable Name for the first question, Q1A is the Variable Name for the Primary Care Doctor choice; Q1B is the Variable Name for the Clinic choice; and Q1C is the Variable Name for the Emergency Room choice. You can follow this with an Edit Element that displays an error if an item was chosen for Q2 that was not chosen for Q1.
Q: How can I fit a long Edit Element message completely in the pop-up box?
A: You cannot alter the font or window size for this dialog box. Typically, these messages are fairly short-for example, "Response to Q11 cannot be greater than Q12." If you need to display a longer message, you can specify that "Reconciliation elements follow this" and go to an Information Element that displays the longer explanation; for example,
Edit Element Message -> "This appears to be inconsistent data; hit OK for further information."
If needed, you can add an additional Edit Element (with the same criteria) following the Information Element to loop back to the appropriate place for reentering data.
Q: How do I setup a question to calculate the ages of respondents based on their birth dates?
A: You will need to use the AGE Function to create an Automatic Variable by: 1) entering AGE (or any other variable name that you would like to specify) in the Variable Name box; 2) selecting Numeric Calculation from the Type of Data to be Stored drop-down box; and 3) entering the following calculation in the Numeric Calculation/String Expression box:
where AGE is the Automatic Variable name; DOB is a previously collected Date Type Data Element for Birth Date; and TODAY is a previous Automatic Variable of type Today's Date.
Q: How can I display a range of dates in an automated interview? For example, if I ask "Did you, in the last 2 months (between DATE and TODAY), ?" and instead of (between DATE and TODAY), have "between Saturday, December 22, 2001, and Saturday, February 22, 2002" appear in an ACASI or CAPI interview?
A: You will need to create two Automatic Date Variables. First, to create an Automatic Variable named TODAY, type: Today's Date. Next, create an Automatic Variable named PAST60D and select String Expression from the Type of Variable drop-down box. In the Numeric Calculation/String Expression box, enter:
For your question text, use substitution tokens to display the values: "Did you, in the last 2 months (between &[PAST60D] and &[TODAY]), ?"
Q: How do I create a skip based on a question response that was Refused, Don't Know, Not Applicable, or Missing?
A: Insert a Skip Instruction Element with the following in the If*: box
VAR=.REF or VAR=.DK or VAR=.NA or VAR=.
Where VAR is the variable name for your question, .REF' is Refused; .DK is Don't Know; .NA is Not Applicable; and . is Missing.
Q: How can I set up an If statement to test for a condition and then return a response based on the condition?
A: The syntax for an If statement is:
IF(condition to be evaluated, return if true, return if false)
In other words, the IF() function takes three arguments: If the condition evaluates as true, the function returns the value of the first argument; if the condition evaluates as false, the function returns the value of the second argument. For example, in the statement:
IF(AGE > 10, "Eligible","Ineligible")
'Eligible" will be returned if AGE is greater than 10, or 'Ineligible" will be returned if AGE is not greater than 10.
Q: How can I skip over certain questions (elements) in a Table for only some categories in that Table?
A: If you want always to skip a question for a particular category, you can use Table Applicability. On the Applicability tab for the question to be skipped, select Include/Exclude Categories, then list the categories that do/don't apply for that question. (To help you list the categories, go to Tools|Table Categories while in the Applicability tab. You can then click on the categories to add them to the list.)
Q: How do you use Markers as skip destinations within Tables?
A: You cannot insert a Marker Element inside a table. You can designate a special Marker named NEXTCAT within a table for your skip destination. NEXTCAT will jump to the first element of the next category in the table. You can also set a destination for a Marker Element outside the Table as long as it is the first Element following the end of the Table.
Q: How do I enter long category labels for Table questions?
A: You cannot increase the maximum length (40 characters) of the Text (&TXT) substitute box on the Table Element tab; however, you can use the &TXT and &ALT fields together to create one long label. Continue your text from the &TXT field to the &ALT field without spaces (unless appropriate). For example, you could enter the following for this long label:
&TXT: Welfare/Food Stamps/Aid to Dependent
You should enter the substitution reference in the question text as: "Have you received any income from &TXT&ALT?'" This will appear as: "Have you received any income from Welfare/Food Stamps/Aid to Dependent Children?"
Q: How can I put a Data Element with a Check-Each Response Type in a Table?
A: The only Element types allowed within a Table are:
Data Elements (cannot use a Check-Each Response Type)
Data Elements with a Check-Each Response Type are prohibited. If you need to include this type of question in your Table, use a series of Data Elements with Yes/No Response Types instead. Information and Edit Elements are also not allowed.
"Cannot Open Bitmap File" Message
Q: What can I do about the message: "Cannot open Bitmap File C:\Program Files\QDSv2\Studio\Bitmap32\En\Keyed\Male-U.BMP. The standard QDS bitmap will be substituted."?
A: If your bitmap files are not installed with the default installation, C:\Program Files\QDSv2\Studio\Bitmap32\En, you will need to change the directory for button bitmap files. Go to Build|CAPI Application or ACASI Application, click the Options button on the Automated Interview Control File box, and select the External Files tab on the Build Options box. This is the case even if only the drive letter is different-e.g., D: instead of C:. If you do not change the options, QDS will use the default buttons.
Q: How can I use the keyboard for numeric responses in an ACASI interview?
A: You need to have the Use Keyboard for ACASI option checked on the Number and Date tabs on Options|Data Defaults in the Design Studio. Also, you need to check the Support Keyboard Input box on ACASI Build options. From the Design Studio, select Build|ACASI Application. Click the Options Button (bottom right-hand corner). You will see the Build Options dialog box; check the Support Keyboard Input box on the Operations tab.
Q: How can I exit an ACASI interview before it is complete?
A: To exit an interview where keyboard input is allowed, press Alt-F4 and supply the password (if password is required). When keyboard input has been disabled, move the mouse pointer to the upper left corner of the screen and simultaneously click the left and right mouse buttons. QDS will ask for the exit password. Select Cancel to continue the interview.
Q: How do I resume an ACASI or CAPI interview that was interrupted before it was complete?
A: To resume an interrupted, saved interview: 1) open your ACASI/CAPI Application; 2) select the Resume a prior interview radio button in the Open ACASI/CAPI dialog box; an Impending Interviews dialog box will open where Identifier(s) lists your Identifier Variable(s), Status displays the Interview status, and Started and Ended display the interview start/end date and time. (Clicking the Show All button displays Completed as well as Incomplete interviews); 3) Select the Interview you would like to resume and click OK. A dialog box will confirm which interview is resuming. You will return to the screen in the interview where you left off.
Q: How do I set up human recorded WAV files for an ACASI Interview?
A: You will first need to create your WAV files outside of QDS with recording studio software. You will need a separate WAV file for each Data Element|Text of Question, Information Element|Text, Edit Element|Display Message, and Pick-One or Check-Each Response set category. Next, to associate your WAV files, enter each WAV filename (minus the WAV extension) in the appropriate Audio File Name box. These are located on the Data Element tab for question text, Info Element tab for information elements, Edit Element tab for information elements, and Response Set tab category description dialog boxes for Pick-One or Check-Each Response set categories.
All Audio Files must be located in the same directory, and the path must be set using the Build|ACASI Application Build Options:
- From the Design Studio, select Build|ACASI Application and select the Options button
NOTE: The path must be replicated on any machine that will be used to administer your survey, and all WAV files must be copied to this path on any other machine.
Q: For an ACASI interview, how do you use a different computer-generated voice from the default (male) voice?
A: You can select different computer voices by embedding DECtalk® text-to-speech inline commands within the text of a Data Element or Information Element. These commands will not appear when the text is displayed, but will be passed on to DECtalk® as an instruction to alter the voicing or pronunciation of the text that follows. There are ten different DECtalk® voices to select from:
If you wanted to use Betty's voice for a question, you would enter the following into the text box on your Data Element: [:nb] This will be the first question . Betty's voice (female) will be substituted for the default male voice. You will need to add this command to each Element for which you would like to change the voice.
Q: How do I tell QDS to have the computer voice read Pick-List choices during an ACASI interview?
A: This is an ACASI Build Option. Go to Build|ACASI Application in the Design Studio. In the next window, click the Options button in the lower right-hand corner and go to the Audio tab. Check the Read Choices (text buttons) option box.
Q: Can I change how my CAPI/ACASI screen looks?
A: You can change some appearance aspects. Go to Build|CAPI/ACASI Application and select the Options button in the dialog box. To change options regarding how/when special code boxes are displayed, go to the Operations tab and check the appropriate option box. To select options for font size for questions and buttons, space allotted for question boxes, shape of standard buttons, and whether to display question numbers on the screen, go to the Appearance tab. Any changes made will affect all the screens in your CAPI/ACASI Application. The current QDS version does not allow you to change screen colors or appearance for individual screens. You can change background screen color by modifying your Windows settings in Start|Settings|Control Panel|Display.
Q: How can I remove the Don't Know and Refused to Answer buttons from my ACASI interview screen?
