Python library call pyaudio recording and playing wav audio file

1.Pyaudio Profile

　　PyAudio voice processing Python library that provides rich functionality.

2. Functions

　　The Pyaud python module can call the computer's microphone or audio recording, audio playback, generated wavfiles.

A wave is recorded with a file format standard WINDOWS, extension WAV, the format for the PCM data itself or compression type, belonging to a lossless music format.

3.Pyaudio installation

pip install pyaudio

Tsinghua recommended source Oh, fast

pip install pyaudio -i https://pypi.tuna.tsinghua.edu.cn/simple

4. Use recording Pyaudio

　　Import the required libraries

import wave
import pyaudio
 

def audio_record(out_file, rec_time):
    The CHUNK = 1024 
    the FORMAT = pyaudio.paInt16   # 16bit format encoding 
    the CHANNELS. 1 =   # Mono 
    the RATE = 16000   # 16000 sampling frequency

    P = pyaudio.PyAudio ()
     # create an audio stream 
    Stream = p.open (the format the FORMAT =,   # audio streams wav format 
                    channels = the CHANNELS,   # mono 
                    Rate = the RATE,   # sampling rate 16000 
                    INPUT = True,
                    frames_per_buffer=CHUNK)
​
    Print ( " Start Recording ... " )
​
    Frames = []   # recorded in the audio stream 
    # record audio data 
    for I in Range (0, int (the RATE / * the CHUNK rec_time)):
        data = stream.read(CHUNK)
        frames.append(data)
​
    # Recording is completed 
    stream.stop_stream ()
    stream.close()
    p.terminate()
​
    Print ( " complete ..... " )

 

It will be packaged into a function, go directly to the called function parameters are the file name and recording time.

5. Play the tape library using Pyaudio

import wave
import pyaudio
​
def play():
    the chunk = 1024   # 2014kb 
    WF = wave.open (R & lt " file name " , ' RB ' )
    p = pyaudio.PyAudio()
    stream = p.open(format=p.get_format_from_width(wf.getsampwidth()), channels=wf.getnchannels(),
                    rate=wf.getframerate(), output=True)
​
    Data = wf.readframes (the chunk)   # read data 
    Print (Data)
     the while Data = B! '' :   # Play 
        stream.write (data)
        data = wf.readframes(chunk)
        print('while循环中！')
        print(data)
    stream.stop_stream ()   # stop the flow 
    stream.close ()
    p.terminate ()   # close PyAudio 
Play ()

 

With more content refer to the official documentation ` http://people.csail.mit.edu/hubert/pyaudio/docs/ `