MIDI为什么提供127音符 [英] Why Does MIDI Offer 127 Notes

问题描述

MIDI中的127个音符值是否具有音乐意义(一定数量的八度或其他八度)?还是由于二进制文件格式IE出于计算目的将其设置为127?

Is the 127 note values in MIDI musically significant (certain number of octaves or something)? or was it set at 127 due to the binary file format, IE for the purposes of computing?

推荐答案

127 = 2 ⁷ -1

这是8位有符号整数的最大正值，因此在文件格式中也是有意义的限制-这是您可以将一个字节(在大多数系统上)存储的最大值使其未签名.

It's the maximum positive value of an 8-bit signed integer, and so is a meaningful limit in file formats--it's the highest value you can store in a byte (on most systems) without making it unsigned.

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