VAJA Speech Recognition Module User Manual
Contents
1. VAJ A Speech Recognition Module User Manual v1 0 Enable Your Design ThaiEasyElec com lll Copyright O 2008 ThaiEasyElec All rights reserved Disclaimer This document is intended only to assist the reader in the use of the product ThaiEasyElec com shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product Enable Your Design ThaiEasyElec com lll ee VAJ A Speech Recognition Module Content Specifications 3 Basic knowledge 4 Board s Components 5 Operation Mode 6 Display Mode 7 Jumper and DIP Switch Configuration 8 Firmware Downloading 9 Quick Start 10 ThaiEasyElec U28 HOST BOARD Driver Installation 15 VAJA 1 Command s Details 18 The meaning of return code 29 Firmware s flowcharts 31 Schematics 32 Enable Your Design 3 ThaiEasyElec com lll a eae e 10 11 12 13 14 15 16 On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Specifications Use VR Stamp 8 bit processor module from Sensory for speech recognition 14 32 MHz clock freguency 16 Mbits flash memory for storing 31 voice commands and recording sound up to 253 secs Serial EEPROM for storing configuration up to 8 patterns 50 messages to be shown on 16x2 character LCD and 31 events after recognition Build in microphone and audio jack for external microphone2. An audio jack for connecting headset or speaker set A terminal block with amplifier for using with normal speaker DIP switch for selecting microphone s gain and a socket for connecting resistor to make custom gain 16 pins IDC header for 16x2 character LCD with variable resistor for adjusting LCD s contrast 8 digital output ports Use RS 232 a separate RS232 converter chip eg the MAX3232 1s necessary to upgrade firmware Compatible with ThaiEasyElec U2S_HOST Board to communicate and powered via USB SVDC 2 5mm power jack with a 3 3V regulator 2 modes available text mode for use with Hyper Terminal and silent mode for use with microcontroller computer application or standalone using 1 push button switch and 1 reset switch 4 LEDs for indicating module s function I LED for showing module s sleep mode 1 LED for showing POWER status 2 jumpers for selecting power source and operation mode Enable Your Design 4 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Basic knowledge Speech recognition is a system that can memorize and recall voice from user VAJA 1 is speaker dependent recognition type Speaker dependent recognition is a speech recognition that recognition result depends on specific user or speaker Speaker dependent recognition has three steps in recognition process 1 Training Train system to know words 2 Template storage Store voice data into mem
3. 1 usually sends result to serial port after it succeeds recognition However you can set a command to cause it work automatically when finishes sending result But not all command you can set by 64 you can choose only 1 from 3 These 3 commands are 31 play sound 51 send output and 63 load LCD s message This command 64 uses number 0 3 to represent each of them and call event of word That is 0 None set If you select this choice VAJA 1 will send result to serial port Play sound 31 After send result it will play recorded sound 2 Send output 51 After send result it will send output 3 Load LCD s message 63 After send result it will load LCD s message When you use this command it requires 3 data First you have to set a desired word s number Then choose an event choice 0 3 Finally set parameter for event s command as same as you use these commands in usual way For example you want to set VAJA 1 to send logic 1 to port 6 when you say word 4 You have to send data like this 64 Enter 4 Enter 2 Enter ol Enter Group 7 LED Usage 70 All LEDs on Use for turn on all 4 LEDs 71 All LEDs off Use for turn off all 4 LEDs Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System 72 LED1 on Use for turn on LEDI 73 LED1 off Use for turn off LED 1 74 LED2 on Use for turn on LED2 75 2 LED2 off Use for
4. 1s logic value such as 61 for port 6 and logic 1 Enable Your Design 24 ThaiEasyElec com lll MH VAJ A speech Recognition Module Because port 0 4 share output with LCD so do not use port 0 4 when you use LCD You can use only port5 7 if you want to use LCD Range 0 7 for left digit 0 1 for right digit Default none IT you assign the parameter out of range the system will return an error code 51 Send character to LCD Use for sending character to LCD When you use this message that you type will appear on LCD immediately and stop when you press Enter or send 16 characters But its cursor does not move to the next line when it stops You have to use command 52 and 53 to move it Range Same as ASCII code Default none 52 Move cursor to line 1 Use for moving the LCD s cursor to the first line Range no parameter Default none 53 Move cursor to line 2 Use for moving the LCD s cursor to the second line Range no parameter Default none 54 Clear LCD s screen Use for clearing LCD s screen Range no parameter Default none 55 Send LCD s command code Use for sending LCD s command code For details please see your LCD s datasheet Enable Your Design 25 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Range see LCD s datasheet Default none 56 Initialize LCD Use for initialize LCD Please use th
