Python对对wav文件的重采样实例文件的重采样实例
今天小编就为大家分享一篇Python对wav文件的重采样实例,具有很好的参考价值,希望对大家有所帮助。一起
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例如从例如从2channel,,4.41k hz 重采样到重采样到 1 channel,,16k hz
def downsampleWav(src, dst, inrate=44100, outrate=16000, inchannels=2, outchannels=1):
import os,wave,audioop
if not os.path.exists(src):
print ('Source not found!')
return False
if not os.path.exists(os.path.dirname(dst)):
os.makedirs(os.path.dirname(dst))
try:
s_read = wave.open(src, 'r')
s_write = wave.open(dst, 'w')
except:
print ('Failed to open files!')
return False
n_frames = s_read.getnframes()
data = s_read.readframes(n_frames)
try:
converted = audioop.ratecv(data, 2, inchannels, inrate, outrate, None)
if outchannels == 1:
converted = audioop.tomono(converted[0], 2, 1, 0)
except:
print ('Failed to downsample wav')
return False
try:
s_write.setparams((outchannels, 2, outrate, 0, 'NONE', 'Uncompressed'))
s_write.writeframes(converted)
except:
print ('Failed to write wav')
return False
try:
s_read.close()
s_write.close()
except:
print ('Failed to close wav files')
return False
return True
若若in和和out都是单通道:都是单通道:
def downsampleWav(src, dst, inrate=48000, outrate=16000, inchannels=1, outchannels=1):
import os,wave,audioop
if not os.path.exists(src):
print ('Source not found!')
return False
if not os.path.exists(os.path.dirname(dst)):
os.makedirs(os.path.dirname(dst))
try:
s_read = wave.open(src, 'rb')
params = s_read.getparams()
nchannels, sampwidth, framerate, nframes = params[:4]
print(nchannels,sampwidth, framerate,nframes)
s_write = wave.open(dst, 'wb')
except:
print ('Failed to open files!')
return False
n_frames = s_read.getnframes()
data = s_read.readframes(n_frames)
try:
converted = audioop.ratecv(data, 2, inchannels, inrate, outrate, None)
if outchannels == 1 and inchannels != 1:
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