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我想用python程序记录我的笔记本电脑发出的声音。我找到了
PyAudio
并提出了以下完成任务的方案:
import pyaudio, wave, sys
chunk = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = sys.argv[1]
p = pyaudio.PyAudio()
channel_map = (0, 1)
stream_info = pyaudio.PaMacCoreStreamInfo(
flags = pyaudio.PaMacCoreStreamInfo.paMacCorePlayNice,
channel_map = channel_map)
stream = p.open(format = FORMAT,
rate = RATE,
input = True,
input_host_api_specific_stream_info = stream_info,
channels = CHANNELS)
all = []
for i in range(0, RATE / chunk * RECORD_SECONDS):
data = stream.read(chunk)
all.append(data)
stream.close()
p.terminate()
data = ''.join(all)
wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(data)
wf.close()
问题是我得把耳机插孔接到麦克风插孔上。我试着替换这些线条:
input = True,
input_host_api_specific_stream_info = stream_info,
用这些:
output = True,
output_host_api_specific_stream_info = stream_info,
但是我得到了这个错误:
回溯(最近一次呼叫的最后一次):
文件“./test.py”,第25行,in
数据=流读取(块)
文件“/library/python/2.5/site packages/pyaudio.py”,第562行,已读
pacannotreadfromanoutputonlystream)
ioerror:[错误号不是输入流]-9975
有没有一种方法来实例化pyaudio流,以便它从计算机的输出输入,而我不必将耳机插孔连接到麦克风?有更好的方法吗?我更喜欢使用python应用程序,避免使用cocoa。