5. 33 VAJ A Speech Recognition Module Enable Your Design ThaiEasyElec com On Line Electronics Shop for Embedded System Schematics Cont AS d IND GT dome d E EI dato d 3I ee mo T Sot O I AG NO OH v HO Ja oT E ui US t E D OLY EAE ECO UE d SO Qo TT d fo Ao Li d SS ea ol AS ae SJ Ld Ud Sd Eb SES Dada OS SC CL DIAS d SQ CLYDLTd FO dono d 6 S L E S 5 t 3 l uod NMW L Ar 3 HDODIOL Adee 32 IND Si mo ma OL AOL ee Elita o AS IND Z i NI NHMOd Id MM Me beirut pens t def eui AS ENSE db Hoth 34 Enable Your Design ThaiEasyElec com On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module ON ON Jayeads wong at a SCC CINE tz im UI PHL FI Tmo tJ a WOOF Q GES Anp Fl d IN Yael e mt q Ht Q o NO NO RT i AUUT 2 Fo 432 Vas CAE x o LEOUIO VIS DUI osvas s T Is vas am pe EISE CAE NYPSOPRLLV 35 Enable Your Design ThaiEasyElec com On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Schematics Cont JIN E ng o 912 p s UED O0I
6. 0 xxx is for speech recognition result and 00 is for general command For example 00 003 mean recognition successful and the result 1s word 3 2 Failure case VAJA 1 will send 99 xx or no response when it fails Where xx is error code that set by Sensory and ThaiEasyElec com The meaning of error codes are explained 1n the following table The meaning of error codes ERR_DATACOL_TIMEOUT ERR_DATACOL_TOO_LONG ERR_DATACOL_TOO_NOISY ERR_DATACOL_TOO_SOFT ERR_DATACOL_TOO_LOUD ERR_DATACOL_TOO_SOON ERR_DATACOL_TOO_CHOPPY ERR_DATACOL_BAD_SETUP timeout no data too long memory overflow too noisy spoke too soft spoke too loud spoke too soon too many segments too complex invalid setup ERR_RECOG_FAIL ERR_RECOG_LOW_CONF ERR_RECOG_ MID CONF ERR RECOG BAD TEMPLATE ERR RECOG SIMILAR recognition failed recognition result doubtful recognition result maybe invalid sd sv template too similar to another template Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System 17 ERR RECOG DURATION 30 VAJ A Speech Recognition Module bad pattern durations 31 ERR RP BAD LEVEL 32 ERR RP MEMORY FULL ERR RP TIME EXPIRED ERR RP PATGEN SILENCE ERR RP XMEM IN USE ERR RP BAD PTRS ERR RP EM IN USE ERR RP NO MSG ERR RP MSG EXISTS ERR RP BAD MSG Cx Internal errors all Please report to Sensory if an internal error is returned illegal compres
7. S A 5 B8 ahh Ou o c _ 2 A 1 m m l u S O ci S EP o mm e ES lt r d a E S N zu A o o uu E ge O y o c ars 2 On 5 N e VN 99 xx on your screen That mean training 1s error The xx is error code and you can find the meaning in this manual D show 13 Train a word by typing 10 You will hear the voice Please say word one and you have to speak your command Then you will hear Please repeat and you have to speak the same word If the training success you will see OK Then you will hear Please say word two You should press SW1 to stop training because this example uses only voice command But if the training 1s error It will beep and not continue to next word You have to train 1t again Sometimes 1t will 14 Enable Your Design ThaiEasyElec com lll men VAJ A Speech Recognition Module 10 Plaese say word Hu Connected 0 02 52 Auto detect 57600 amp N 2 14 Use recording command by typing 30 and d 15 You have to assign a voice message number This example is assign to 1 16 Speak any words that you want in 3 seconds If time 1s up it will show Error Time expired normal termination for Record This is not an error But it only tells you the time 1s up and stop recording Your voice was recorded 30 Record message number Am Error ime expired normal termination for Record SB ON MOM Connecte
8. SRRASRRS K da e br um J MW Ox t tw je EE ae Led M mii VAJA i D say NL E TY 5m d en Lad i Yn MIA Q id E ris HEI oe E ce COSI ee FEITEEFFFEE E CE UU uu a ww eae ee d K3 E i e NU LI j RFSEBU USNDODNDUNRE a E A 6 Connect your speaker 7 Connect USB cable to computer You will hear a short beep 8 Open Hyper Terminal and set to 57600 8 None 2 None Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module COM4 Properties Fort Settings Bits per second Data bits Parity Shop bits Flow control 9 Press the reset button If you see 99 19 It is work 12 13 VAJ A Speech Recognition Module Enable Your Design ThaiEasyElec com On Line Electronics Shop for Embedded System 5 O 2 c o S CN gt Gr Sg n X mg m y o a ZS 30805 E ey LE or om G so el kel kel i c D os m mm de ON ae CH CG o SONOS D os SA E KE n C el kel kel LC o gt m Fe T o E d E x SON CH S L i x rJ del e a m ZS o m mm S d a op 9D 385 YOON a E A 2 SON ON 3 ic o o d kel Ln o gt mm m dc SON D c H d o Ke d kel kel ge L c D P mr d ec KR E CN CN ZEE e T O Tu kel Lu T pl Bee Q xd m m 4 m pl n pj c 1 r Cr o
