NaviSpeech - Documentation
Contents
1. lis menetir ny Kelet Options Exit uu m Figure 4 Compass message Actual compass direction East 2 9 Display settings In the display settings menu one can change font size and select from pre defined color profiles The color profiles contain a color of the text and background these were suggested by visually impaired people They can select their preferred profile to see better the text on the display After changing a font size the text on the display 1s being changed and wrapped automatically You can scroll the text pressing joystick up and down buttons if it runs out of the display On 3rd edition devices the application supports portrait and landscape views as well Color profiles e Black text on white background with a background image Feh r alapon fekete e White text on black background Fekete alapon feh r e Yellow text on blue background K k alapon sarga e Blue text on yellow background Sarga alapon k k NaviSpeech 9 40 am NaviSpeech 0 12 am T D F D Bet m ret B s v NaviSpeech Exit Szinprofil OK Cancel Options Exit Tu UI sy 9 45 am Options Figure 5 Figure 6 Figure 7 Display settings Changed display properties Landscape view 2 10 Sound settings In the sound settings menu one can change the volume and speed of speech These functions were suggested by blind users Speed of speech is especially important for them Initially they could memorise everything bette2. s direction Em OK cancel m rci Figure 19 20 Leaving the itinerary 4 4 3 Losing connection with the GPS unit If the connection is lost with the GPS receiver unit that can cause switching off the device low battery Bluetooth fault etc the application notifies the user The GPS device must be restarted and the user has to connect to it again 4 4 Logging developer support The application 1s able to make a real time log that contains every relevant events actions and data what occurs during launching the application It can be very useful to check the working parse results for statistics etc and by looking for bugs as well on Symbian 2nd devices where on device debugging isn t available Logging is switched off in current version of NaviSpeech because the log file allocates a lot of space and must be removed regularly 11 5 Future plans Now our developer team is in connection with blind people who are testing the application on their smartphones They give useful advices from navigation and usability to resolve the guideline of development New functions are being developed taking their claims into consideration They suggested a route recording feature what will be the next phase of development If once it will be ready users can make itineraries by walking on their way along on and performing a keypress by the turns In the end of the route recording the application will save the planned itinerar
3. database to know about topological informations These fuctions can provide only guidance informations at the moment Keyboard functions in Manual placemark selection mode Set the previous placemark as actual Set the closest placemark as atual Set the next placemark as actual Get name of the actual placemak Get distance from the actual placemark Get the right direction toward the actual placemark Get actual geographical coordinates latitude longitude and altitude Get UTC time Get actual date Change keyboard mode to Normal mode Help Get the key functions Get actual compass direction if the embedded compass is turned on See chapter 2 8 dE Cc x ocOoco J1q guU BWNDN 2 5 Menu functions The functions are available from the menubar as well The menus are voice enabled so the name of the actual menu point is always read enabling to use it for blind people consequently they don t have to memorise the keyboard functions Furthermore the menu contains more functions and options than keyboard buttons Menu functions e Select trip tvonal kiv laszt sa see chapter 2 6 e Trip informations tvonal inf k e Actual placemark information Aktu lis pont inform ci e Get distance from the actual placemark T vols g az aktu lis pontt l e Check user s direction toward the acutal placemark Halad si ir ny ellen rz se e Other informations Egy b inf k e Actual compass direction
4. the menu on 2nd edition or from the Applications folder on 3rd edition Before you start NaviSpeech switch on Bluetooth on the phone and turn on the GPS receiver unit 2 4 Keyboard functions There are two keyboard modes Normal mode and Manual placemark selection mode The function buttons have the same role in both modes e eft button Entry the menu e Right button Exit here appears an exit confirm message you can confirm exit pressing the right or cancel pressing the left button 2 4 1 Normal mode In normal mode the main functions can be used connect to the GPS unit manually if the automatic connection failed or obtain basic informations if the GPS unit is connected and there 1s a valid GPS data Keyboard functions in Normal mode Connect to GPS if it isn t connected at the moment Get name of the actual placemak Get distance from the actual placemark Get the right direction toward the actual placemark Get actual geographical coordinates latitude longitude and altitude Get UTC time Get actual date Change keyboard mode to Manual placemark selection mode Help Get the key functions Get actual compass direction if the embedded compass is turned on See chapter 2 8 dE Cl OONDN Fe 2 4 2 Manual placemark selection mode In the manual placemark selection mode one can edit the currently trip as well Edit functions are reserved for future use if once the application will have a map
