I am afraid the organizers cannot provide any visas. You will need to apply for one in your country.
Posted by: vgg @ Aug. 15, 2019, 8:21 a.m.Thank you for your reply.
Would you send us some documents like invitation if we got top five after the challenge ends? Because all members in our team are students, it's really hard to apply visa to Austria for us.
Posted by: zzzccc666 @ Aug. 15, 2019, 9:16 a.m.If you are attending INTERSPEECH 2019, then please contact the organizers of INTERSPEECH. There is an e-mail contact for Visa Letters at https://interspeech2019.org/contact/contact/ .
If you are just attending our Workshop, we can write an invitation letter in early September, once the competition is finished and we have the official results.
If this is too late for you to apply for a visa in your country, are you are invited to give a presentation at the Workshop, then you can always make your presentation remotely (via Skype or a different tool).