Dr. Brad Fain Georgia Tech Research Institute


Voice Recognition Software



Download 0.74 Mb.
Page7/8
Date05.05.2018
Size0.74 Mb.
#48141
1   2   3   4   5   6   7   8

Voice Recognition Software


Voice recognition software was defined as both software that can be installed on computers as an alternative input device and software that is embedded within other applications such as automatic telephone attendants and kiosks. Most respondents had very little experience with using voice recognition software, though respondents who were blind seemed to have slightly more experience with this category than people in the other disability groups. Tasks associated with this category were deemed fairly difficult to accomplish by respondents in all disability groups, especially using voice recognition software in public settings and over a headset. Respondents who were deaf rated all of the associated tasks as especially difficult.

Level of Experience


Respondents were asked to indicate their level of experience using voice recognition software on a four-point scale. Results are presented in Table 35. Values represent the mean value on the following scale: 1 = no experience, 2 = little experience, 3 = some experience, and 4 = very experienced. Users without vision had the most experience with using voice recognition software. Deaf users, in general, had little or no experience with voice recognition software.

Table 35: Level of Experience with Voice Recognition Software by Disability Type.



Disability Type

Mean (SD)

Blind

2.2 (1.3)

Low vision

1.8 (1.0)

Deaf

1.3 (0.6)

Hard of hearing

1.6 (1.0)

Upper mobility

1.9 (1.1)

Lower mobility

1.9 (1.1)


Difficulty Completing Device Related Activities


Respondents estimated the difficulty they had in personally accomplishing activities in the previous year due to physical or cognitive limitations caused by a disability. Results are presented in Table 36. Values represent the mean value on the following scale: 1 = little or no difficulty, 2 = some difficulty, 3 = great difficulty. Blind users reported little difficulty in using automatic voice recognition phone attendants and understanding computerized voices, perhaps because they tended to rely on voice interfaces as an alternative user interface more than other user groups. Most users reported difficulty in using voice recognition software to control the computer or in public settings. Deaf users in general could not use the software.

Table 36: Reported difficulty in Completing Voice Recognition Software Activities by User Type.






Blind

Low Vision

Deaf

Hard of Hearing

Upper Mobility

Lower Mobility

Using automatic voice recognition phone attendants

1.2 (0.5)

1.7 (0.7)

2.8 (0.4)

2.2

(0.9)


1.8

(0.9)


1.7

(0.9)


Understanding computerized voices

1.1 (0.4)

1.7 (0.8)

3.0 (0.0)

2.5

(0.7)


1.7

(0.8)


1.6

(0.8)


Using your voice to control your computer

2.2 (1.1)

2.5 (1.1)

2.5 (0.8)

2.3

(1.1)


2.1

(1.0)


2.1

(1.0)


Using voice recognition software in public settings

2.6 (1.0)

2.7 (1.1)

2.8 (0.4)

2.7

(0.9)


2.2

(1.0)


2.1

(1.0)


Using voice recognition software over a headset

2.6 (1.1)

2.3 (1.2)

2.9 (0.6)

2.5

(0.9)


2.2

(1.0)


2.1

(1.0)



Usefulness of Features


Participants were asked to estimate the usefulness of accessibility features associated with the device on a four-point scale. Values represent the mean value on the following scale: 1 = not useful, 2 = slightly useful, 3 = moderately useful, 4 = extremely useful. Features differed by disability type and therefore are presented as such.

Table 37 presents the results of the assessment of the usefulness of voice recognition software accessibility features for users without vision. Users without vision indicated that adjustable volume and the ability to control the parameters of voice playback were desirable accessibility features. Users also suggested that assistance with error correction was a very desirable accessibility feature with voice recognition software.

Table 37: Usefulness of Voice Recognition Software Accessibility Features as Reported by Participants without Vision.