5. Menetir ny e Actual UTC time Pontos ido e Actual date Mai datum e Actual geographical coordinates F ldrajzi koordin t k e Settings Be ll t sok Connect to GPS Csatlakoz s a GPS hez Select navigation mode Navig ci s m d kiv laszt sa see chapter 2 7 Turn compass on off Ir nyt see chapter 2 8 Turn menu reading on off Men felolvas s Sound settings Hangbe ll t sok see chapter 2 9 Display settings Kjelz be ll t sok see chapter 2 10 o Help Seg ts g e Exit Kil p s NaviSpeech 9 33 am P dv zl m a navig ci s tvonal programban egyetem_moricz gtm Show open applicats tvonal kiv laszt sa Ut Menetir ny Eg Pontos id Be Mai datum Se F ldrajzi koordin t k Select cancel OK Cancel d ir Figure 2 Menu Figure 3 Trip selection screen 2 6 Trip selection The user can select the trip choosing the menu point Then appears a trip selection screen and the application reads and shows the name of selected trip file The trip selection screen one can handle by the following keys e Joystick Up Down Select the previous next file e Left button or Joystick Middle Load the trip e Right button Cancel if there was a loaded trip it remains in memory 2 7 Navigation modes There are more different navigation modes in the software these can guide the user on the trip more ways These are reserved for later for the same reason as the Manual placemark
6. NaviSpeech Documentation Team SpeechLab Team members Akos Viktoriusz Balint Toth Date 18th April 2008 1 Short description NaviSpeech is a GPS based navigation software for blind and visually impaired people Blind people have special needs They perform usually the same trips alone so they have to memorise them well It is a long and difficulty procedure takes at least a few days in the most of cases especially by the group of blind people who lost their sight in the near past Consequently a navigation software could be very useful for them to get feedback from the actual position It would make easier performing journeys without fully memorising the itinerary Furthermore nowadays using of public transport vehicles means a large problem for blind people as well because of the lack of satisfying informations So they would take very gladly a mobile navigation software that gives informations about a public transport system in the cities The current software was tested by blind people and they guessed it could become a fellow that will guide them if they would like to get to a place that absolute unknown for them The application using a Symbian version of a Text To Speech TTS software called Profivox developed at the Budapest University of Technology and Economics Department of Telecommunications and Media Informatics The texts are read by the TTS engine they aren t recorded in advance instead assembled in real time using a s
7. ds are mandatory The cell information field 1s optional If there isn t a valid GPS data the application can set the actual placemark obtaining the current network information and comparing wtih in the field stored ones This location service is avalaible only on Symbian 2nd using the keyboard in Manually placemark selection mode The URL fields are reserved for future use Example for trip file format that contains a walk around an Informatic Building of the University Walking around the Inofmatics Building of the University 01 Informatics Building North West corner 19 05922 47 471285 00 0000 02 Informatics Building North East corner 19 06057 47 47319 00 0000 03 Informatics Building South East corner 19 06282 47 471284 00 0000 04 Informatics Building South West corner 19 05977 47 471212 00 0000 3 2 Route planning via Internet There is available a way to plan the route using an Internet software One can easily do it by the following steps e Get the T Online map and route planning page http terkep t online hu One can move and zoom the appearing map now Find the place of the start placemark filling the City Telep l s and Street number Utca h zsz m fields on the left side panel and press the Search Keres s button hiba a t rk pen A Pont kijel l se amp t rk pen kattintott pont koordin t i beker lnek az Ker es es tvonaltervez be Cim Bird MEO elite Telepiiles Kitirit Hudape
