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本文介绍了可编程智能硬件在拉弦乐器助奏功能上的典型应用。通过贴近琴弦(距离0.5cm)的16-20个发光二极管(间隔0.5-1cm)跟随音乐的节奏、音高、音符的闪烁来助奏,学习者将手指按在闪烁的二极管旁的琴弦上就可按准音位。考虑音长拍子节奏,音有多长发光二极管就亮多久,演奏者也就按在这个弦位上多久。这种方法既适用于二胡,也适用于其它拉弦类乐器爱好者助奏。在解决了电脑模拟键盘奏乐,再通过数据采集、数据解析、收发调试的技术后,将虚拟键盘的音智能化传递给嵌入式开发板上的I/O寄存器,然后通过软件编程将寄存器里按下的音长与音频信息输出到智能端,规定I/O的模式与配置,使LED灯选择性点亮。
This article describes the typical application of programmable intelligent hardware on a string playing instrument. With 16-20 light-emitting diodes (0.5-1 cm apart) close to the strings (0.5 cm away from the strings) following the rhythms, pitches, and notes of the music, the learner presses his finger against the string beside the flashing diode On the quasi-pitch can be press. Consider the tempo of the tone pitch, how long the light is on and how long the player presses on the string. This method is suitable for both erhu, but also for other pull-string instrument hobbyist. After solving the computer simulated keyboard music, and then through the data acquisition, data analysis, send and receive debugging technology, the virtual keyboard audio intelligence transferred to the embedded development board I / O registers, and then through software programming registers Under the sound length and audio information output to the smart side, providing I / O mode and configuration, the LED lights selectively lit.