如何在Google Colab上安装PortAudio库？

!apt-get install -y portaudio19-dev

!pip install pyaudio

import pyaudio
import wave

# 设置录音参数
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 1024
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"

# 初始化PyAudio
audio = pyaudio.PyAudio()

# 打开音频流
stream = audio.open(format=FORMAT,
                    channels=CHANNELS,
                    rate=RATE,
                    input=True,
                    frames_per_buffer=CHUNK)

print("开始录音...")

# 录制音频数据
frames = []
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

print("录音结束.")

# 停止音频流
stream.stop_stream()
stream.close()
audio.terminate()

# 保存录制的音频数据为WAV文件
waveFile = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(b''.join(frames))
waveFile.close()