9. a character 0 or 1 to VAJA 1 to choose display mode If you send O it will enter silent mode And it will enter text mode if you send 1 About display mode you can read in Display Mode article In command mode you can send any text command to VAJA 1 by serial port If you connect VAJA 1 to computer the easiest way to send command is using Hyper Terminal and keyboard If you use microcontroller you can use UART to send character to VAJA 1 When you want to back to speech recognition mode you have to send a character star Then it will return to speech recognition mode Enable Your Design 7 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Display Mode 1 Text mode This mode is appropriate for new user or simple use because it easy to understand and send command Every communication is text base thus you can use keyboard to type command and see response messages form VAJA 1 in format that you can understand by Hyper Terminal 2 Silent mode This mode just sends results and status numeric code to serial port You cannot see what you send 1f you use Hyper Terminal But you will see a lot of number such as 00 003 or 99 03 However this mode is suitable for using with microcontroller or PC application software such as VB Delphi etc Use COM Port for PC or UART for microcontroller to send command to VAJA 1 Because o
10. ch record and you can assign number 0 254 But in practical VAJA 1 has only 253 minutes for all record and minimum time you can set for recording is second So it is impossible to make 256 records in the same time However you can assign number 1 3 18 and 254 for 4 records in the same time Range 0 254 Default none If you assign the parameter out of range the system will adjust to 255 that cause to be an error and can not start recording 31 Play Use for playback voice message that you have recorded Range 0 254 Default none Enable Your Design 21 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module If you assign the parameter out of range the system will adjust to 255 that cause to be an error and cannot start playing 32 Copy message Use for copying a stored voice message to a new desired number Range 0 254 Default none If you assign the parameter out of range the system will adjust to 255 that cause to be an error and cannot copy it 33 Delete message Use for deleting a stored voice message Range 0 254 Default none If you assign the parameter out of range the system will adjust to 255 that cause to be an error and cannot delete it 34 Message existence Use for checking a voice message that number exist in the memory or not Range 0 254 Default none If you assign the parameter out of range the syst
11. d 0 09 44 Auto detect If you would like to listen to your voice message type 31 and vi Then type a voice number For this example it is 1 17 Set an event after recognition by typing 64 You have to fill 3 numbers by typing a number which you want and e for 3 times In this example it is 1 all 64 1 Choose a number of word 1 31 me Choose an event of word 0 3 Enter event s parameter 1 Saving Complete 18 Type 11 you will hear VAJA 1 say Please say word You have to say the word that you have trained in 1 second If it has no error VAJA 1 will play voice message that you have recorded Enable Your Design 15 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module ThaiEasyElec U2S HOST BOARD Driver Installation 1 Connect ThaiEasyElec U2S_HOST_BOARD to your computer It will show the window as the following picture if it does not install automatically Hardware Update Wizard Welcome to the Hardware Update Wizard This wizard helps you install software for USB Serial Part LOM4 If your hardware came with an installation CD or Floppy disk insert it now What do pou want the wizard to do CO Install the software automatically Recommended Click Next to continue 2 Choose Install from a specific location and click Next 3 When you see the window as the followi