A: After you select Build|ACASI Application in the Design Studio, select the Options button on the Automated Interview Control File dialog box. On the Operations tab, check the option box Hide disallowed special response buttons.
Q: How do I display a very long question in an Automated Interview without the text being cut off?
A: You can change the space for all question text boxes under Build Options by: 1) going to Build|CAPI Application (or Build|ACASI Application) in the Design Studio; and 2) in the Automated Interview Control File dialog box, clicking the Options button and selecting the Appearance tab. You will see a Space for Questions box that contains a scaled-down image of the interview screen. Move your mouse to the bottom border of the white rectangle and drag it down to the desired size. You can make it as long as half the screen. Note that expanding the size of the question field will cause the size of your response buttons to be proportionately smaller for Pick-One and Check-Each lists.
Q: How can you display question numbers onscreen during an Automated Interview?
A: For both CAPI and ACASI, this is a Build Option. In the Design Studio, go to Build|CAPI Application (or Build|ACASI Application). Click the Options button on the Automated Interview Control File dialog box; go to the Appearance tab. Check the option box Show Question Numbers.
Q: Can you display more than one question on a screen in a CAPI or ACASI interview?
A: No. QDS is designed so that each screen displays one Data Element (question) or Information Element (informational text) at a time. This format makes it easy for interviewers or respondents to enter answers without error.
Q: When adding new interviews with the Data Entry program, I got the message: "The QDE Control File INTERVIEW DE.QDE does not match the specifications used to collect the interviews on file INTERVIEW DE.QPD." What does that mean?
A: All interviews in a single paper data file (e.g., INTERVIEW DE.QPD) must correspond to the same version of the questionnaire. Whenever you rebuild the Data Entry control file (INTERVIEW DE.QDE), there is a chance that the specifications have changed. The Data Entry program therefore insists that you begin a new data file for the new control file. To begin a new data file, enter a new code under Batch on the File Open Dialog box.
Q: How can you display Pick One or other Response Type lists in Data Entry?
A: To view and/or select response codes for any coded Response Type (i.e., Gender, Pick One, Check All that Apply, Yes/No, Rating Scale, Response Card): go to Code|Show List, click the Code List toolbar button, or use the predefined Function Key set under Data Entry Build Options, Windows tab, Function Keys. Click on the appropriate code value to enter it and return to Data Entry, or click Escape to return to Data Entry without selecting a value.
Q: How do I tell the QDS Data Entry Module to allow missing values?
A: Go to Build|Data Entry Application in the Design Studio and select the Options button. You will see the Build Options box. Select the Windows tab. Check the Allow a Missing Value for all non-ID fields option box. You Data Entry Application will now allow missing values.
Q: How can I enter a missing value in Data Entry?
A: In Data Entry, enter a missing value by going to Code|Missing, clicking the Missing toolbar button, or entering a [.]. A value of [.] will be recorded for missing values in your data file. Note that this command/button will be enabled only if the option to allow missing values was set under Data Entry Build Options.
Q: How do you conduct double-blinded key verification for data entry?
A: On the Open Data Entry dialog box, select the Verify Prior Interviews radio button. In this verification mode, the original responses are not displayed-except for text responses, which can be edited. Data entry personnel must reenter data in the same ID order as in the original keying; they will be prompted to reenter a response if the verification response does not match the first response. QDS generates a log detailing any discrepancies between the original data entry and the verification.
Q: I cannot locate all of my Data Elements in the Warehouse Manager. Are they there?
A: Yes. The confusion may be the order in which QDS lists variables in a Warehouse data file. First, all "base" variables are listed. Then, QDS lists all "component" variables; this includes month, day, and year components for date variables and each category for Check-Each Response Type questions.
Q: How do I reduce the size of a Warehouse file?
A: If you are running QDS V2.0 or higher, you can execute the Save and Compact feature. Open your Warehouse file (*.QDW) in the Warehouse Manager; go to File|Save and Compact. QDS will save the file under the same name. Files that have undergone significant editing, version reconciliation, and conversion will experience the greatest reduction in size.
Another way to reduce file size is to remove deleted cases. The QDS default setting specifies that deleted cases will be removed only when they exceed 50% of the file size. You can change this setting by going to View|Options in the Warehouse Manager and changing the percentage in the Remove Deleted Interviews When box. Setting the percentage to 0 (zero) will always remove deleted interviews from the Warehouse when it is saved. Removing deleted interviews will reduce your file size.
Q: How do I export all of my Warehouse interviews to SPSS, SAS, or MS Access?
