修改：
大家好，我需要检测一段时间内是否有数据发送到声卡。
感谢 Philip Regan 的帮助，我找到了一个关于音频录制的简单示例代码，如下链接所示：
http://developer.apple.com/library/mac/#samplecode/AudioQueueTools/Listings/aqrecord_cpp.html#//apple_ref /doc/uid/DTS10004380-aqrecord_cpp-DontLinkElementID_5
我成功地运行了它。
但它似乎记录了来自内部麦克风的声音，因为当将捕获的信号以十六进制格式转储到屏幕时，如果我将内部麦克风静音，捕获的数据将全部为零值，否则，输出数据将是随机的数字。
不幸的是，如果我将内部麦克风静音，则无法捕获任何内容，否则，由于麦克风的噪音，我无法测试另一台计算机的任何声音。
在这种情况下，捕获声卡的输出信号会有所帮助。但我不知道如何捕捉它。
有什么想法吗？
MODIFIED:
Hi all, I need to detect if any data sent to Audio Card during a period of time.
Thanks to Philip Regan's help, I found a simple sample code about audio recording as shown in following link:
http://developer.apple.com/library/mac/#samplecode/AudioQueueTools/Listings/aqrecord_cpp.html#//apple_ref/doc/uid/DTS10004380-aqrecord_cpp-DontLinkElementID_5
and I managed to run it successfully.
But it seems that it records sound from internal microphone, for, when dumping the captured signal to screen in format of Hex, if I mute the internal microphone, data captured turn out to be all zero values, otherwise, the output data will be random numbers.
Unfortunately, if I mute the internal microphone, nothing can be captured, else, I can't test is any voice from another computer because of the noice from microphone.
In this situation, capture the out-coming signal of Audio Card will help. But I don't know how to capture it.
Any ideas?
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不是默认的，不是。您需要访问较低级别的 API 才能获取此信息，如果没有扩展，Applescript 将无法运行到该级别。
Not by default, no. You'll need to access the lower-level APIs to get this information, and without an extension, Applescript doesn't work down to that level.