# 播放 MIDI 文件

SongBook+ 可以播放普通的 MIDI 文件，但其本身没有内建的合成器来产生声音。

要从 MIDI 数据中生成声音，还需要额外的设备，比如通过 MIDI 连接的外部硬件（如键盘或音源模块），或者是在后台运行的其他厂商的合成器应用程序，通过“Virtual MIDI”接收来自 SongBook 的信号。

一个可以直接在 iPad 上用于生成声音的应用程序是“bismark bs-16i”。如果此应用在后台运行并且启用了“Virtual MIDI”，您可以直接在 iPad 上听到音乐，而无需外部硬件。

![App bs-16i als Klangerzeuger für MIDI-Dateien](/files/YCLCUFBY5vPScv8forH8)


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