12. e large gain Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Firmware Downloading 1 Connect VAJA 1 with computer by serial port You can use ThaiEasyElec U2S_HOST_BOARD or RS 232 converter circuit to connect them 2 Set jumper to Program Mode l 3 Press Reset switch You will hear a beep sound 4 Open Sensory Loader 4 set it as you see in the picture In the Port field you have to choose serial port that you want to use In the File field click at and choose a file hex or dat you want Sensory Loader 4 v1 6 2 Fort Cord Baud 9600 EIS m Ce ntel Hex Ze Lnde Lonst t Binary C Data 5 Click Download button and wait while it work 6 Change jumper setting to Run Mode EI and reset the board Then you can use it 10 Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Quick Start 1 Install ThaiEasyElec U2S_HOST_BOARD driver 2 Set jumper to select power source from USB le j 3 Set Jumper to Run Mode E 4 Set DIP switch number 3 to ON position HIT 5 Connect ThaiEasyElec U28 HOST BOARD with VAJA 1 and set jumper to 3V3 Enable Your Design 11 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module ch v La O Ss ee ei 9 BARRSRRRRRARR
13. e this command once before using any voice command at first time When you use this command VAJA 1 will prompt you to say the first voice command If the first command is success it will prompt you to say the second to the thirty first command If training for each command is success VAJA 1 will return a response to serial port In text mode it sends message OK And in silent mode it sends 00 But if training 1s fail it will send an error code And details of the codes meaning are in Meaning of Return Code article You can stop training by pressing SW button 11 Recog SD Use for let the system listen to your voice and recognize it by Speaker Dependent method If it has no voice data in memory it will send an error code 99 19 in silent mode or nothing trained in text mode Enable Your Design 19 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module If it has trained word in memory VAJA 1 will listen to your voice for 1 second or any time you set During listen to your voice LED1 will turn on In case of success it will work as you set in command 64 Set event after recognition However 1f recognition fail it will send an error code 12 Recog SDF Use speech recognition by Fast Recognition method 13 Recog SDWS Use speech recognition by Wordspot method 14 Erase word Use for erase all trained words and sound that you have
14. em will adjust to 255 that cause to be an error and cannot check it 35 Space Use for checking available space for recording in second unit Range no parameter Default none 36 Get bit rate Use for checking compression level for recording Range no parameter Enable Your Design 22 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Default none 37 Erase record Use for erasing all voice message entire the memory Range no parameter Default none Group 4 Sound Record Setting 40 Set record time Use for set maximum time for each record in second unit O for no timeout that is time up when the memory 1s full Range 0 253 Default 3 If you assign the parameter out of range the system will adjust to default value 41 Set record mode Use for setting recording mode VAJA 1 has 4 options that you can choose more than one or not choose anything The options are 1 Threshold silence save silences as silence blocks saves space 2 Trim initial Trim initial silence 3 Trim final Trim final silence 4 Detect pops Detect pops If trimming is also in effect then trim pops If threshold is in effect replace pops with silence blocks You have to send U or 1 to choose or not choose for each option 1 for choose and 0 for not choose If you assign the parameter out of range you will have to choose again until y
15. er for power source selection 11 5VDC power jack 12 16x2 character LCD s socket 13 Power indicator 14 Jumper for mode selection Program Run 15 Sleep status indicator 16 Reset switch 17 Serial flash AT45DB161 18 Output amplifier 19 Terminal block for speaker 20 Audio output 21 Custom microphone input 22 Board s microphone Enable Your Design 6 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Operation Mode VAJA1 Speech Recognition has 3 operation modes Speech recognition mode It is default mode that work when you power on or reset the VAJA1 Speech Recognition board It waits to receive voice command every 1 second automatically until go to sleep mode So you can speak command continuously If it has no any respond please speak again Because you may not speak in voice receive interval or speak do not like the voice that you have trained 2 Sleep mode In speech recognition mode when the time 1s up it will enter sleep mode The Power Down status LED will on and the system cannot receive command until it receive double hand clap voice Received double hand clap voice it will wake up and enter speech recognition mode When sleep mode is start the system use 3 seconds to setup timer and you cannot wake 1t during this 3 second unless reset 1t 3 Command mode You can enter this mode by press SW1 for 2 seconds Then you have to send
