我正在使用Python编写脚本来解析MIDI文件（是的，我知道Python有现成的MIDI解析库，但对于我的用例来说，自己从头开始编写最容易）。
我遇到的一个问题是时间分割。标题的最后两个字节指定了时间分割，但我很难确定文件的时间分割是以每拍的滴答声为单位还是以每秒钟的帧数为单位。经过一些阅读，似乎最高位指示时间分割的两个中的哪一个被注意到。 我感到困惑的是字节的最高位是字节的第一位还是字节的最后一位，以及如何完全读取MIDI时间分割。
编辑：例如，我有一个MIDI文件的头如下：
4d54 6864 0000 0006 0000 0001 0078
0078 are the two bytes that denote the time sig, but I am confused as how to interpret it.
编辑2：
def openmidi(file):
tmbr = []
f = open(file, "rb")#opening the midi in binary mode
loopfile = True
while loopfile == True:
cb = f.read(1)
if cb != b'':#checking if there are still bytes left to read
tmbr.append(cb)
else:
loopfile = False
return tmbr
def byteread(num):#will read and return the specified number of bytes
global bytecounter
bytehold = b''
for i in range(0, num):#reads specified number of bytes
bytehold+=midibytearray[i+bytecounter]#number of increment plus the read position
bytecounter+=num#after reading is done read position is incremented by the number of bytes read.
return bytehold#after looping is done the specified bytes are returned.
def timetype(deltatimebytes):#used to determine if the time division is in ticks per beat or frames per second.
if str(deltatimebytes).replace("b'","").replace("'","")[0:2] == "00":
return True#if true the time division is in ticks per beat.
else:
return False#the time division is in frames per second.
global bytecounter
bytecounter = 0 #keeps track of what position in the file is being read.
midibytearray = openmidi("C:\\Users\\gabep\\Desktop\\Electrorchestrion\\Midis\\BONEY M.Rasputin K.mid") #array that the bytes will be stored in.
header = byteread(4)
chunklength = byteread(4)
formattype = byteread(2)
numofmtrkchunks = byteread(2)
deltatime = byteread(2)#if no tempo is assigned, 120bpm is assumed.
print(deltatime)
print("Header: "+str(header.decode("utf-8")))
print("MThd chunk length: "+str(int(chunklength.hex(), 16)))
print("Midi Format Type: "+str(int(formattype.hex(), 16)))
print("Number of MTrk chunks (number of tracks): "+str(int(numofmtrkchunks.hex(), 16)))
print("Delta time: "+str(int(deltatime.hex(), 16)))
if timetype(deltatime.hex()) == True:
print("Time signature is in ticks per beat")
else:
print("Time signature is in frames per second")