 Hello, I am Roberto Sannino with the Steam Microelectronics, and this video is about an application that is called Blue Voice, which concerns voice over Bluetooth Low Energy wireless link. Blue Energy is a key building block of wearable and Internet of Things application, and it's becoming a sort of a platform on top of which several applications are built. These applications are described as profiled by the Bluetooth Low Energy standard, and none of this profile as of today covers voice or audio. So we have decided to go on and develop our own Blue Voice application, which is built upon these set of boards, boards belonging to the STM32 Open Development Environment by Steam Microelectronics, which offer a wide range of sensors, processors, and wireless communication boards that can be combined as building blocks in order to build various applications. In this particular case we are using these three boards, which you see here on the table, the Bluetooth Low Energy expansion board, an STM32 nuclear board, and of course, being an audio application, a digital MEMS microphone expansion board. The three boards can be combined through the expansions that are built in. In particular, the MEMS microphone board can be plugged into the STM32 nuclear board via this so-called Morph application in order to implement a basic digital microphone, that is a stereo microphone using two of these microphones. Let's now look at the actual Blue Voice system, which we implement using these two units, the receiving unit and the transmission unit. The two systems are built with the same set of nuclear expansion boards, and in particular in the receiving unit the audio expansion will be used to stream the decompressed audio into a recording unit, like a PC in this case. So we power the system via USB, both systems, and we turn on and off transmission by pressing the blue button that's on the nuclear board. So when I press the blue button, the systems that are already connected start the actual streaming operation by sending notification from server to client according to the Bluetooth Low Energy standard, and by pressing again the blue button I can stop the streaming operation while the system keeps the connection open. So let's turn on the actual wireless microphone, and when I speak into the microphone you will see my voice received and decompressed and displayed on the monitor of the PC, as you can see now through the audacity facility. Speech recognition is a very important functionality for wearable and internet of things system, and now we show how the voice processing that is performing within the Blue Voice application doesn't alter the quality of audio and makes it suitable for voice commands, for example. We are going to talk into the Google APIs for Vocal Search. Let's turn on the system. Take me to Milan Expo 2015. As you can see, the audio has been perfectly recognized by the Google Vocal Search APIs. You have seen the Blue Voice application deployed with the STM32 nuclear and open development environment from STMAC Electronics, which allows you to develop a number of different applications all based on STMAC Electronics components. In particular with the Blue Voice application we could stream voice over Bluetooth Low Energy link exploiting the very good throughput of our Blue Energy component. With this I thank you for your attention and for any further information you may refer to www.st.com.