如下所示：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
#!/usr/bin/env python# -*- coding: utf-8 -*-######################################################################### # Copyright (c) 2017 aibot.me, Inc. All Rights Reserved# ######################################################################## """File: gen_wav.pyDate: 2017/03/24 12:36:27Brief: 通过麦克风录音 生成 wav文件"""import osimport sysimport waveimport numpy as np from datetime import datetimefrom pyaudio import PyAudio, paInt16class GenAudio(object): def __init__(self): self.num_samples = 2000 #pyaudio内置缓冲大小 self.sampling_rate = 8000 #取样频率 self.level = 1500 #声音保存的阈值 self.count_num = 20 #count_num个取样之内出现COUNT_NUM个大于LEVEL的取样则记录声音 self.save_length = 8 #声音记录的最小长度：save_length * num_samples 个取样 self.time_count = 8 #录音时间，单位s self.voice_string = [] #保存文件 def save_wav(self, filename): wf = wave.open(filename, 'wb') wf.setnchannels(1) wf.setsampwidth(2) wf.setframerate(self.sampling_rate) wf.writeframes(np.array(self.voice_string).tostring()) wf.close() def read_audio(self): pa = PyAudio() stream = pa.open(format=paInt16, channels=1, rate=self.sampling_rate, input=True, frames_per_buffer=self.num_samples) save_count = 0 save_buffer = [] time_count = self.time_count while True: time_count -= 1 # 读入num_samples个取样 string_audio_data = stream.read(self.num_samples) # 将读入的数据转换为数组 audio_data = np.fromstring(string_audio_data, dtype = np.short) #计算大于 level 的取样的个数 large_sample_count = np.sum(audio_data > self.level) print(np.max(audio_data)), "large_sample_count=>", large_sample_count # 如果个数大于COUNT_NUM，则至少保存SAVE_LENGTH个块 if large_sample_count > self.count_num: save_count = self.save_length else: save_count -= 1 if save_count < 0: save_count = 0 if save_count > 0: save_buffer.append(string_audio_data) else: if len(save_buffer) > 0: self.voice_string = save_buffer save_buffer = [] print("Recode a piece of voice successfully!") return True if time_count == 0: if len(save_buffer) > 0: self.voice_string = save_buffer save_buffer = [] print("Recode a piece of voice successfully!") return True else: return False return Trueif __name__ == "__main__": r = GenAudio() r.read_audio() r.save_wav("./test.wav") |
以上这篇python 通过麦克风录音 生成wav文件的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/coder_ai/article/details/66010493
