摘要
探讨了数字合成音频技术中三和弦电路的设计与实现问题,重点集中在硬件电路的设计及软件程序的编写上。设计的总体思路是:由单片机AT90S2313同时输出6路频率和脉宽不同的信号,他们经过后级的混音器处理后,合并为一路,形成三和弦波;再经过TDA2822构成的BTL功放放大后,推动扬声器发声。结果证明能够成功合成比较悦耳的三和弦音。
In this article,how to design and realize three chord circuit is discussed,which belongs to digital audio synthesis technology. It is focused on hardware designing and software coding. The main idea is： MCU AT90S2313 exports 6 signals with different frequencies and pulse width. Then they are mixed and become one signal which is called three - chord wave. At last, it is they are amplified by BTL which is composed of TDA2822 ,and the speaker sings. The result prove that pleasing music is successfully synthesized.
出处
《现代电子技术》
2007年第10期44-46,共3页
Modern Electronics Technique
