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Music
- 主要技术：液晶显示，I2C总线技术，利用ZLG7290扫描矩阵键盘 功能：能存储1KB的信息容量，并通过8254产生声音信号 -Main Technical: LCD(12864) display, I2C bus technology, the use of ZLG7290 scan matrix keyboard Features: Information capacity of 1KB, and the acoustic signals generated by 8254
signal-generation
- 多功能函数信号发生器（声音输出，信号保存）-Multi-function signal generator (sound output signal preservation)
spi3
- 语言回放系统，用avr采样声音信号，存储到sd卡里，有放音功能，通过da0832转成模拟信号，再经过功率放大驱动喇叭。-Language playback system, avr sampled sound signal storage to sd card playback function, converted to analog signals by da0832, and then after the power amplifier drives the speaker.
voicetracer
- 声音定位系统源码，51单片机用外部中断读取三个声音接收器接收到声音信号的时间差并以微秒为单位将数据从串口发出-Sound positioning system source code, with 51 MCU external interrupt read three sound receiver receives the sound signal and the time difference in microseconds for the data sent from the serial
hehe
- 四个ADC声音信号输入到CPLD中然后进行处理，最终一路输出-Four ADC voice signal is input to the CPLD then processed and eventually all the way out