Python如何运用pyaudio库去做一个固定采样率音频录制器

# -*- coding: utf-8 -*-
"""
Spyder Editor
This is a temporary script file.
"""
import pyaudio
import wave
CHUNK=256#设置底缓存块的大小为256
FORMAT=pyaudio.paInt16#设置采样深度为16位
CHANNELS=2#设置声道数为2
RATE=16000#设置采样率16
RECORD_SECONDS=10#录音时长为10s
p=pyaudio.PyAudio()#实例化一个对象
#打开声卡
stream=p.open(format=FORMAT,
                  channels=CHANNELS,
                  rate=RATE,               
                  input=True,
                  frames_per_buffer=CHUNK)
#创建列表用来储存采样的音频数据
record_buf=[]
print("***开始录音：请在10s内输入语音***")
for i in range(0,int(RATE/CHUNK*RECORD_SECONDS)):
    data=stream.read(CHUNK)
    record_buf.append(data)
print("***录音结束***")
wf=wave.open('audiol.wav','wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(record_buf))
wf.close()#写完后关闭声卡
stream.stop_stream()#停止声卡
stream.close()#关闭声卡
p.terminate()#终止pyaudio

import pyaudio
import wave
from tqdm import tqdm
def record_audio(wave_out_path,record_second):
	  FORMAT = pyaudio.paInt16#音频数据格式
	  CHANNELS = 2#声道数
	  RATE = 44100#采样率
	  CHUNK = 1024#每次读多少个数据
	  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))#其实就是2,表示两个字节
	  wf.setframerate(RATE)
	  print("* recording")
	  ## RATE / CHUNK * record_second意思是：
	  ## 采样率是RATE，每秒采集RATE个数据，所以每秒的音频需要读取RATE / CHUNK次
	  for i in tqdm(range(0, int(RATE / CHUNK * record_second))):
		    data = stream.read(CHUNK)
		    wf.writeframes(data)
	  print("* done recording")
	  stream.stop_stream()
	  stream.close()
	  p.terminate()
	  wf.close()
record_audio("output.wav",record_second=4)

"""PyAudio Example: Play a WAVE file."""
import pyaudio
import wave
from tqdm import tqdm
def 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()
play_audio("output.wav")