Wave Audio transcoding Test Python script

#encoding: Utf-8
Import CSV
Import OS
Import Binascii
Import struct

Indir = ' d:/in/'
OutDir = ' d:/out/'
#测试录音
Sourcevoicepath = indir + ' 12560469.vox '
def outvoicehead (size , format,channel,samplerate,bytepersec,blockalign,bitpersample):
head = ByteArray (b ' \x52\x49\x46\x46 ')
Head = head + struct.pack (' <l ', size)
Head = head + ByteArray (b ' \x57\x41\x56\x45\x66\x6d\x74\x20 ')
Head = head + Bytea Rray (b ' \x12\x00\x00\x00 ')
Head = head + struct.pack ('

Head = head + struct.pack ('

Head = head + struct.pack (' <l ', bytepersec)
Head = head + Struc T.pack ('

Head = head + struct.pack (' <l ', bitpersample)
Head = head + ByteArray (b ' \x64\x61\ X74\x61 ')
Head = head + struct.pack (' <l ', size-38)
return head;

Def Testmono ():
Count =1
sourcefile = open (Sourcevoicepath, ' RB ')
Size = Os.path.getsize (Sourcevoicepath)
#vox源录音头部信息大小
Sourceheadsize = 178
DataSize = Size-sourceheadsize
While count<132:
Changeheadvoicepath = Indir + str (count) + '. wav '
Resultvoicepath = OutDir + str (count) + '. wav '
Changeheadvoicefile = open (Changeheadvoicepath, ' WB ')
Changeheadvoicefile.write (Outvoicehead (datasize + 46-8,count,1,8000,8000,4,8))
Sourcefile.seek (Sourceheadsize)
Changeheadvoicefile.write (Sourcefile.read ())
Ffmstr = ' ffmpeg-y-i ' + Changeheadvoicepath + '-ar 8000 ' + Resultvoicepath
Os.system (FFMSTR)
Count = Count + 1
Changeheadvoicefile.close ()
If Os.path.exists (Changeheadvoicepath):
Os.remove (Changeheadvoicepath)

    if os.path.getsize(resultVoicePath)<10240:        os.remove(resultVoicePath)sourceFile.close()

Def Teststereo ():
Count =1
sourcefile = open (Sourcevoicepath, ' RB ')
Size = Os.path.getsize (Sourcevoicepath)
#vox源录音头部信息大小
Sourceheadsize = 32
DataSize = Size-sourceheadsize
While count<132:
Leftpath = Indir + str (count) + ' left.wav '
Rightpath = Indir + str (count) + ' right.wav '
Resultvoicepath = OutDir + str (count) + '. wav '
Leftpathvoicefile = open (Leftpath, ' WB ')
Rightpathvoicefile = open (Rightpath, ' WB ')
Leftpathvoicefile.write (Outvoicehead (DATASIZE//2 + 46-8,count,1,8000,8000,2,8))
Rightpathvoicefile.write (Outvoicehead (DATASIZE//2 + 46-8,count,1,8000,8000,2,8))
Sourcefile.seek (Sourceheadsize)
Leftpathvoicefile.write (Sourcefile.read (DATASIZE//2))
Sourcefile.seek (SOURCEHEADSIZE+DATASIZE//2)
Rightpathvoicefile.write (Sourcefile.read (DATASIZE//2))
#ffmpeg-V error-y-I D:\in\suiyi\1600003432800055-n0-alaw.wav-i D:\in\suiyi\1600003432800055-n1-alaw.wav-filter_ Complex AMIX=INPUTS=2:DURATION=LONGEST:DROPOUT_TRANSITION=2-AC 1-ar 8000 D:\in\suiyi\dc.wav
Ffmstr = ' ffmpeg-v error-y-i ' + Leftpath + '-i ' + Rightpath + '-filter_complex amix=inputs=2:duration=longest:dropo Ut_transition=2-ac 1-ar 8000 ' + Resultvoicepath
Os.system (FFMSTR)
Count = Count + 1
Leftpathvoicefile.close ()
Rightpathvoicefile.close ()
If Os.path.exists (Leftpath):
Os.remove (Leftpath)

    if os.path.exists(rightPath):        os.remove(rightPath)    if os.path.getsize(resultVoicePath)<10240:        os.remove(resultVoicePath)sourceFile.close()

#选择测试函数
Testmono ()

Wave Audio transcoding Test Python script