python录制扬声器

以下是使用标准库wave+扩展库PyAudio录制扬声器声音的Python代码示例：

import pyaudio
import wave

# 配置录音参数
CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
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...")

# 录音缓存
frames = []

# 录音
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

print("录音结束！")

# 关闭音频流
stream.stop_stream()
stream.close()
audio.terminate()

# 写入WAV文件
wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(audio.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()

# 播放录音
wf = wave.open(WAVE_OUTPUT_FILENAME, 'rb')
audio = pyaudio.PyAudio()
stream = audio.open(format=audio.get_format_from_width(wf.getsampwidth()),
                    channels=wf.getnchannels(),
                    rate=wf.getframerate(),
                    output=True)
data = wf.readframes(CHUNK)
while data:
    stream.write(data)
    data = wf.readframes(CHUNK)
stream.stop_stream()
stream.close()
audio.terminate()

该代码将录制计算机扬声器的输出并将其保存为WAV文件。它还将播放录制的音频以供检查。

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