Speech Recognition on Mobile Devices

The enthusiasm of deploying automatic speech recognition (ASR) onmobile devices is driven both by remarkable advances in ASR technology andby the demand for efficient user interfaces on such devices as mobile phonesand personal digital assistants (PDAs). This chapter presents an overview ofASR in the mobile context covering motivations, challenges, fundamentaltechniques and applications. Three ASR architectures are introduced: embeddedspeech recognition, distributed speech recognition and network speechrecognition. Their pros and cons and implementation issues are discussed.Applications within command and control, text entry and search are presentedwith an emphasis on mobile text entry