我创建了一个通过语音指令获取英语词含义的应用程序。 当用户给出语音手势时, 我需要显示他触摸的按钮上的声音强度, 以启动语音识别 。 我有 5 个不同的图标, 我应该根据强度显示它 。 所以我应该找到声音强度的范围 。 这是否可行? 请帮助 。
如果将信号编码为PCM 格式, 强度是信号值的平均值方形( 和 x%2 / n) 。 您只需在PCM 中记录一个信号, 并用滑动窗口计算平均值 。 见
http://developer.android.com/reference/android/media/AudioRecord.html
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