Research And Application Of Speech Recognition Interaction In Smart Home

In the contemporary society,people attach great importance to the living environment,and smart homes have a great influence on people's lives,and they are basically civilianized.This design is based on the research and application of speech recognition interaction controlled by single chip computer in smart home.Compared with traditional smart home,speech recognition interaction is easy to operate and can freely choose,use flexibly,and voice can be adjusted.Syllables,sound changes and speed adjustments enable users to communicate with smart home,so that users can keep abreast of the work situation of home at any time.It is very convenient for daily use and has a wide range of applications.This design is divided into hardware design and software design.The hardware part will use STM32F407VET6 microprocessor module,LD3320 speech recognition module and SYN6288 voice output module.The LD3320 chip includes a speech recognition processor and external circuitry for voice recognition and voice control,and human-machine dialogue.It features small size,low power consumption and universal features.SYN6288 inherits the excellent features of 6188,the hardware interface is simple,its power consumption is relatively low,the sound color is not disk,its cost performance is very high,and the SYN6288 voice output module will be more intelligent,more accurate,and speech synthesis when recognizing text/number/string.Naturalness,clarity and intelligibility are higher.The software part introduces the speech recognition technology,adopts the MFCC to extract the feature value of the speech signal,and uses the improved DTW recognition algorithm to identify and train the speech signal.The design controls the SYN6288 module to perform the corresponding voice output through the judgment of the single-chip microcomputer,thereby achieving the purpose of voice interaction.In this design,the speech recognition accuracy of the system is improved by adjusting the recognition distance and adding garbage keywords.By presupposing voice information,the function of simple interactive communication with MCU is realized.Calls can be answered.In speech recognition,the branch structure of follow-up questions or answers can be judged according to the answers to questions,and the corresponding expressions of joy,anger and sadness can be displayed on dot-matrix screen driven by latches.The hardware circuit is composed of a speech recognition module,a relay drive module and the like.The purpose of these modules is to enable the microcontroller to start running when the person is commanding,to turn the smart home mode on,to automatically turn off when the shutdown command is heard,to turn it on or off,and to voice the user.Finally,through the overall joint adjustment of hardware and software,the basic functions such as voice recognition interaction are realized,which makes the smart home more humanized and has a better application prospect in the market.