AlfaNum - speech technologies

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Main objectives and activities

The development of flexible text-to-speech synthesis (TTS) of high quality
The development of large vocabulary continuous automatic speech recognition (ASR)
The research and development of emotion speech recognition
The development of speech morphing systems
The development of natural language processing modules including dialogue management
The application of the developed speech technologies in Western Balkan countries:
- in multimodal human-machine dialogue systems (IVR, smart phones, smart homes)
- for purposes such as: text reading, text dictation, speech transcription
- within aids for the physically disabled, visually impaired, speech impaired, hearing impaired.

The most important innovative results

One can listen to news at a number of speech-enabled web sites (Radio Television of Serbia - RTS, Radio Television of Vojvodina - RTV, eUprava, as well as several municipalities) using a computer or a smart phone. The visually impaired can listen to any text displayed on the screen using the software anReader based on AlfaNumTTS. The AlfaNumASR and AlfaNumTTS components have provided smart phones with basic speech generation and understanding functionalities in Serbian.

Further development of both large vocabulary ASR and more advanced TTS is based on the aforementioned speech and language resources. Both technologies will enable a much wider range of applications and will contribute to the preservation of Serbian and kindred languages in this new domain of communication – spoken dialogue between humans and machines.

Speech is the basic means of communication between humans.

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Speech

Speech is the basic means of communication between humans

Using speech, humans can convey their thoughts and feelings to others in a way much more intricate than in any other animal species, and thus the human speech system is the most complicated one...

ASR

Automatic Speech Recognition

Automatic speech recognition (ASR) is considered one of the greatest technical challenges of today, attracting attention of many researchers worldwide for more than half a century...

TTS

Text-to-Speech Synthesis

Text-to-Speech Synthesis (TTS) is the oldest speech technology, originating from as early as the 18th century, when first "speaking machines" appeared...