麦克风问题 [英] Microphone Questions
本文介绍了麦克风问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在使用麦克风的Windows Phone 8上，不录音而是打开麦克风，仅在有噪音时才录音.有点像不记录死角，而只是在有人开始讲话时才记录.我想开始录音
On Windows Phone 8, using the Microphone, is there a way to not record but to turn the microphone on and only record when there is noise. Kind of like not recording the dead space but only when someone starts speaking. I would guess start recording when it reaches a certain level or something?
推荐答案
从理论上讲，一个应用可以监视麦克风音频的平均振幅(跟踪正负峰值并保持运行平均值)，然后在达到最小阈值时开始记录.
In theory an app could monitor the average amplitude of the microphone audio (keep track of positive and negative peaks and keep a running average) and then start recording when it reaches a minimum threshold.
-马克
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