Python音频功能无法正常工作

Python audio function not working as expected

这是该帖子的后续内容：
Python在检测到的声音上记录音频

我现在对其中的大多数进行了排序，但是仍然存在一个错误。

程序运行一次后，保存一个录音并将其输入到DB中，然后返回以打印收听和等待语音。不管音量有多大，它都不会再次录制，您必须退出程序吗？

我已经删除了listen()功能，所以现在回到基础知识，寻找从头开始录音结束后等待下一个音频的方法。

此处显示当前代码：

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import pyaudio
import math
import struct
import wave
import datetime
import os
import sys
import MySQLdb

utc_datetime = datetime.datetime.utcnow()
FileTime = utc_datetime.strftime("%Y-%m-%d-%H%M")

#Assuming Energy threshold upper than 30 dB
Threshold = 30

SHORT_NORMALIZE = (1.0/32768.0)
chunk = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 16000
swidth = 2
Max_Seconds = 5
TimeoutSignal=((RATE / chunk * Max_Seconds) + 2)
silence = True
FileNameTmp = '/var/www/Recordings/'+FileTime+'.wav'
FileNameWWW = 'Recordings/'+FileTime+'.wav'
Time=0
all =[]

p = pyaudio.PyAudio()

stream = p.open(format = FORMAT,
channels = CHANNELS,
rate = RATE,
input = True,
output = True,
frames_per_buffer = chunk)

# SQL DB Connection
db = MySQLdb.connect("localhost","root","*****","radiolink" )
cursor = db.cursor()

def GetStream(chunk):
return stream.read(chunk)

def rms(frame):
count = len(frame)/swidth
format ="%dh"%(count)
shorts = struct.unpack( format, frame )

sum_squares = 0.0
for sample in shorts:
n = sample * SHORT_NORMALIZE
sum_squares += n*n
rms = math.pow(sum_squares/count,0.5);

return rms * 1000

# Define What to Do When WriteSpeech is Called
def WriteSpeech(WriteData):
stream.stop_stream()
stream.close()
p.terminate()
wf = wave.open(FileNameTmp, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(WriteData)
wf.close()

def KeepRecord(TimeoutSignal, LastBlock):

all.append(LastBlock)
for i in range(0, TimeoutSignal):
try:
data = GetStream(chunk)
except:
continue

all.append(data)

print"end record after timeout";
data = ''.join(all)
print"Creating File" +FileNameTmp;

WriteSpeech(data)
print"Entering Record into DB";
File = FileNameWWW
query ="""
INSERT INTO recordings
(`id`, `time`,`filename`,`active`,`status`)
VALUES
(NULL,NOW(), %s,1,1)"""

cursor.execute(query,(File))
db.commit()
silence = True
Time=0

print"Listening......"
print"Waiting for Speech"
while silence:

try:

input = GetStream(chunk)

except:

continue

rms_value = rms(input)

if (rms_value > Threshold):

silence=False

LastBlock=input

print"Recording...."
KeepRecord(TimeoutSignal, LastBlock)

Time = Time + 1
if (Time > TimeoutSignal):
print"Waiting No Speech Detected"
sys.exit()