16. f the limitation of code size in VR Stamp using as standalone device may be small provide for your work But plenty of command in VAJA 1 firmware can provide your work widely if you just add a small microcontroller or create a small software to control it Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Jumper and DIP Switch Configuration ALLE LELLE 3 Ww ile im nm EN nw Y F EK Kb D A TUELL 1 Jumper at number 1 use for select Run Program Mode If you choose E f it will be in Run Mode But if you choose L it will be in Program Mode that use for download firmware to VR Stamp 2 Jumper at number 2 use for select power source If you choose it will use power supply from USB ThaiEasyElec U28 HOST BOARD But if you choose It will use power supply from 5VDC adaptor 3 DIP switch at number 3 use for select both board s microphone and external microphone input gain You can select by switch one of them to upper position Switch number 1 provide small gain number 2 is medium gain number 3 is large gain and number 4 is custom gain You can put a resistor at a socket next to the DIP switch to make your input gain The more resistance will provide more gain You should select one of them because nothing selected switch will cause very small gain According to this picture this is an example for setting th
17. is command before using LCD Range no parameter Default none Group 6 EEPROM Usage 60 Save setting Use for saving all setting both speech recognition and sound recording to EEPROM And you can save up to 8 setting patterns A pattern of setting is call slot Thus you have 8 slots to save Range 1 8 Default none If you assign the parameter out of range the system will return an error code 61 Load setting Use for loading setting in EEPROM However VAJA 1 does not check which slot is empty If you load an empty slot it will load OxFF for all setting and cause many problems So be careful to load any slot Range 1 8 Default none If you assign the parameter out of range the system will return an error code 62 Save LCD s message Use for saving message to show on LCD to EEPROM You have to assign message number for each saved message Range 1 50 Default none If you assign the parameter out of range the system will return an error code Enable Your Design 26 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module 63 Load LCD s message Use for loading LCD s message form EEPROM You have to choose a message number to load it Range 1 50 Default none If you assign the parameter out of range the system will return an error code 64 Set event after recognition Although you have never used this command VAJA
18. lar word Thus the system will reject training for that word This command 1s use for set difference level between trained word and word that you have being trained in order to accept new trained word The higher level will increase possibility of the system to decide new word is similar to trained word in memory Range 1 50 Default 12 Enable Your Design 20 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module If you assign the parameter out of range the system will adjust to default value 23 Set maximum time to wait for speech set_timeout Use for set time in second to wait for receiving voice command in recognition process Range 0 255 Default 1 If you assign the parameter out of range the system will adjust to 255 Value O mean no time out 24 Set time to wait for a second utterance set_sepSil Use for set time to wait for a second utterance separate silence in 0 25 seconds unit Range 0 255 Default 2 0 5 sec IT you assign the parameter out of range the system will adjust to 255 25 Set maximum number of utterances to analyze set maxWrd Use for set maximum number of utterances to analyze Range 1 4 Default 2 If you assign the parameter out of range the system will adjust to default value Group 3 Sound Record Usage 30 Record Use for recording voice message for playing back You have to assign message number for ea
19. ng picture You have to choose the option like this Hardware Update Wizard Please choose your search and installation options e 2 Search for the best driver in these locations Use the check bores below to limit or expand the default search which includes local paths and removable media The best driver Found will be installed Search removable media floppy CD RUM Include this location im the search M J Ci Don t search I will choose the driver to install Choose this option to select the device driver from a list Windows does not guarantee that the driver you choose will be the best match for your hardware 4 Click Browse and choose the folder that contains the driver Then click OK The driver is already in CD Enable Your Design 16 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Browse For Folder Select the Folder that contains drivers Far your hardware GJ Desktop ES El My Documents H ry My Computer ES My Documents amp J My Network Places a G S82 Serial Driver LH amd amp 4 i386 To view any subfolders click a plus sign above 5 Click Next and Windows will install the driver Then click Finish 6 It may be show the window as in the first step You have to repeat the step you have done again 7 If you finish the installation you ha
