python的pyaudio卡拉OK

这个很简单的小玩意,大神误笑,小的就是刚刚开始接触这个东西哈。

卡拉OK原理其实就是先录声音,然后再把录得声音直接放出来,可以说不经过存储吧

录制是双通道的,采样率是44100格式pyaudio.paInt16.

不多说,上源码

#!/usr/bin/python
# *_* coding:utf-8 *_*
# python的pyaudio卡拉OK
import pyaudio
import wave
import random
import numpy as np
import time

p = pyaudio.PyAudio()

stream_in = p.open(format=pyaudio.paInt16,#格式
    channels=2,#通道
    rate=44100,#采样率
    input=True,
    frames_per_buffer=1024)

stream_out = p.open(format = pyaudio.paInt16,
	channels = 2,
	rate = 44100,
	output = True)

print "recording"

frames=[]
for i in range(0,int(44100/1024*100)):# 100录音秒数
    data = stream_in.read(1024)

    data_array = np.fromstring(data,dtype = np.short)

    for j in xrange(len(data_array)):
        data_array[j] = data_array[j] + random.uniform(-5,5)

    data = data_array.tostring()
    stream_out.write(data)
    frames.append(data)

print "recording ok"

stream_in.stop_stream()
stream_in.close()
p.terminate()

# 保存刚刚所录,其实如果只要实现卡拉OK用不着这不吧。
wf=wave.open("recording.wav",'wb')
wf.setnchannels(2)
wf.setsampwidth(p.get_sample_size(pyaudio.paInt16))
wf.setframerate(44100)
wf.writeframes(b''.join(frames))
wf.close()

这整个代码里头是有一些看上用不着的东西的,咋们可以自己去删。

至于运行,我的是在

windows10,cmd命令行下进行的,

python版本2.7

以下是简要

#!/usr/bin/python
# *_* coding:utf-8 *_*
# python的pyaudio卡拉OK简要声纹改变
import pyaudio
import wave
import random
import numpy as np
import time

p = pyaudio.PyAudio()

stream_in = p.open(format=pyaudio.paInt16,#格式
    channels=2,#通道
    rate=44100,#采样率
    input=True,
    frames_per_buffer=1024)

stream_out = p.open(format = pyaudio.paInt16,
    channels = 2,
    rate = 44100,
    output = True)

print "recording"

frames=[]
k = 0
while True:
    data = stream_in.read(1024)
    data_array = np.fromstring(data,dtype = np.short)
    print len(frames)
    # print frames
    if len(frames) > 2:
        max_value_now = max(frames[len(frames) - 1])
        max_value_late = max(frames[len(frames) - 2])
        print max_value_now
        print max_value_late
        # rate_v_l = max_value_late / max_value_now
        # if rate_v_l > 10:
            # k = 1

    for j in xrange(len(data_array)):
        # data_array[j] = data_array[j] + random.uniform(-5,5)
        # data_array[j] = max_value
        # print data_array[j]
        modulo = data_array[j] % 10
        if modulo > 5:
            data_array[j] = data_array[j] + (10 - modulo)
        else:
            data_array[j] = data_array[j] - modulo
    data = data_array.tostring()
    stream_out.write(data)
    frames.append(data)
    if k != 0:
        k = 0
        print "start"
        time.sleep(5)
        print "end"
    # k += 1
    
print "recording ok"

stream_in.stop_stream()
stream_in.close()
p.terminate()
  
wf=wave.open("recording.wav",'wb')
wf.setnchannels(2)
wf.setsampwidth(p.get_sample_size(pyaudio.paInt16))
wf.setframerate(44100)
wf.writeframes(b''.join(frames))
wf.close()

这两个之间最大的不同在于,后面的更乱哈哈。

好吧,其实前一个也好,后一个也好,我都在所录的数据中对数据进行了修整吧,我也是小白,不太懂。

最后一个小门,代码的

http://download.csdn.net/download/qq_20081893/10273784

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