abstract
At present, speech synthesis, speech recognition, speech storage and playback technology are more and more widely used. Although the digital processing of speech signals can be completed by hardware circuits (such as A/D, D/A, memory, etc.). ) In the general single-chip microcomputer measurement and control system, the function is relatively simple and the effect is not very good. In this paper, a voice storage system composed of single chip AT89C52 and voice chip ISD2560 is used to realize segmented recording and combined playback of voice. Combined with liquid crystal display module OCMJ2X8, it can realize simple station reporting function. The hardware circuit of the system is simple, easy to debug, cost-effective and practical.
Keywords: voice recording and playback system; Single chip microcomputer AT89C52ISD2560
abstract
At present, speech synthesis, speech recognition, speech storage and playback technology are more and more widely used, although the general monitoring system using single chip microcomputer has hardware circuits (such as A/D, D/A, memory, etc. ) can complete the digital signal processing of speech, but the function is relatively simple and the effect is not very good. In this paper, the storage system composed of AT89C52 voice microcontroller and ISD2560 voice chip is adopted, and the voice is divided into different periods and combined intervals. With the LCD module OCMJ2X8, the simple bus stop reporting function can be realized. The hardware circuit of the system is simple, easy to adjust, cost-effective and practical.
Keywords: AT89C52 ISD2560, a single chip computer of voice recording system
catalogue
Abstract 1
Abstract 2
Chapter 1 Introduction 1
1. 1 Introduction 1
Development of 1.2 digital voice recording and playback system
Chapter II Single Chip Microcomputer Control System 2
2. 1 Introduction to Single Chip Microcomputer 2
3. 1 Overall Scheme Demonstration 3
3.2 Equipment Selection 3
3.2. 1 single chip microcomputer AT89C52 3
ISD2560 voice chip 5
3.2.3 OCMJ2×8 LCD module 7
Chapter IV System Software and Hardware Design 1 1
4. 1 system hardware circuit design 1 1
4.2 System Software Design 12
4.2. 1 ISD2560 internal address unit address 12
4.2.2 General flow chart of system software 12
4. 2. 3 at89c 52 Single Chip Microcomputer Control of ISD2560 Recording and Playback
4.3 Display section 17
The fifth chapter system simulation 23
Summary number 25
Thanks 26
Reference 27
Appendix I 28
Appendix II 35