pyaudio与优美的声音

安装pyaudio

sudo apt-get install python-pyaudio python3-pyaudio

声音录制

import pyaudioimport wavedef record_audio(wave_out_path,record_second):  CHUNK = 1024  FORMAT = pyaudio.paInt16  CHANNELS = 2  RATE = 44100  p = pyaudio.PyAudio()  stream = p.open(format=FORMAT,          channels=CHANNELS,          rate=RATE,          input=True,          frames_per_buffer=CHUNK)  wf = wave.open(wave_out_path, 'wb')  wf.setnchannels(CHANNELS)  wf.setsampwidth(p.get_sample_size(FORMAT))  wf.setframerate(RATE)  print("设置参数完毕")  print("开始录制声音")  # int(RATE / CHUNK * record_second)录制时间内,需要读取多少次数据  # CHUNK一次采样数据多少  # RATE一秒采样多少  for _ in range(0, int(RATE / CHUNK * record_second)):    data = stream.read(CHUNK)    wf.writeframes(data)        print("录制完成")    stream.stop_stream()  stream.close()  p.terminate()  wf.close()if __name__ == '__main__':    record_audio("output.wav",record_second=4)

声音播放

import pyaudioimport wavefrom tqdm import tqdmdef play_audio(wave_path):  CHUNK = 1024  wf = wave.open(wave_path, 'rb')  # instantiate PyAudio (1)  p = pyaudio.PyAudio()  # open stream (2)  stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),          channels=wf.getnchannels(),          rate=wf.getframerate(),          output=True)    # read data  data = wf.readframes(CHUNK)  # play stream (3)  datas = []  while len(data) > 0:    data = wf.readframes(CHUNK)    datas.append(data)  for d in tqdm(datas):    stream.write(d)  # stop stream (4)  stream.stop_stream()  stream.close()  # close PyAudio (5)  p.terminate()if __name__ == '__main__':    play_audio("output.wav")

在执行其他程序时同时播放音频，可以使用回调的方式播放

import pyaudioimport wavefrom tqdm import tqdmimport timedef play_audio_callback(wave_path):  CHUNK = 1024  wf = wave.open(wave_path, 'rb')  # instantiate PyAudio (1)  p = pyaudio.PyAudio()  def callback(in_data, frame_count, time_info, status):    data = wf.readframes(frame_count)    return (data, pyaudio.paContinue)  # open stream (2)  stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),          channels=wf.getnchannels(),          rate=wf.getframerate(),          output=True,          stream_callback=callback)  # read data  stream.start_stream()  while stream.is_active():    time.sleep(0.1)  # stop stream (4)  stream.stop_stream()  stream.close()  # close PyAudio (5)  p.terminate()play_audio_callback("output.wav")

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