The manual use of smartphone's Internet access while driving endangers the drivers safety. Therefore, an intuitive in-car speech interface to the Internet is crucial. In this paper we present an in-car speech dialog system prototype which allows the user to access several Internet services by speech. In order to reduce driver distraction the system is controlled by natural speech and the visual feedback is very limited. The speech dialog system is based on hybrid automatic speech recognition technologies used for different types of recognition tasks.

Index Terms: Speech dialog system, hybrid automatic speech recognition, Internet services