溫馨提示×
您好，登錄后才能下訂單哦！
點擊 登錄注冊 即表示同意《億速云用戶服務條款》
您好，登錄后才能下訂單哦！
例如從2channel，4.41k hz 重采樣到 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in和out都是單通道：
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:
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[0])
except Exception as e:
print(e)
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
方案二
y為下采樣的結果，類型np.ndarray
You can use Librosa's load() function,
import librosa
y, s = librosa.load('test.wav', sr=8000) # Downsample 44.1kHz to 8kHz
The extra effort to install Librosa is probably worth the peace of mind.
Pro-tip: when installing Librosa on Anaconda, you need to install ffmpeg as well, so
pip install librosa
conda install -c conda-forge ffmpeg
以上這篇Python對wav文件的重采樣實例就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持億速云。
免責聲明：本站發布的內容（圖片、視頻和文字）以原創、轉載和分享為主，文章觀點不代表本網站立場，如果涉及侵權請聯系站長郵箱：is@yisu.com進行舉報，并提供相關證據，一經查實，將立刻刪除涉嫌侵權內容。
