Question

自上周以来，我一直在寻找这个。也尝试了pyaudio，当我使用它的另一个前叉时，系统音频与麦克风音频混合在一起。我无法为此找到其他模块，因此最终提出了问题。

编辑：

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        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
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          </li>
          <li class="nav-item">
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此代码是从堆栈溢出中获取的。它记录扬声器的输出，但输出与麦克风的输入混在一起。所使用的pyaudio模块也来自分支：https://github.com/intxcc/pyaudio_portaudio。

Answer 1

使用https://github.com/intxcc/pyaudio_portaudio
这只记录“device_id”指定的设备的音频

import pyaudio
import wave

chunk = 1024  # Record in chunks of 1024 samples
sample_format = pyaudio.paInt16  # 16 bits per sample
channels = 2
fs = 44100  # Record at 44100 samples per second
seconds = 3
filename = "output.wav"

p = pyaudio.PyAudio()  # Create an interface to PortAudio

#Select Device
print ( "Available devices:\n")
for i in range(0, p.get_device_count()):
    info = p.get_device_info_by_index(i)
    print ( str(info["index"]) +  ": \t %s \n \t %s \n" % (info["name"], p.get_host_api_info_by_index(info["hostApi"])["name"]))
    pass

#ToDo change to your device ID
device_id = 7
device_info = p.get_device_info_by_index(device_id)
channels = device_info["maxInputChannels"] if (device_info["maxOutputChannels"] < device_info["maxInputChannels"]) else device_info["maxOutputChannels"]
# https://people.csail.mit.edu/hubert/pyaudio/docs/#pyaudio.Stream.__init__
stream = p.open(format=sample_format,
                channels=channels,
                rate=int(device_info["defaultSampleRate"]),
                input=True,
                frames_per_buffer=chunk,
                input_device_index=device_info["index"],
                as_loopback=True
                )

frames = []  # Initialize array to store frames

print('\nRecording', device_id, '...\n')

# Store data in chunks for 3 seconds
for i in range(0, int(fs / chunk * seconds)):
    data = stream.read(chunk)
    frames.append(data)

# Stop and close the stream 
stream.stop_stream()
stream.close()
# Terminate the PortAudio interface
p.terminate()

print('Finished recording')

# Save the recorded data as a WAV file
wf = wave.open(filename, 'wb')
wf.setnchannels(channels)
wf.setsampwidth(p.get_sample_size(sample_format))
wf.setframerate(fs)
wf.writeframes(b''.join(frames))
wf.close()

附言退房https://github.com/intxcc/pyaudio_portaudio/tree/master/example

Python-如何录制系统音频（扬声器的输出）？

1 个答案: