In the open source world, the best to hope for is your computer tooting different sound files based on the account or storage area where your E-mail landed.
在开放源码领域中，最好的期望就是您的计算机可以根据帐户或电子邮件存储的位置播放不同的声音文件。
However, the area contains significantly less energy when the source is far away rather than up close. This explains why the sound is not as loud.
然而，离声源远的地方比离声源近的地方所含的能量要少很多，因此声音就不那么响。
However, the area contains significantly less energy when the source is far away rather than up close. This explains why the sound is not as loud.
然而，离声源远的地方比离声源近的地方所含的能量要少很多，因此声音就不那么响。
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