Feature

Mean (SD)

Ability to adjust voice the speed of voice messages

3.5 (0.9)

Adjustable volume

3.5 (0.9)

Automatic suggestion of alternatives for voice recognition errors

3.5 (1.0)

Ability to replay voice messages

3.4 (1.1)

Ability to pause voice messages

3.3 (1.1)

Ability to request additional time

3.3 (1.0)

Ability to change voice types (i.e. male or female)

3.1 (1.1)

Table 38 presents the results of the assessment of the usefulness of voice recognition software accessibility features for users with low vision. The desirability of accessibility features reported by low vision users for voice recognition software was similar to that reported by users without vision. Notably the ability to adjust the volume and playback speed were ranked lower by users with low vision compared to users without vision, perhaps because of less experience with voice recognition software.

Table 38: Usefulness of Voice Recognition Software Accessibility Features as Reported by Participants with Low Vision.



Feature

Mean (SD)

Ability to replay voice messages

3.4 (1.2)

Ability to request additional time

3.4 (1.2)

Ability to adjust voice the speed of voice messages

3.3 (1.2)

Adjustable volume

3.3 (1.1)

Automatic suggestion of alternatives for voice recognition errors

3.3 (1.2)

Ability to pause voice messages

3.2 (1.3)

Ability to change voice types (i.e. male or female)

2.9 (1.2)

Table 39 presents the results of the assessment of the usefulness of voice recognition software accessibility features for users who are hard of hearing. Users who are hard of hearing ranked accessibility features associated with playback control as very useful. The ability to adjust the volume of the voice was also ranked as a desirable feature.

Table 39: Usefulness of Voice Recognition Software Accessibility Features as Reported by Participants that are Hard of Hearing.



Feature

Mean (SD)

Ability to adjust the speed of voice messages

3.6 (1.2)

Adjustable volume

3.6 (1.1)

Ability to pause voice messages

3.5 (1.2)

Ability to replay voice messages

3.5 (1.2)

Ability to change voice types (i.e. male or female)

3.4 (1.3)

Headset compatibility

3.4 (1.3)

Automatic suggestion of alternatives for voice recognition errors

3.3 (1.3)

Users with upper mobility impairments rated the automatic suggestion of alternatives for voice recognition errors (average score = 3.2; SD = 1.2) as being moderately useful. Users with lower mobility impairments rated wireless microphones (average score = 3.2; SD = 1.3) and adjustable microphones (average score = 3.0; SD = 1.3) as being moderately useful accessibility features of voice recognition software.

Appendix A: Georgia Tech Universal Design Survey


Thank you for choosing to participate in this important research. Your answers will assist us in judging the impact of efforts of Federal Government to promote accessible design practices. Please take your time and answer each question carefully. If you have any questions or if you would prefer a paper copy of this survey please email Dr. Brad Fain at brad.fain@gtri.gatech.edu or call 404-407-7261.
1. What is your age?

 18- 24


 25 - 34

 35 - 44

 45 - 54

 55 - 64

 65 - 74

 75 or older


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected. No Experience indicates that you have not had any experience with the activity in the previous 6 months.
2a. Please estimate the difficulty you have had in personally accomplishing the following activities in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

No Experience

Depositing money in a bank account









Retrieving money from a bank account









Determining my bank account balance









Receiving a phone call









Placing a phone call









Remembering a phone number









Attending lectures









Attending training seminars









Sending E-mail messages









Receiving E-mail messages









Using internet “chat” software









Using internet instant messaging software









Remembering appointments









Using a time management tool









Using a television remote control









Using a television program guide









Using voice recognition software









2b. As far as you know, do you have any conditions that would prevent you from being able to use the following products?







Yes

No

Automatic Teller Machine (ATM)





Cellular Telephone





Distance Learning Software





Computer-Based Training





Palm based Personal Digital Assistant (PDA)





Pocket PC based Personal Digital Assistant (PDA)





Television





Voice Recognition Software (such as automated telephone attendants that recognize voice commands)




2c. Indicate your level of experience with using Automated Teller Machines (ATMs).

Very Experienced

 Some Experience

 Little Experience

 No Experience


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2d. Please estimate the difficulty you have had in personally accomplishing the following activities using an Automatic Teller Machine (ATM) in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Locating an ATM







Locating an accessible ATM







Inserting the bank card







Remembering my PIN number







Entering my PIN number







Making a cash withdrawal







Making a deposit







Checking account balances







Printing a statement







Retrieving my receipt







Reading my receipt






2e. Indicate your level of experience with using Cellular Telephones.