8. l it to your computer e Open the downloaded trip file with GPS TrackMaker e Rename the placemarks clicking by right button on them Nev Etkez s Leiras M ricz sigmond kort r MES Figurel Figure 16 Placemark in GPS TrackMaker Rename placemark in GPS TrackMaker e Rename the file and save it e Copy the file to trip file folder on your phone see above Route planning via Internet from smartphone is under development The final goal is that once the user has only to give the address of the start and finish placemarks afterwards the application connects to a route planning software and loads the planned itinerary 4 Working issues 4 1 At the beginning Running the application it loads the Text To Speech engine Then tries to establish connection with the GPS unit via Bluetooth Indicates if anything failed After them one can obtain GPS informations and use the embedded compass if the GPS receiver provides a valid GPS data The application stores the Bluetooth address of the first attached GPS unit If one want to change to another device must delete the C Nokia Others NaviSpeech btaddr bin on Symbian 2nd or the C Data Others NaviSpeech btaddr bin on Symbian 3rd file or reinstall the application 4 2 Select trip If one need navigating on a trip one has to select it using the trip selection screen see chapter 2 6 After one can obtain informations about the trip 4 3 Begin navigatio
9. n To begin the navigation one have to go to the start placemark The application indicates it After one can check the right direction toward the actual placemark 4 4 Automatic messages and instructions The application notifies the user in following cases 4 4 1 Getting at the actual placemark If the user enters to the close range of the actual placemark the application notifies the user about this event and shows the right direction toward the next placemark NaviSpeech 10 33 am El rt k a z Magyar tud sok k r tja Warga L szl utca sarok tvonalpontot Placemark range K vetkez pont 3 REN Warga L szl utca User y Bogd nffy utca sarok Az el6z6 tvonalpont fel l n zve balra kell fordulni OK Cancel mu Figure 17 18 Getting at the actual placemark 4 4 2 Leaving the itinerary If the user leaving the right way the user s direction differs much from the right direction the application warns and guides the user to previous placemark It works only 1n Normal keyboard mode This function wasn t finished yet and may not work properly For example it may warn too late or not at all Our team is working on improving it To switch it off change to Manual placemark selection keyboard mode 10 NaviSpeech 10 45 am 0 Let rt az tvonalr l Forduljon meg Actual p lacemark visszavezetem az el z tvonalponthoz Right direction User User
10. nd menu The application was built on placemark based navigation the itinerary that contains placemarks could be planned more ways via text editor or Internet 12
11. pecial voice database It knows the construction of more languages but NaviSpeech supports only Hungarian language at the moment Profivox is available only on Symbian 2nd edition the 3rd version of the software 1s under development at the department The application announces every information and instruction in voice and shows them on the display as well After the application 1s started it tries to connect to the GPS receiver unit After the connection is successfully established the user can select the trip and start on the way During the working the application compares received GPS data with coordinates of the actual placemark and indicates if the user gets at it or gives warning if the user leaves the right way NaviSpeech 9 25 am E dv zl m a navig ci s programban 0 Seg ts g Options Exit omi e Figure 1 NaviSpeech splash screen message Welcome to the navigation software Press 0 to help 2 User s manual N 1 Hardware requirements e Symbian smartphone at least 2nd edition FP 1 or 3rd The application was tested on Nokia 6680 and Nokia N95 e Bluetooth e GPS receiver unit Nokia GPS device is preferred tested with Nokia LD 1W 2 2 Installation On Symbian 2nd edition upload the NaviSpeech_2nd SIS and TTS SIS on Symbian 3rd the NaviSpeech 3rd signed SIS installation files After uploading simply install them to the smartphone 2 3 Running application The application can be started from
12. r listening to slow speech After they gained some experience using the application they can increasing the speed of speech to obtain the necessary iformations more quickly NaviSpeech gasam P N Hangero savcoounas Besz dtemp jJ c OK Cancel r Figure 8 Sound settings 3 Route planning The application interprets the itinerary as a polyline its vertices are the placemarks those are given with identifier number description and geographical coordinates like latitudes and longitudes The user can make the trip file that contains the itinerary using a simple text editor or plan it via Internet Ready trip files must be placed to C Nokia Others NaviSpeech TripFiles folder on Symbian 2nd sC Data Others NaviSpeech TripFiles folder on Symbian 3rd By selecting trip the application browsing this folder 3 1 Route planning via text editor The itinerary that is processed by the application can be created using a simple text editor It has a specified file format with trp extension In the first line must be a short description about the itinerary it begins with a character The following lines contain the properties of placemarks in different fields those are separated by a tabulator character Each line ends as well with tabulator Placemark fields Identifier number Placemark name Longitude in degrees Latitude in degrees Cell information Image URL Description URL The first four fiel
