使用pyaudio录音

Question

我正在尝试使用 python 录制语音。我尝试使用 pyaudio 模块，它在我的电脑上保存了一个 wav 文件，但录制了一个静态语音。有什么建议吗？

import pyaudio
import wave

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "voice.wav"

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(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()

Answer 1

您的代码适用于我的环境：Win7 和 Python3.4 - 我使用笔记本电脑的麦克风录制了我的声音。也许您的麦克风录音电平设置得太低。还是静音或禁用？

Answer 2

首先，请确保您的麦克风确实已连接、打开且未静音。

您在打开流时没有提供设备索引。这意味着您将获得 PyAudio 认为默认的设备。这可能不是你的麦克风。

在交互式 Python 会话中使用 PyAudio 对象的 get_device_count 和 get_device_info_by_index 方法。打印 get_device_info_by_index returns 的字典以确定哪个设备索引代表您的麦克风，并在打开流时提供该索引号作为 input_device_index 参数。

Answer 3

确保您的麦克风已连接到计算机。可以使用以下代码识别它。

import speech_recognition as sr
for index, name in enumerate(sr.Microphone.list_microphone_names()):
    print("Microphone with name \"{1}\" found for microphone(device_index{0})".format(index, name))

Answer 4

下面的代码将列出可用录音设备的索引，然后用户可以给出一个特定的索引作为输入，代码将通过给定的录音设备索引开始录音。

import pyaudio
import wave
 
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 512
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "recordedFile.wav"
device_index = 2
audio = pyaudio.PyAudio()

print("----------------------record device list---------------------")
info = audio.get_host_api_info_by_index(0)
numdevices = info.get('deviceCount')
for i in range(0, numdevices):
        if (audio.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
            print("Input Device id ", i, " - ", audio.get_device_info_by_host_api_device_index(0, i).get('name'))

print("-------------------------------------------------------------")

index = int(input())
print("recording via index "+str(index))

stream = audio.open(format=FORMAT, channels=CHANNELS,
                rate=RATE, input=True,input_device_index = index,
                frames_per_buffer=CHUNK)
print ("recording started")
Recordframes = []
 
for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    Recordframes.append(data)
print ("recording stopped")
 
stream.stop_stream()
stream.close()
audio.terminate()
 
waveFile = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(b''.join(Recordframes))
waveFile.close()

使用pyaudio录音

voice recording using pyaudio

python

voice

pyaudio