A query system of telephone voice performance by VB

First, the introduction

Telephone Voice inquiry system has been widely used in telephone banking, phone calls, securities Commission, Automatic payment (water, electricity, gas and other costs), voice mail, automatic voice service, civil aviation, public testing, railway and other departments of information inquiries and a variety of public places to automatically answer customer questions and other fields.

Telephone Voice Inquiry System workflow is the user Dial Telephone Voice inquiry system hotline, and according to the telephone voice prompts, by pressing the telephone key to query the computer stored a variety of information, the computer automatically answer the user's operation, and in the form of voice feedback to the user. The composition of the structure is shown in Figure 1.

Fig. 1 Automatic Voice query system

Second, the composition

Telephone Voice Inquiry system is a highly integrated product of modern telecommunication technology and computer technology, which is composed of two parts, hardware and software.

1. Hardware

The hardware part of the telephone voice inquiry system mainly includes: computer, telephone voice card, outside line (ordinary local telephone lines) or inside.

Voice card, specifically, "computer and telephone voice processing card" (hereinafter referred to as "voice card"), it is a computer and can achieve voice processing computer plug-ins. The main functions of the speech card are: connected with the telephone network through the computer, providing recording, playback, receiving code (DTMF code, PULSE code), automatic dialing, ringing detection and control of the hanging machine, signaling detection, transfer of the inside, monitor recording, fax, data transmission, the main station detection service functions.

The installation process for the hardware section is extremely simple. As long as the telephone voice card is plugged into the computer's expansion slot, and then the telephone line is connected to the telephone socket provided by the telephone voice card, the hardware part of the telephone voice inquiry system can be formed.

2. Software

The software is composed of three parts, such as operating system, telephone voice card bottom drive software and two development interface software, telephone voice inquiry system application software. Since the current international standard of telephone voice cards has not been developed, different manufacturers still need to provide the underlying driver software that supports various telephone voice functions (such as recording, playback, receiving and transmitting dual audio codes). However, many manufacturers also offer a variety of programming language interfaces that are user-friendly for two development (primarily. DLL file format provided).

Telephone Voice query system application software is generally composed of telephone voice processing and database processing two major program modules.

The main task of the Telephony Speech processor module is to complete (by invoking the underlying driver software) the pick-and-hold machine for each line, playback, recording, reception by the user button produced by the dual audio signal and the transmission of Dual audio signals and other functions, and can detect a variety of signal sounds, such as busy, busy tone and so on.

The database processing program module is one of the most important components of the voice query system, which is based on the module of the Voice processing module to query the corresponding score in the database.

Third, realize

1. First, the Voice card (we use Beijing Wuyue Xin Information Technology Co., Ltd. produced 8-tw_8vid voice card) into the computer motherboard, restart the computer and install the card bottom driver software and two development Interface software program (related library function dynamic connection port), so that telephone voice processing.

2. Through the voice card with the recording function of the welcome information, user action prompts information, error message, Guide information, especially the score and so on in Chinese speech, in order to play out in the proper process of voice query system, guide users to use the query system correctly and obtain the required information.