Automatic Gain Control algorithms for wireless sensors

Wireless sensors are small-capacity devices with low consumption. Their capabilities already exceed the limit required for telephone-quality audio recording and processing, which calls for porting a number of speech processing applications. To do it, however, dynamically adjusting the sensitivity of their microphone is vital, which is called Automatic Gain Control (AGC). In this study we employed two simple algorithms for this task and will show that they can indeed be very effective in distant recording conditions, especially as it requires techniques which have low computational requirements.