I'm playing with AIFF files, which include an 80-bit "extended" format value which defines the sample rate. Since neither my language of choice, R, nor my desktop Mac, natively supports this size, I need to write conversion code. Given the data structure of the bits, as shown here, and in this image from that page
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假设我永远不会看到那么高精度的采样率，我可以简单地截断"分数"部分吗？ 也就是说，我可以抓取从左侧开始的64位并将它们视为双浮点吗？ 请注意，指数中的有效位数也必须被截断，根据图表为this question
一个最小的例子:我验证了测试文件中的采样率为44100.
从AIFF标头读取的10个字节是:
40 0e ac 44 00 00 00 00 00 00
edit
ac 44，因为4个原始字节转换为小数变成44100，这是我期望的采样率.