Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Train times? Yes, ask the machine

10.10.2003


Robots, machines that speak, answering machines that understand what we say ... will be soon a regular part of our daily life. Concretely the University of the Basque Country (EHU/UPV), together with the universities of Zaragoza and Valencia, is developing a system capable of recognising speech. The aim of the project is to develop a machine which responds automatically to the user who asks for information about trains and timetables.

The machine will be able to recognise the voice of the person asking for information, understand what is being said and then find the data and respond appropriately. In order to carry this function out, the machine will have to synthesise the voice.

Speech recognition



The first step the machine has to take is speech recognition. This function is being developed by the UPV/EHU research group which first has had to gather together all the phonemes in a language, in this case Spanish and to these are then added information about different manners of pronunciation and about coarticulation. It is well known that a phoneme is pronounced in a differentiated manner depending on what precedes or follows it – this is known as coarticulation. Moreover, the differences that can arise depending on context are also taken into account. Finally, with all this data, phoneme patterns are drawn up.

In a second phase, the pattern of the language is completed; the pattern which, in this context, is to be used. Given that the language register used in the questions is limited in breadth and depth – the language of aerospace, for example, is not going to be used - a person asking for information about trains uses a specific, limited register of words and expressions.

Subsequently, the phonemes and language patterns are unified and features of spontaneous speech are added; for example, the pauses that we make between one word and another, linguistic fillers or other sounds without meaning, repetitions and so on.

Once all these patterns are unified, the research team drew up an information programme which can carry out a statistic analysis of those questions and the ways of effecting them as represented in samples and interprets what the end-user is saying in each case. Thus, it can be said that understanding speech is the first step.

Subsequently, the system developed by UPV/EHU is integrated with the rest of the units involved: that of conversation management, the one that seeks the date asked for, the unit that creates the response, that which synthesises the voice and, finally, the unit that transmits the information. Moreover, these units are not located in one, single site but are spread out in Zaragoza, Valencia and Leioa (the Bilbao campus of the Basque University) and, thus, large amounts of information are sent in real time.

Because of this the system has to be secure and, moreover, having the units physically separated confers another advantage on the system: it is modular. So, if one of the units fails, it is only a matter of fixing or changing that unit.

Contact :
Garazi Andonegi
ELHUYAR Fundazioa
garazi@elhuyar.com
(+34) 943363040

Garazi Andonegi | Basque research
Further information:
http://www.basqueresearch.com/berria_irakurri.asp?Gelaxka=1_1&Berri_Kod=336&hizk=I
http://www.ehu.es

More articles from Information Technology:

nachricht Controlling robots with brainwaves and hand gestures
20.06.2018 | Massachusetts Institute of Technology, CSAIL

nachricht Innovative autonomous system for identifying schools of fish
20.06.2018 | IMDEA Networks Institute

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>