 Very Experienced

 Some Experience

 Little Experience

 No Experience


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2f. Please estimate the difficulty you have had in personally accomplishing the following activities using a cell phone in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Locating your cell phone







Turning the phone on and off







Locking the phone







Unlocking the phone







Dialing numbers on the keypad







Recalling a stored phone number







Storing a phone number







Receiving a phone call







Receiving caller-id information







Accessing voice mail







Attaching a headset







Determining battery status







Determining signal strength







Detecting when the phone is in Roam mode







Receiving a text message







Sending a text message







2g. Indicate your level of experience with using Distance Learning or Computer Based Training software.

 Very Experienced

 Some Experience

 Little Experience

 No Experience


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2h. Please estimate the difficulty you have had in personally accomplishing the following activities using Distance Learning or Computer Based Training Software in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Reading E-mail messages







Using instant messaging software







Reading documents in Microsoft Word format







Reading documents in Adobe PDF format







Viewing presentations in Microsoft Powerpoint format







Using chat software







Taking a course on-line







Receiving computer based training






2i. Indicate your level of experience with using a Personal Digital Assistant (PDA).

 Very Experienced

 Some Experience

 Little Experience

 No Experience


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2j. Please estimate the difficulty you have had in personally accomplishing the following activities using a Personal Digital Assistant (PDA) in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Locating the PDA







Turning the PDA on and off







Adjusting screen contrast







Adjusting font sizes







Storing an appointment







Recalling an appointment







Receiving an alert (i.e. appointment notification)







Viewing the calendar







Storing contact information







Recalling contact information







Installing software






2k. Indicate your level of experience with using Television.

 Very Experienced

 Some Experience

 Little Experience

 No Experience


For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2l. Please estimate the difficulty you have had in personally accomplishing the following activities using a Television in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Turning the television on and off







Changing the channel







Changing the input source







Adjusting the volume







Activating closed captioning







Activating descriptive video services







Using picture-in-picture features







Adjusting picture quality settings







Accessing the program guide






Voice Recognition Software includes software that is installed on a computer that allows you to control the computer and input information via voice commands. In addition, Voice Recognition Software is commonly used in automatic telephone attendants that may be used at your bank. Finally, Voice Recognition Software is sometimes installed in products such as Talking ATMs or Talking vending machines.


2m. Indicate your level of experience with using Voice Recognition Software.

 Very Experienced

 Some Experience

 Little Experience

 No Experience
For the following question, Great Difficulty indicates that the activity was impossible to complete, could only be completed with assistance, took much longer to complete than expected or took more effort to complete than expected. Some Difficulty indicates that you were able to complete the activity but it took longer, required more effort, or could not be completed without a large number of errors. Little or No Difficulty indicates that you were able to complete the activity without assistance as expected.
2n. Please estimate the difficulty you have had in personally accomplishing the following activities using Voice Recognition Software in the previous 6 months because of a functional limitation caused by a disability.





Great difficulty

Some difficulty

Little or no difficulty

Using automatic voice recognition phone attendants







Understanding computerized voices







Having the computer understand your voice commands







Using voice recognition software in public settings







Using voice recognition software over a headset







2o. Product manuals are often available in a number of formats. Select the preferred format for product manuals or user instructions.

 Standard print

 Large print

 Electronic - web site

 Electronic - Adobe PDF format

 Audio tape

 Video instructions

 Other ________________________________________


3a. Do you have a condition that affects your vision that causes you difficulties?

 Yes


 No
3b. Describe your visual condition(s) from the following list of conditions.

 Blindness

 Low vision (blurred or obscured vision)

 Color blindness

 Other ________________________________________
3c. Which assistive technologies do you use?

 Cane


 Guide dog

 Magnifying lens

 Computer screen reader

 Computer magnifier



 Other ________________________________________
3d. Please estimate the usefulness of each of the following Automated Teller Machine (ATM) accessibility features for a person with your visual condition.





