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Natural Language Processing
for Hungarian Speech Synthesis

Ilona Koutny

Dept. of Linguistics, UAM

This dissertation presents the NLP (Natural Language Processing) modules used in speech synthesis through the analysis of Hungarian. After an outline of the Hungarian language, it gives a dependency description of its syntax, based on its agglutinative morphology. The author analyzes the communicative structure of Hungarian sentences in terms of topic-focus as in different sentence settings. The main goal of the dissertation is to establish some correlation between syntax and prosody, and to work out the syntax–prosody interface. Taking into consideration the prosody of standard colloquial Hungarian, as analyzed by computer, a three-level intonation model has been developed, and used to describe and predict the prosody of different sentence types (planned for the Hungarian speech synthesis system Profivox). Applications of synthesized speech in computerized language learning and in the augmentative Bliss system are also presented, where a restricted language generation model was proposed for the Hungarian speaking version of Bliss.

Natural and Synthesized

Hungarian sentences

1. Declarative sentences

1.1. Non-emphatic declarative sentences with topic

D1            A tervezett tárgyalás után  levelet írok  a külföldi partnernek.

                 ‘After the planned negotiation,  I’ll write a letter  to the foreign partner.’

                                  Natural speech                       Synthesized speech

D9            A kórházakba tilos kutyákat bevinni.

                 ’Into the hospitals, it is not allowed to take dogs.’

                                  Natural speech                       Synthesized speech

1.2. Declarative sentences with focus

DF1         A tervezett tárgyalás után  csak a külföldi partnernek írok levelet.

                 ‘After the planned negotiation, only to the foreign partner I write letter.’

                                  Natural speech                       Synthesized speech

1.3. Alternative declarative sentences

DA1         Holnap gulyásleves vagy rántott hús lesz az ebéd.

                 ‘Tomorrow,  there will be goulash soup or breaded meat for  the dinner.’

                                  Natural speech                      Synthesized speech

1.4. Compound and complex sentences

DC1          István bekapcsolta számítógépet  és elindította a programot.

       ’István  turned on  the computer and started  the program.’

                                  Natural speech                      Synthesized speech

DC2          István  bekapcsolta a számítógépet, de nem dolgozott rajta..

                 István  turned on   the computer,  but he did not work  with it.’

                                  Natural speech                      Synthesized speech

1.5. Complex sentences

DS2          Nem mondták meg a főnöknek,  hogy  a gép elromlott.

                 ‘They did not tell  the boss  that  the machine has broken down.’

                                  Natural speech                      Synthesized speech

DS6          Szeretném tudni,  mikor érkezik  a külföldi partner.

                 ‘I would like to know  when will arrive  the foreign partner.’

                                  Natural speech                      Synthesized speech

DS11       Amikor hazajöttem a fárasztó munkából,  jó volt a lift.

         ‘When  I came home  from the exhausting work  good was  the elevator.’

                                  Natural speech                      Synthesized speech

DS15       Azt a filmet  néztem meg,  amelyről beszéltem neked a múlt héten.

     ‘That film  I watched  about what  I was telling you   last week.’

       ‘I watched the film I was telling you about last week.’

                                  Natural speech                      Synthesized speech

2. Interrogative sentences

2.1. Wh-questions

Q3            Mikor nem dolgozol?

           ‘When aren't you working?’

                                  Natural speech                       Synthesized speech             

Q2            Ezt a témát illetőleg mikor válaszoltok a kérdéseimre?

         ‘Regarding this topic when will you answer my questions?’

                                  Natural speech                       Synthesized speech

Q5            Mikor mész az üzletbe, és veszed meg kávét?

                 When will you go to the shop and buy the coffee?’

                                  Natural speech                       Synthesized speech

Q6            Mikor nézed meg azt a filmet, amiről a múlt héten beszéltél?

                 ‘When will you watch that film (what) you were talking about last week?’

                                  Natural speech                       Synthesized speech

2.2. Yes/no-questions

QY1        Megírod a levelet a külföldi partnernek?

       ‘Will you write the letter to the foreign partner?’

                                  Natural speech                       Synthesized speech

QY10      Elmész az üzletbe, és megveszed kávét?

       ’Will you go to the shop, and buy the coffee?’

                                  Natural speech                       Synthesized speech

2.4. Alternative questions

QA2         Az első vagy a második lehetőséget választod?

                 ’Do you choose the first or the second possibility?’

                                  Natural speech                       Synthesized speech

3. Imperative sentences

I1             Írja meg a levelet!  

                 Write the letter!’

                                  Natural speech                       Synthesized speech

I4             Csak a külföldi partnernek írja meg a levelet!

       ’Only to the foreign partner write the letter!’

                                  Natural speech                       Synthesized speech

I3             A megígért levelet írja meg a külföldi partnernek!

                 ‘The promissed letter write to the foreign partner!’

                                  Natural speech                       Synthesized speech

IC5           Csinálj valamit, hogy javuljon a helyzet!

       ‘Do something to make the situation better!’

                                  Natural speech                       Synthesized speech

IC1           Menj el az üzletbe és vedd meg a kávét!

       ‘Go to the shop and buy the coffee!’

                                  Natural speech                       Synthesized speech

4. Optative sentences

O1            ‘Bárcsak eljönne a barátom!’

                 ‘I wish my friend would come!’

                                  Natural speech                       Synthesized speech

5. Exclamative sentences

E1            Milyen gyönyörű!

                 ‘How beautiful!’

                                  Natural speech                       Synthesized speech

6. Short text

Holnap a barátnőmnek születésnapja lesz. Eddig nem volt időm, hogy ezzel foglalkozzam.

‘My friend will have birthday tomorrow. I didn’t have time until now to deal with this.’

Mit vegyek neki? Könyvet, bizsut vagy valami mulatságos dolgot?

‘What have I buy for her? A book, bijou or some amusing thing?’

Lássuk csak! A szerelmes regényeket és a krimit nem szereti. Keressek valamit, ami sokáig megmarad?

‘Let’s see! She doesn’t like the love stories and thrillers. Should I look for something what remains for a long time?’

A konyhai eszközök hasznosak, de a munkára emlékeztetnek. Bárcsak eszembe jutna valami jó!

‘The kitchen utensils are useful, but they remind us of working. If only I could think of something interesting!’

Tavaly egy naplót ajándékoztam neki, amelyben már sok érdekes bejegyzés van.

‘Last year, I gave her a diary, which contains already many interesting notes.’

— Tanácsolj valamit! Neked sincs jó ötleted?

     ‘Advise me! Even you don’t have a good idea?’

— Parfümöt vegyél neki! Tudod, a múltkor annyira el volt ragadtatva a Chanel illatától.

     ‘Buy her some perfume! You know, last time, she was delighted with the perfume of Chanel.’

Ha időm lenne, akkor körülnéznék a városban. Most elmegyek a közeli üzletközpontba és választok valamit.

‘If I had time, I would look around in the city. I go now the shopping center near to us, and shall choose something.’

                                  Natural speech                       Synthesized speech

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piątek, 26 września 2008

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