python实时播放音频和录音

python实时播放音频和录音

我一直在尝试使用python中的“pyAudio”模块进行实时音频信号处理。我所做的只是一个简单的例子，从麦克风读取音频数据并通过耳机播放。我尝试了以下代码(Python和Cython版本)。我以为它能用，但不幸的是它太慢了，不够光滑。我该如何改进代码，使其能够顺利运行。我的电脑是i7，8GB内存。

Python版本import pyaudio

import numpy as np

RATE = 16000

CHUK = 256

p = pyaudio.PyAudio()

player = (format=pyaudio.paInt16, channels=1, rate=RATE, output=True,

frames_per_buffer=CHUK)

stream = (format=pyaudio.paInt16, channels=1, rate=RATE, input=True, frames_per_buffer=CHUK)

for i in range(int(20*RATE/CHUK)): #do this for 10 seconds

player.write(np.fromstring(stream.read(CHUK),dtype=np.int16))

stream.stop_stream()

()

()

Cython版本import pyaudio

import numpy as np

cdef int RATE = 16000

cdef int CHUK = 1024

cdef int i

p = pyaudio.PyAudio()

player = (format=pyaudio.paInt16, channels=1, rate=RATE, output=True, frames_per_buffer=CHUK)

stream = (format=pyaudio.paInt16, channels=1, rate=RATE, input=True, frames_per_buffer=CHUK)

for i in range(500): #do this for 10 seconds

player.write(np.fromstring(stream.read(CHUK),dtype=np.int16))

stream.stop_stream()

()

()