13. selection mode by the keyboard modes see chapter 2 4 2 Collaborating with a map software these can become very useful functions beacuse the user doesn t have to begin the trip from the first placemark or if there is a nearly section between two placemarks the user can entry to the way through the closest point of this section Using these functions 1s deprecated besides the Normal mode Navigation modes Normal mode the basic mode guides the user from the start placemark to the finish Closest placemark gt Start placemark gt Finish placemark mode Closest placemark gt Start placemark gt Finish placemark mode Closest section gt Finish placemark mode Closest section gt Start placemark mode 2 8 Compass The application has an embedded compass that can show the basic compass directions like East North East etc The GPS has some approximately 4 5 meters imprecision therefore it cannot provide the exact positon instead sprinkles coordinates in a circle around the user So the sequental directions could be different from each other To resolve this emerging problem the compass gathering counted angles between two received positions and creates the average of them using a special mathematic algorithm to show the smooth right direction for the user The user can switch the compass from the settings menu and get the actual direction pressing the button 1f it s turned on A NaviSpeech 9 36 am Aktu
14. st 11 Utca hazszam Aricz Zsigmond k rt r i UtvonaltervezGbe ECCE Figure 9 Search form e If the result is appearing select the flag icon over the map and click to the right place on the map to create a placemark It will appear in the chart on the left side hiba a terkepen m kattintott pont koordin t i beker lnek az Utvonaltervez s Az indulasi es arkezesi itvonalpontokat est OT valamint az esellages koztes megallaxat fent END ___ keresd mag s vedd fel ide egyenkent az HI Utvonaltervezabe gombbal B Indulis hd 47 28 38 41 19 D2 51 58 X ra EE Erkez s ET X e Cine itvonaltervez s b 2d Figure 11 Create placemark Figure 12 Placemark on e Locate other placemarks in the same way It supports only 5 placemark per route e Press the Route planning Utvonaltervez s button left from the map L Indulas Ar eye gA 197025 69 Erkez s Ed 47 2036 35 19 0203 16 Lista oo tvanal nyomtat s tvonal t rl se teljes tvonal Utvonaltervez s gt tvonal let lt se GPS TrackMaker form tumban l Figure 13 Route planning button Figure 14 Download link e After it there will appear a link with a caption Download planned route in GPS TrackMaker format tvonal let lt se GPS TrakMaker form tumban under the map Activate it and save the gtm file to your computer e Download GPS TrackMaker software from http gpstm com and instal
15. y to a file that will be selectable in the trip selection screen We are working on improving quality of navigation with increasing precision of GPS service in software way Researching and implementing different mathemathic algorithms can hide errors of the GPS locating Theoretical researchs in this theme are pending at the moment Realising the real time route planning through the user interface of the phone is our target now as well This way using the sofware could be detached from the PC so users don t have to plan the itinerary in advance and could get to immediate emerging targets Wi Fi service is available now on Symbian 3rd devices to make this function free We are intent to make this application able to collaborate with a map software to get more informations from the streets and manage the route planning if there isn t available Internet access A map handling software must know public transport system as well to help people to use different vehicles To realise it we have to contact a map developer firm what specialised for mobile devices Using functions of a map software that knows the traffic rules could enable navigating in different vehicles in the future 6 Summary NaviSpeech is a GPS based navigation software for blind and visually impaired users running on Symbian smartphones Navigation 1s possible through voice feedback and informations enabling to use it for target consumers Users can handle it through keyboard buttons a
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