從python3中的.wav文件中刪除文件頭

Question

我一直在做一個使用RSA算法加密.wav文件的項目，為此，我需要刪除文件頭才能正確讀取文件。 我需要聲音數據作為一個numpy數組。 現在，我已經在網上搜索了此信息，但不了解文件頭是什么以及如何在python3中刪除它。 期待提出建議。 謝謝。

Answer 1

binarySound = bytearray()
binaryHeader = bytearray()

with open("a2002011001-e02.wav",'rb') as f:
        binaryHeader = f.read(44)
        binarySound = f.read()

這應該是您要尋找的。 這會將前44個字節（應該是標頭）讀入binaryHeader變量，其余聲音數據讀入binarySound變量。

要恢復您的音樂文件，您只需將這兩個文件重新添加在一起

song = bytearray()

with open("header.bin","rb") as h:
        song = h.read()
        with open("data.bin","rb") as d:
                song += d.read()

with open("new.wav","wb") as f:
        f.write(song)

編輯：要在OP中包含對numpy數組的需要的編輯：

import numpy

binarySound = {}
binaryHeader = {}

song = {}

with open("a2002011001-e02.wav",'rb') as f:
        buffer = f.read(44)
        binaryHeader = numpy.frombuffer(buffer,dtype=numpy.uint8)
        buffer = f.read()
        binarySound = numpy.frombuffer(buffer,dtype=numpy.uint8)

with open("header.bin","wb") as f:
        f.write(binaryHeader)

with open("data.bin","wb") as f:
        f.write(binarySound)

with open("header.bin","rb") as h:
        song = h.read()
        with open("data.bin","rb") as d:
                song += d.read()

with open("new.wav","wb") as f:
        song = numpy.array(song)
        f.write(song.tobytes())