20. ory 3 Recognition Receive voice and compare with voice data in memory Then send result to the user Thus the word that the system can recall must be the trained word in memory Sensory s Fluentchip Technology has special functions called Fast Recognition SDF and Wordspot SDWS SDF use multi tasking process Thus it works faster However it may be overload or hard working especially the system that receive many input signals in background For SDWS technology the system is focus on interested or trigger word It receives voice until found a trigger word So this technology is appropriate for long word such as watermelon or go to sleep But it is not appropriate for too short or too long word such as call or answer incoming call Because too short word is not enough data and too long word has too much data Note In Thai language va Ja means speech Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Board s Components 1 KI Dn pr onn 1 8 DW NM EE TU HIE 1 VR Stamp Module 2 LED 3 Output port 4 DIP switch for microphone s gain selection 5 Socket for custom gain insert a resistor 6 Serial EEPROM AT24C64N 7 Variable resistor for LCD s contrast adjusting 8 ThaiEasyElec U28 HOST BOARD USB to Serial socket 9 Switch for using some purpose SWI 10 Jump
21. ou send U or 1 Range 0 1 Default O 0 0 0 choose nothing none set 42 Set play mode Use for set playback speed Send 0 for normal speed or 1 for fast speed Enable Your Design 23 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Range 0 1 Default O If you assign the parameter out of range the system will adjust to default value 43 Set play volume Use for setting playback volume attenuations 0 0 db Min volume atten 1 2 2 db 2 4 5 db 3 6 7 db Max volume atten Default O If you assign the parameter out of range the system will adjust to default value 44 Set bit rate Use for setting compression level for recording 0 is 4 bits per sample and 1 is 8 bits per sample The number of bits used to store each sample in a voice recording Larger compression levels result in higher quality recording smaller levels require less memory Because of other data stored in the recordings the memory savings from recording at 4 bit rather than 8 bit 1s approximately 6 11 Range 0 1 Default 1 If you assign the parameter out of range the system will adjust to default value Group 5 IO Usage 50 2 Send output to digital output port Use for sending digital output 0 and 3 3V to output port for 1 bit To send it assign port number and logic value in the same set The left digit is port number and the right digit
22. recorded This command will format entire flash memory both voice command part and sound recording part Group 2 Speech Recognition Setting 20 Set strictness for training set_strict_t Use for set strictness level for training process In training process you have to say at least 2 times to let the system compare and average of 2 voice data Thus speaking in different speed tone loudness or other parameter will not accepted by the system Strictness level use to determine limit of difference that the system will accept your voice You have to set parameter for this command This parameter is strictness level from 1 to 5 So you have to send 20 7 x where x is an ASCII character form 1 to S The more value you assign will cause difficulty of training Default setting is level 3 If you assign the parameter out of range the system will adjust to default value 21 Set strictness for recognition set_strict_r Use for set strictness level for recognition process In recognition process the system will compare voice in memory with voice that is received from user Therefore higher level will be hard to recognize but lower level may cause the system confuse with two or more similar sound Range 1 5 Default I If you assign the parameter out of range the system will adjust to default value 22 Set difference of sound for training set diff It 1s not necessary 1f you would like to train simi
