Please check here, if you need a visa to enter the Spain.

  • Nationals of the EU, Switzerland, and EEA countries will not need a visa, and are free to work and conduct business in the Spain.
  • Nationals from some designated countries such as USA may travel for tourist or business purposes under a visa exemption. The link above will detail what documents you need to provide in order to travel under a visa exemption.
  • Other nationals will need a visa.

If you need a visa
A standard visitor visa will be sufficient for the large majority of conference speakers and attendees

http://www.exteriores.gob.es/Portal/en/ServiciosAlCiudadano/InformacionParaExtranjeros/Paginas/VisadosUniformeSchengen.aspx

IEEE ICASSP will provide you with a letter demonstrating the purpose of your visit, confirming that you are attending the conference during 4 – 9May, 2020 at the Barcelona, Spain. You are also advised to prepare a letter from your employer, confirming your job title and duties, and that you are attending IEEE ICASSP conference.