Update README.md

README.md

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 license: cc-by-sa-3.0
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+TTS slovenian dataset, contains 40 hours of studio recording of a single speaker.
+
+created from:
+
 Verdonik, Darinka; et al., 2023, 
   ASR database ARTUR 1.0 (audio), Slovenian language resource repository CLARIN.SI, ISSN 2820-4042, 
   http://hdl.handle.net/11356/1776.
+
+- only studio recordings of speaker G0911
+- recordings without transcriptions were removed
+- metadata.txt contains the transcriptions
+- some special characters were removed from transcriptions, the final alphabet is: !",.:?@abcdefghijklmnopqrstuvwxzčđšž (and uppercase)