23. s IDE ATAJATAPI controllers 1 Sa IEEE 1394 Bus host controllers x Keyboards ei Mice and other pointing devices Be Modems E Monitors BB Network adapters NVIDIA Network Bus Enumerator Ports COM amp LPT a Bluetooth Communications Pork COME USB Serial Pork COPI a Processors Ea SC ST and RAID controllers Secure Digital host controllers HAH i Enable Your Design 18 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module VAJA 1 Command s Details Command s Format VAJA 1 use numerical command to command it The format is Where AA is command number that must be in the braces B 1s data value or parameter And lt is Enter v or carriage return ODh And every time it works it will return response in format XX YYY Where XX is 00 no error or 99 error If XX is 00 YYY will be the result of recognition And 1f XX 1s 99 YYY will be the error code Note The return code both XX and YYY are follow by a space 20h and not have a 0Dh Parameter Some commands not have parameter while some commands have parameter But every parameters have their limit for each command You should assign parameter value in the limit of each command Group I Speech Recognition Usage 10 2 Train Every voice command you would like to use with VAJA 1 must be trained before let the system to learn your voice and memories it So you must us
24. sion level in recording recording ended because of memory limit recording ended because of time limit recording ended patgen detected silence external memory in use start end ptrs incompatible interrupt vector in use message does not exist message already exists illegal message number CO ERR SW STACK OVERFLOW software stack full FC ERR INT SYNTH FD ERR INT RP speech SxTalkHandler rec play StopRPRec StopRPPlay FF ERR INT BLOCK block BlockHandler BfeHandler E o 19 ERR NO TRAINED No trained word in memory cannot access 55 ERR INVALID PARA Invalid parameter Enable Your Design 31 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Firmware s flowcharts Command Mode From recog mode Recog Mode start Timer T o Recog success YES start Timer NO Yes Go to recog mode Yes Enter Mode Go to command mode command is true Yes Do command ves Go to sleep mode Sleep Mode From recog mode Double hand clap Yes Go to recog mode 22 Enable Your Design ThaiEasyElec com On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module Schematics AUT 0 Qm m M ur HN diid M Papas UI AIL d HO Vas Aa HII Ys IHA EEEE OS YES ums gn H li H H LU H toll ool c M ead e
25. turn off LED2 76 LED3 on Use for turn on LED3 77 LED3 off Use for turn off LED3 78 LED4 on Use for turn on LED4 79 LED4 off Use for turn off LED4 Group Miscellaneous 80 Set timer VAJ A Speech Recognition Module 27 Use for setting timer that countdown to sleep mode in minute unit This timer counts when VAJA 1 works in recognition mode only Thus no sleep in command mode You have 7 choices to choose 0 1 3 5 10 20 and 30 that 0 1s no timeout Range O 1 3 5 10 20 and 30 0 is no timeout Default 3 Enable Your Design 28 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module If you assign the parameter out of range the system will adjust to default value 81 Clear event Use for erasing all events that you have set by command 64 VAJA 1 will Just send result to serial port for all 31 voice command Enable Your Design ThaiEasyElec com lll On Line Electronics Shop for Embedded System 29 VAJ A Speech Recognition Module The meaning of return code Because VAJA 1 has simple protocol every time that VAJA 1 finishes working it will send message to tell its success or error These messages seem to be Acknowledge and Not Acknowledge in network protocol They have 2 formats 1 Success case VAJA 1 will send 00 or 00 xxx Please note that they have space before 0
26. ve to realize which port the computer knows you device You have to right click at My Computers icon and choose Property 8 Click Hardware tab then click Device Manager System Properties System Restore Automatic Updates Hemote General Computer Name Hardware Advanced Device Manager D I The Device Manager lists all the hardware devices installed e on your computer Use the Device Manager ta change the properties of any device Device Manager Drivers Driver Signing lets you make sure that installed drivers are compatible with Windows Windows Update lets you set up how Windows connects to Windows Update for drivers Hardware Profiles E Hardware profiles provide a wap for you to set up and store different hardware configurations Hardware Profiles Enable Your Design 17 ThaiEasyElec com lll On Line Electronics Shop for Embedded System VAJ A Speech Recognition Module 9 You will see window as the following picture Search Ports COM amp LPT and click in front of them The port name USB Serial Port is ThaiEasyElec U2S_HOST BOARD and port number in braces are the port number that you have to use to communicate with your computer Device Manager File Action View Help e mg Batteries Bluetooth Devices Computer Zeg Disk drives E Display adapters 4 DVD CD ROM drives J a Human Interface Device
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