LD3320 speech recognition chip code, the routine has voice switching gate.

SpeechRecognitionSource
.......................\CORE
.......................\....\core_cm3.c
.......................\....\core_cm3.h
.......................\....\startup_stm32f10x_hd.s
.......................\HARDWARE
.......................\........\EXIT
.......................\........\....\exit.c
.......................\........\....\exit.h
.......................\........\LCD5110
.......................\........\.......\ascii0608.h
.......................\........\.......\bmp.h
.......................\........\.......\lcd5110.c
.......................\........\.......\lcd5110.h
.......................\........\.......\stringCH.h
.......................\........\LD3320
.......................\........\......\KeyWorld.c
.......................\........\......\KeyWorld.h
.......................\........\......\LD3320_main.c
.......................\........\......\LD3320_main.h
.......................\........\......\LDChip.c
.......................\........\......\LDChip.h
.......................\........\......\Reg_RW.c
.......................\........\......\Reg_RW.h
.......................\........\......\song.h
.......................\........\LD3320移植前
.......................\........\............\KeyworldConf.h
.......................\........\............\LD3320.c
.......................\........\............\LD3320.h
.......................\........\............\song.h
.......................\........\LED
.......................\........\...\led.c
.......................\........\...\led.h
.......................\........\PWMOUT
.......................\........\......\PWM.c
.......................\........\......\pwm.h
.......................\........\SI4463
.......................\........\......\radio_config_si446i.h
.......................\........\......\si4463.c
.......................\........\......\si4463.h
.......................\........\......\si446x_defs.h
.......................\........\SPI
.......................\........\...\spi.c
.......................\........\...\spi.h
.......................\........\STMFLASH
.......................\........\........\stmflash.c
.......................\........\........\stmflash.h
.......................\........\TFT1.44
.......................\........\.......\Font.h
.......................\........\.......\GUI.c
.......................\........\.......\GUI.h
.......................\........\.......\LCD_Config.h
.......................\........\.......\Lcd_Driver.c
.......................\........\.......\Lcd_Driver.h
.......................\........\.......\Picture.h
.......................\........\.......\QDTFT_demo.c
.......................\........\.......\QDTFT_demo.h
.......................\........\TimeIRQ
.......................\........\.......\time.c
.......................\........\.......\time.h
.......................\OBJ
.......................\...\SpeechRecognitionSource.hex
.......................\Readme.txt
.......................\STM32F10x_FWLib
.......................\...............\inc
.......................\...............\...\misc.h
.......................\...............\...\stm32f10x_adc.h
.......................\...............\...\stm32f10x_bkp.h
.......................\...............\...\stm32f10x_can.h
.......................\...............\...\stm32f10x_cec.h
.......................\...............\...\stm32f10x_crc.h
.......................\...............\...\stm32f10x_dac.h
.......................\...............\...\stm32f10x_dbgmcu.h
.......................\...............\...\stm32f10x_dma.h
.......................\...............\...\stm32f10x_exti.h
.......................\...............\...\stm32f10x_flash.h
.......................\...............\...\stm32f10x_fsmc.h
.......................\...............\...\stm32f10x_gpio.h
.......................\...............\...\stm32f10x_i2c.h
.......................\...............\...\stm32f10x_iwdg.h
.......................\...............\...\stm32f10x_pwr.h
.......................\...............\...\stm32f10x_rcc.h
.......................\...............\...\

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