python实现播放音频和录音功能示例代码

"""PyAudio Example: Play a WAVE file."""

import pyaudio
import wave


CHUNK = 1024
FILENAME = '你的音频文件'

def play(filename = FILENAME):
 wf = wave.open(filename, '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(CHUNK)

 while data != b'':
 stream.write(data)
 data = wf.readframes(CHUNK)

 stream.stop_stream()
 stream.close()

 p.terminate()

import IPython.display as ipd
ipd.Audio(文件名)

# read wav file from path
from scipy.io import wavfile
import librosa
import pyaudio

# wave
file = wave.open(path,'rb')
# wavfile
rate, data = wavfile.read(path)
# librosa
y, sr = librosa.load(path)

from scipy.io import wavfile
import matplotlib.pyplot as plt
import numpy as np
%matplotlib inline

# 一秒采样数
sr, wave = wavfile.read('D://QQPCMgr/Desktop/python3/skip.wav')
sample_number = wave.shape[0]
total_time = int(sample_number / sr * 1000)
time_series = np.linspace(0,total_time,sample_number)
fig, ax = plt.subplots(1, 1)
ax.plot(time_series, wave)
ax.set_title('Time*Amplitude')
ax.set_xlabel('Time/ms')
ax.set_ylabel('Amplitude/dB')

import wave
import pyaudio
import matplotlib.pyplot as plt
import time

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 5


def record(filename='output.wav'):
 """官方录音教程
 """
 
 p = pyaudio.PyAudio()
 
 stream = p.open(format=FORMAT,
   channels=CHANNELS,
   rate=RATE,
   input=True,
   frames_per_buffer=CHUNK)
 
 print("* recording")
 
 frames = []

 for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
 data = stream.read(CHUNK)
 frames.append(data)
 
 print("* done recording")
 
 stream.stop_stream()
 stream.close()
 p.terminate()
 
 wf = wave.open(filename, 'wb')
 wf.setnchannels(CHANNELS)
 wf.setsampwidth(p.get_sample_size(FORMAT))
 wf.setframerate(RATE)
 wf.writeframes(b''.join(frames))
 wf.close()


def multi_record(num=3):
 """implement 多次录音"""
 for i in range(1,num+1):
 print('第{}次录音准备'.format(i))
 filename = 'record_{}.wav'.format(i)
 record(filename)
 time.sleep(second)
 _ = input('进行下一次录音？')


def main():
 multi_record()

if __name__ == '__main__':
 main()