python - 从存储在数组中的波形播放声音

Question

我目前正在试验用 Python 生成声音，我很好奇如何使用 n 数组表示波形(采样率为 44100 赫兹)并播放它。我在这里寻找纯 Python，而不是依赖于不仅仅支持 .wav 格式的库。

Answer 1

或使用 sounddevice模块。使用 pip install sounddevice 安装，但您首先需要这个:sudo apt-get install libportaudio2

绝对基础:

import numpy as np
import sounddevice as sd

sd.play(myarray) 
#may need to be normalised like in below example
#myarray must be a numpy array. If not, convert with np.array(myarray)

还有几个选项:

import numpy as np
import sounddevice as sd

#variables
samplfreq = 100   #the sampling frequency of your data (mine=100Hz, yours=44100)
factor = 10       #incr./decr frequency (speed up / slow down by a factor) (normal speed = 1)

#data
print('..interpolating data')
arr = myarray

#normalise the data to between -1 and 1. If your data wasn't/isn't normalised it will be very noisy when played here
sd.play( arr / np.max(np.abs(arr)), samplfreq*factor)