您可以使用一个简单的AutoIt脚本来读取MIDI事件，请参阅MIDI输入。

您还需要MIDI UDF和模拟按键。

读取MIDI事件应该很容易，但不同的MIDI控制器(仪器)具有不同的功能。首先试着找出你的MIDI钢琴能做什么，然后看看你如何能最好地将这些功能映射到模拟qwerty键盘上。

如果你愿意，你可以在屏幕上或托盘上有一些东西来帮助你看到你正在做什么(也就是说，对于Shift, Ctrl和Alt模拟)。

你可以用一个Teenys微控制器快速破解自己的USB键盘。

事实上，他们有如何制作USB键盘的示例代码。

你可以用两种方法来解决这个问题:

找一架旧钢琴，把开关直接连接到小钢琴上 添加额外的逻辑以连接到MIDI端口和必要的解码。

以MAME街机游戏为例。他们已经建立了硬件设备，允许输入任意数量的不同项目。例如，iPac将输入设备的信号转换为USB，然后计算机可以使用USB来模拟按键。您可以使用任意组合的输入设备，只要不需要疯狂的编程逻辑就可以，因为解释输入的软件已经完成并经过了良好的测试。

我见过飞行模拟器座舱输入，自定义亭，和投票系统建立在这种方法.....而且价格也很合理!

我同意Brian O'Dell的回答——如果这是我的项目，我会用硬件来做。它的优点是与平台和硬件无关——你的盒子取代了对MIDI-USB接口和PC API的需求。

mbed是一个非常容易学习的快速原型平台，与Arduino IMHO相比具有多种优势(在线编译器，512 KB闪存，96 MHz, c++语言)。它有一个USB键盘接口和一个预先为您编写的USB Midi接口。

社区是非常友好和愿意帮助的，有很多现有的项目同时使用MIDI和USB隐藏仿真-搜索Youtube“mbed MIDI”或类似的。

要解决这个问题，你需要做一些事情:

A way to capture MIDI data from your keyboard. Depending upon the interface: MIDI interface (classic) or USB MIDI interface (modern) the most likely interface is to a computer as it provides the most options. USB host microcontrollers are not as simple as just using a computer. A scheme to convert MIDI data into keystrokes. Like one user pointed out, chords are the way to go as the number of keys will not be dependent upon the number of piano keys. A way to inject a key into the operating system. This will require a low-level driver to be accurate. I have played around with applications that inject keyboard and mouse data into applications in Windows 7, and it can be flaky and depend upon whether an application is currently in focus. This is hardest part of the interface. What may work is to create a HID USB keyboard microcontroller that also has a serial interface.

串行接口将创建一个虚拟串行端口。读取MIDI数据并产生击键的软件可以向虚拟串行端口发送一个串行消息。微控制器将发送一个击键，使它看起来像一个标准的键盘输入。这将允许同时连接MIDI端口和USB MIDI键盘。

Hmmm, with this type of interface you could also simulate a mouse and use some piano keys setup for the mouse axis and buttons. The pressure could be used to determine mouse pointer velocity. So you could eliminate the mouse as well. Another benefit of this approach is any type of input device you connect could talk to the virtual serial port to produce keyboard and mouse events. So if you wanted to add other hardware such as drum pedals or a joystick it would be a matter of adjusting the program that talks to the serial interface.

Another take on the above is like some posted above to use an Arduino, but also include USB Host Shield from Sparkfun to handle USB based music keyboards. This allows the Arduino to be programmed as a keyboard or keyboard mouse combo in the boot loader chip and allows the device to act a USB host for the USB based music keyboard. Then you are covered for both types. Although, I still think the virtual serial port method is more flexible and would be easier to program in the long run. The Arduino device will be harder to change than a desktop program or service.

还有另一种可能: 单手和弦键盘已经存在。我看过关于它们的视频，但你必须确定它们是否会伤害你的手。

许多键盘都有一个串行端口(RS-232)连接器，向计算机发送MIDI信号。我使用一个名为“梁”的程序将串口通信转换为键盘敲击。

“梁”有一个“映射”功能，允许您将每个键一个接一个地映射到相应的击键。

这可能是你正在寻找的简单解决方案!