A: When you export data from the Warehouse Manager, only cases in the Standard Version are exported. You must convert any nonstandard-version cases to the Standard Version before they can be exported. See Working With Multiple Versions in the QDS Manual or online Help for information on reconciling versions.
Q: How do I create a partnership with ActiveSync?
A: Before you create the partnership, it's generally a good idea to define a device ID for your Pocket PC. From the Pocket PC, select Start | Settings and then tap the System tab. Next, tap About then the Device ID tab. Next, enter a unique name in Device name. Then, tap ok.
Q: Where do I load the HAPI interview control file so that I can begin the interview process?
A: The control file should be copied to the "Qdsv2" subfolder within your Pocket PC's synchronization folder. If you don't know where to locate the synchronization folder, launch Microsoft ActiveSync on your desktop computer. From the menu, select Tools | Options to open the Options dialog box. Next, highlight Files on the list box and select the Settings... button. This will open the File Synchronization Settings box. This dialog displays the full path of the synchronization folder. Files in this folder will be synchronized with the "My Documents" folder on your Pocket PC.
Q: I keep getting an error message, "Synchronization finished. N unresolved items," from ActiveSync. What can I do to avoid this?
A: To clear this error condition, you can try one or all of the following strategies:
(1) Remove the Pocket PC from the cradle and then re-insert. Sometimes this clears the problem. (2) Make sure that the handheld is not still running an interview. From the device, start HAPI. If the screen displays the "QDS HAPI" picture, the last interview has completed. However, if you see a question or information screen, then an interview is still in progress. Tap Interview | End to save the interview with a status of "Incomplete". (3) Try terminating HAPI. First, select Start | Settings and then the System tab. Next, tap Memory. Next, tap Running Programs. Then, tap QDS HAPI. Then, tap Stop.
Q: When I attempt to enter a response to a numeric data element using Transcriber mode, the program keeps beeping. What am I doing wrong?
A: If you are having trouble inputting numbers, you might try changing Transcriber's Recognition mode to numeric. You can modify the mode via the command bar at the bottom of the screen. Tap on the icon that is second from the left to scroll through the options: "a" for all symbols, "A" for upper case letters, and "12" for numerals. Selecting "12" usually makes it easier for Transcriber to correctly recognize the input of numbers.
Q: When responding to a date type question, our subjects often do not know the exact day of the month. How do we handle this in HAPI?
A: You can enter the day of the month as either a space or question mark. For example, if the date is February 2005 and a full date format is required, you can enter, "2/?/2005" or "2/ /2005".
Q: When I tap on the "x" on the top right corner, the program disappears but continues to run in the background. How do I terminate the program?
A: Tapping on the "x" minimizes HAPI but doesn't terminate the program. If you need to stop HAPI, you have two options. Using Keyboard input mode, you can tap the "Ctl" key followed by the "Q" key. Alternatively, you can select Start | Settings and then the System tab. Next, tap Memory followed by the Running Programs tab. Next, highlight QDS HAPI and tap Stop.
In general QDS™ is backward, but not forward compatible – in other words, newer versions of QDS can use files created using an older version of QDS, but not the other way around.
Ideally, whenever you upgrade your QDS system, you should upgrade all components in order to avoid any possible version conflicts. However, we recognize that this is not always practical or even feasible. The following rules should help guide you in your upgrade decisions:
Control files created by an older version of the Design Studio can be used by a newer version of the data collection modules (i.e., ACASI, CAPI, HAPI, and Data Entry) – e.g., a control file created by v2.5 Design Studio, can be used with a v2.6.1 data collection module.
Control files created by a newer version of the Design Studio cannot be used by an older version of the data collection modules – e.g., a control file created by a v2.6.1 Design Studio, will not work with a v2.5 data collection module.
Data files created by older versions of a data collection module can be used with a newer version of the Warehouse Manager.
Data files created by newer versions of a data collection module cannot be used with an older version of the Warehouse Manager.
An exception, v2.6/v2.6.1
Because the only change between v2.6 and v2.6.1 was the migration to the AT&T Natural Voices text-to-speech engine, there is more compatibility between these two versions.
Data files created by v2.6.1 data collection modules can be used with a v2.6 Warehouse Manager.
Using the v2.6 Design Studio will still allow you to use the new AT&T Natural Voices text-to-speech engine (which is what the v2.6.1 ACASI module uses), however, you will not be able to select the voices from the Design Studio -- you would need to designate the default voice via the Windows control panel.*
* If you are running a 64-bit version of Windows 7, there is an operating system limitation that prohibits you from changing the voice from the installation default.