在python3中使用sounddevice和numpy编写wav文件
问题描述:
我想用创建numpy的sounddevice录制音调并将其写入wav文件。这里是代码:在python3中使用sounddevice和numpy编写wav文件
import numpy
import sounddevice as sd
import soundfile as sf
import sys
duration = 3
amplitude = 0.3
sampling_frequency = 44100
time = numpy.arange(int(numpy.ceil(duration * sampling_frequency)))/ sampling_frequency
frequency1 = 500
tone1 = amplitude * numpy.sin(2* numpy.pi * frequency1 * time)
frequency2 = 700
tone2 = amplitude * numpy.sin(2* numpy.pi * frequency1 * time)
frequency3 = 1500
tone3 = amplitude * numpy.sin(3* numpy.pi * frequency1 * time)
frequency4 = 400
tone4 = amplitude * numpy.sin(4* numpy.pi * frequency1 * time)
result = tone1
result2 = tone2
result3 = tone3
result4 = tone4
sd.play(result + result2 + result3 + result4, sampling_frequency)
filename = 'output.wav'
mydata = sd.rec(int(result + result2 + result3 + result4),sampling_frequency,channels=2, blocking=True)
sf.write(filename, mydata, sampling_frequency)
我得到这个错误:只有长度为1的阵列可以转换到Python标量 有什么不好的代码?我与蟒蛇一个新手
答
你的第二个到最后一行是
mydata = sd.rec(int(result + result2 + result3 + result4),sampling_frequency,channels=2, blocking=True)
如果您尝试result1
等变量的总和强制转换为整数。但是,它们实际上是numpy
数组,因为time
是一个数组。您不能将数组转换为单个整数,因为它具有多个值。我不知道为什么你正在尝试做的,你可能只是想删除int()
,并将其更改为
mydata = sd.rec(result + result2 + result3 + result4, sampling_frequency, channels=2, blocking=True)
如果添加了完整的错误消息,这将是有益的,因为它规定了哪些生产线成品率错误。 – Coolness