如何让pyttsx3在python中的实时视频捕获中停止说话

Question

下面的代码显示人脸并使用语音生成输出。问题是我无法阻止声音，我希望它只说一次，而不是每拍一帧P.S我试过用计时器，但没有用。

import cv2
import pyttsx3
cap = cv2.VideoCapture(0)
voiceEngine = pyttsx3.init()
while(True):
# Capture frame-by-frame
success, frame = cap.read()

# Our operations on the frame come here
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
if success:
voiceEngine.say("hello there")
voiceEngine.runAndWait()

cv2.imshow('frame',gray)
if cv2.waitKey(1) & 0xFF == 27:
break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()

Answer 1

这就是标志的作用。

said = False
while True:
...
if success and not said:
voiceEngine.say("hello there")
voiceEngine.runAndWait()
said = True