基于DSP的音乐编辑系统

The Music Compilation System Based on DSP

针对现有音乐编辑装置多为大型、复杂的系统,其价格昂贵、不宜推广的特点,本文选用 TMS320VC5416 DSP 芯片与 CPLD 芯片95144XL、LCD 显示器件 RT12864J-1、键盘及少量外围元器件组成硬件,采用状态设计方法编制软件,制作基于 DSP 最小化音乐编辑系统。实验表明:该系统可以对七声音阶的三个八度进行编辑、修改、播放,并可在 LCD 上实时显示当前工作状态,输出音频误差小于0.76%。

For the system of music compilation is often large, complex and expensive for its price, it is difficult to be used widely, a minimum system of music compilation based on DSP is introduced. Its hardware is made of DSP TMS320VC5416, CPLD 95144XL, LCD RT12864J-1, keyboard and a few parts, the software is compiled by the method of the stating design. The results of experiment show that the ternary octachord of the heptachord is can compiled, modified and played, the real-time state is displayed in LCD, the error of audio frequency is under 0. 76 percent.