Hello Mariana Logvinenko ,
Thanks for reaching out on Microsoft Q&A.
Currently, Speech Studio doesn’t support direct uploads from Azure Blob Storage. However, you can use a public URL with a SAS token as a workaround to access your files.
For more flexible data integration, you can explore options like Azure Machine Learning or Azure Functions. This functionality might also become available in Azure AI Foundry in the future. Hope this helps!
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Thanks!