pyAudio-从命令行随意停止录制

Question

我对Python并不是很好。最近，我一直在玩pyAudio并使用一个设法记录系统声音的简单脚本。问题是，我使用的脚本是使用固定计时器运行的。相反，我想随时从命令行结束录制。

有没有人知道如何实现这一目标？

import pyaudio
import wave
import sys

DURATION = int(sys.argv[1])
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
CHUNK = 1024
RECORD_SECONDS = DURATION
WAVE_OUTPUT_FILENAME = "file.wav"
print("hello")

p = pyaudio.PyAudio()


stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)

print("Recording")

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)
print("Finished recording") 

stream.stop_stream()
stream.close()
p.terminate()

waveFile = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(p.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(b''.join(frames))
waveFile.close()