文件名称:keyboard
- 所属分类:
- 单片机(51,AVR,MSP430等)
- 资源属性:
- [WORD]
- 上传时间:
- 2012-11-26
- 文件大小:
- 4kb
- 下载次数:
- 0次
- 提 供 者:
- 水**
- 相关连接:
- 无
- 下载说明:
- 别用迅雷下载,失败请重下,重下不扣分!
介绍说明--下载内容均来自于网络,请自行研究使用
设计一个简易电子琴,使得相应键按下时,能发出1、2、3、4、5、6、7音阶声,且发音时间的长短可调。
提示:(1)每个音阶对应的频率如下:
音阶 1 2 3 4 5 6 7
频率(HZ) 261.1 293.7 329.6 349.2 392.0 440.0 493.9
(2)不同频率的区别,可通过调节向D/A转换器输出数据的时间间隔来得到。
-Design a simple flower, making the corresponding key is pressed, the sound can be issued 1,2,3,4,5,6,7 scale, and the pronunciation of adjustable length of time. Note: (1) corresponds to the frequency of each scale is as follows: scale 1234567 frequency (HZ) 261.1 293.7 329.6 349.2 392.0 440.0 493.9 (2) the difference between different frequencies, by adjusting the D/A converter output time interval to get the data.
提示:(1)每个音阶对应的频率如下:
音阶 1 2 3 4 5 6 7
频率(HZ) 261.1 293.7 329.6 349.2 392.0 440.0 493.9
(2)不同频率的区别,可通过调节向D/A转换器输出数据的时间间隔来得到。
-Design a simple flower, making the corresponding key is pressed, the sound can be issued 1,2,3,4,5,6,7 scale, and the pronunciation of adjustable length of time. Note: (1) corresponds to the frequency of each scale is as follows: scale 1234567 frequency (HZ) 261.1 293.7 329.6 349.2 392.0 440.0 493.9 (2) the difference between different frequencies, by adjusting the D/A converter output time interval to get the data.
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下载文件列表
电子琴程序.doc