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Posted 4 Aug 2002

Float and datetime to Vietnamese textual

, 4 Aug 2002
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A DLL to convert Float and datetime to Vietnamese textual string
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There is a high demand for converting float data and datetime to textual presentation. You can find its application in many different actual situations such as declaring bank amount, tax amount, money invoice amount etc, especially in IVR (Interactive Voice Response)applications.

I was involved in a IVR application, specifically a Telephone Banking center in which we produced voice stream to state customers' balance. If you have a TTS (Text to speech) engine, everything would be simple: you select balance amount from the database as a float number and the engine will speak it out. The fact is not so wonderful, when we developed this program, there was no such Vietnamese TTS engine. Hence we have to do everything by hand, i.e. convert customer's balance to a texttual representation, then produce voice stream from a series of pre-recorded voice files.

From that time, my application runs fine. If you want, you can dial 84-4-8313895 and ask for Telephone Banking ext. The pseudo TTS engine I created is wrapped in a DLL because the script we used in our IVR system can only call a DLL with a predetermine function type, i.e. :

char* extern C yourfunction(char* inputstring)


Hence my DLL has the following functions:

extern "C" NUMANALYSE_API char *VS_MainNum(char *numstr)
//Example VS_MainNum("-12345.89")

extern "C" NUMANALYSE_API char *VS_NonCount(char *numstr)
//Example VS_NonCount("12A76B009CD87")

extern "C" NUMANALYSE_API char *VS_DateTimeV(
  char *numstr="0000 00 00 00:00:00")
//Example VS_DateTimeV("2002 12 20 16:30:20")

extern "C" NUMANALYSE_API char *VS_DateTimeE(
  char *numstr="0000 00 00 00:00:00")
//Example VS_DateTimeE("2002 12 20 16:30:20")

extern "C" NUMANALYSE_API char *VS_CardinalE(char *numstr)
//Example VS_CardinalE("-12345.67")

extern "C" NUMANALYSE_API char *VS_OrdinalE(char *numstr)
//Example VS_OrdinalE("12345")

And in the core are the classes:

class CSonNumV 
    static char * NoncountV(char * numstr, char * g_num); 
    static char * CardinalV(char *numstr, char *g_num); 
    virtual ~CSonNumV(); 
    static CString FirstTwo(int tw); 
    static CString FirstThree(int th); 
    static CString Fractal(CString cstw); 
    static CString NumComb(double x, char *s); 

class CSonTime : public CTime 
    CString FormatE(LPCTSTR fmtString); 
    CSonTime(LPCTSTR mstr); 
    typedef char * (*funcptr)(char *); 
    void put_pfnV(funcptr x); 
    CString FormatV(LPCTSTR fmtString); 
    CSonTime(int nYear, int nMonth, int nDay, int nHour, int nMin, 
        int nSec, int nDST = -1 ); 
    CSonTime(const CSonTime& timeSrc); 
    CSonTime& CSonTime::operator =(const CSonTime &timeSrc); 
    CSonTime& CSonTime::operator =(LPCTSTR mstr); 
    virtual ~CSonTime(); 
    CString get_partE(char b); 
    CString get_partV(char a); 
    funcptr m_pfnV; 

class CSonJFancolNumE 
    static char * OrdinalE(char * numstr, char * g_num); 
    static char * CardinalE(char *numstr, char *g_num); 
    CSonJFancolNumE(); virtual ~CSonJFancolNumE(); 


I also want to give credit to Eduardo Velasquez for his Tokenizer class and Jeremy Lee Falcon for his NumWord English textual representation as I use his work to produce English representation in my DLL. Thank you and have fun


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Comments and Discussions

Questionivr help Pin
samifiaz2k17-Jul-07 2:44
membersamifiaz2k17-Jul-07 2:44 
QuestionIVR help Pin
samifiaz2k17-Jul-07 2:38
membersamifiaz2k17-Jul-07 2:38 
AnswerRe: IVR help Pin
Nguyen Luong Son9-Sep-07 23:45
memberNguyen Luong Son9-Sep-07 23:45 
GeneralThanks Pin
Vikas Kumar Singh20-Jul-06 1:24
memberVikas Kumar Singh20-Jul-06 1:24 
GeneralYour comments [modified] Pin
Nguyen Luong Son12-Nov-05 16:44
memberNguyen Luong Son12-Nov-05 16:44 
GeneralRe: Your comments [modified] Pin
Nguyen Luong Son3-Dec-05 17:49
memberNguyen Luong Son3-Dec-05 17:49 
Hi friends,

This not only for Vikas Singh but I hope it could be helpful for others.
For you Vikas Singh, you wrote:


We are using dlink modem DFM-562E++ for development of Inteactive Voice Response System.
For development of IVR program we came to know that unimodem 5 has to be configured.

What is unimodem 5? how to configure unimodem 5 in windows 2000? Is unimodem 5 exe is default in windows 2000?

We are using windows 2000 as opearting system.We tried to install unimodem V.Windows OS correpted.
Then we come to know about Unimodem 5 is different than Unimodem V. Still confused...!

We are using MS Visual Studio 2003, Windows 2000 Pro Ed with Microsoft Speech Application SDK (SASDK) 5.1. I know C#, VB.Net, VB6 as languages.

Please Give information about unimodem 5 how to configure it with IIS & Windows.

IVR Application details:

We want to develop a Telephonic Interaction Application (IVR System), in which a client will call on a Telephone which is attached with our computer, and then, an application running on my PC will give response to that particular client by saying like Press "0" for know your balance, "1" for changing languages, etc. and process his/her pressing buttons on his/her Telephone/Mobile.

We have a good configured PC with D-Link Modem DFM-562E (V.92 56000bps Fax/Data/Voice), we are not using Dialogic Card. Is it ok to get DTMF inputs by our modem for the an IVR application, and how can we get DTMF inputs? We are unable to get DTMF tones setting from our modem by performing AT Test as given in modem's manual.

We have used TAPIEx C# sample, When application runs user get connected to our sample program when user press a button, we are getting

If we use Windows 2000 as Operating System when user press a button the system is restarting.We came to know about the concept our modem drivers has to be interfaced with Unimodem
Now When the telephone caller is pressing any key from his/her telephone/mobile, the PC is either rebooted or just halted with the give error in blue screen.

Thanks & Regards

Vikas S.
Nerve Centrex


OK, if you plan for a further development for your IVR, you should establish tight connections with local proprietary board vendors. Such a new developments I have used in the project was F..'s VR ( Voice Recognition ) innovations, not to mention BioAuthentication idea we came up at that time which is now a registed trademark suite of F...

Frown | :( Unfortunately, I couldn't give you a contact at F.. right now as I resigned from it without any compensation. My boss even did not paid my pension plan this made me I was so depressed.


Nguyen Luong Son

Where should I go tomorow?

-- modified at 8:08 Tuesday 10th April, 2007
GeneralQuestion pls! Pin
manasrahfantom3-Nov-04 8:04
membermanasrahfantom3-Nov-04 8:04 
GeneralGood idea Pin
haicnt637915-Oct-04 17:32
memberhaicnt637915-Oct-04 17:32 

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