Extremely Useful

Moderately Useful

Slightly Useful

Talking ATM (ATM with voice displays)







Private headphone jacks for Talking ATMs







Volume controls for Talking ATMs







Pause control for Talking ATMs







Replay control for Talking ATMs







Voice recognition for Talking ATMs







Instructions provided in audio







ATMs that can be controlled by a cell phone or PDA







Braille keypads







Raised area (nib) on the '5' key







Large keys for the keypad







Keys on the keypad that are discernible by touch







Large fonts on the display







Large display screens







High contrast displays







3e. Please estimate the usefulness of each of the following Cellular Telephone accessibility features for a person with your visual condition.







Extremely Useful

Moderately Useful

Slightly Useful

Voiced menu options (equivalent of a screen reader for the phone)







Screen magnifiers (devices placed over the screen to magnify the display)







Adjustable volume







Braille keypads







Raised area (nib) on the '5' key







Larger keys on the keypad







Keypress feedback (beeps indicating a key has been pressed)







Talking battery level indicators







Talking signal strength indicators







One-touch dialing







Voice dialing







Vibrating alerts







Talking Caller-ID







Large fonts on the display







Large display screens







High contrast displays






3f. Please estimate the usefulness of each of the following Distance Learning or Computer Based Training Software accessibility features for a person with your visual condition.







Extremely Useful

Moderately Useful

Slightly Useful

Screen reader compatibility







Screen magnifier compatibility







Adjustable font sizes







Adjustable contrast







Graphics that are described in detail







Video that is described in detail






3g. Please estimate the usefulness of each of the following Personal Digital Assistant (PDA) accessibility features for a person with your visual condition.







Extremely Useful

Moderately Useful

Slightly Useful

Screen reader compatibility







Screen magnifier compatibility







Adjustable font sizes







Adjustable contrast







Large keys







Adjustable font sizes







Ability to adjust screen colors







High contrast displays







Large displays







Vibrating alerts







Speech recognition






3h. Please estimate the usefulness of each of the following Television accessibility features for a person with your visual condition.







Extremely Useful

Moderately Useful

Slightly Useful

Large buttons on the remote







Talking remote controls







Voice activated remote controls







Dedicated buttons on the remote control to control descriptive video services







Descriptive video services







Voiced on-screen menus







Voiced program guides







Ability to adjust program guide font size







Ability to adjust program guide font color







Ability to adjust program guide background color






3i. Please estimate the usefulness of each of the following Voice Recognition Software accessibility features for a person with your visual condition.







Extremely Useful

Moderately Useful

Slightly Useful

Ability to pause voice messages







Ability to replay voice messages







Automatic suggestion of alternatives for voice recognition errors







Headset compatibility







Adjustable volume







Ability to change voice types (i.e. male or female)







Ability to adjust voice the speed of voice messages






4a. Do you have a condition that affects your hearing that causes you difficulties?

 Yes

 No
4b. Describe your hearing condition(s) from the following list of conditions.



 Deafness

 Partial hearing loss

 Tinnitus (ringing)

 Other ________________________________________


4c. Which assistive technologies do you use?

 Hearing aids

 TTY devices

 Telephone receiver amplifiers

 Other ________________________________________
4d. Please estimate the usefulness of each of the following Automated Teller Machine (ATM) accessibility features for a person with your hearing condition.





Extremely Useful

Moderately Useful

Slightly Useful

Remote control (cell phone or PDA)







Visual alerts







Graphical instructions







Text equivalents for auditory information






4e. Please estimate the usefulness of each of the following Cellular Telephone accessibility features for a person with your hearing condition.







Extremely Useful

Moderately Useful

Slightly Useful

Adjustable volume







Amplified headsets







Loopsets for hearing aids







Hearing aid compatibility (phones designed to work with hearing aids)







TTY compatibility







Vibrating alerts






4f. Please estimate the usefulness of each of the following



Download 0.74 Mb.

Share with your friends:
1   2   3   4   5   6   7   8




The database is protected by copyright ©ininet.org 2024
send message

    Main page