models.id is the GUID of acoustic model you want to use (can be baseline or customized).is the URL copied in the previous step (including all parameters).recordingsUrls is an array of strings (note the difference from standard batch transcription's recordingsUrl).is where your Speech API key is provisioned ( northeurope, westus etc.).When getting SAS for this container keep the Read and List permissions.īulk transcription falls under the batch API endpoint, with one small catch - use version 2.1 instead of 2.0! POST Where: I use Storage Explorer as an easy way to generate SAS (Shared Access Signature) URL for a container. The tool I'm using to manage Azure Storage is Storage Explorer.Ĭreate Azure Storage Account (or use an existing one). In my experiments I took several podcast episodes and just uploaded them to Storage as MP3s and one M4A. Thanks to the recent updates to the Speech service there's a high probability that you won't need to convert your audio files before uploading. You just have to upload your audio files to Azure Storage, generate SAS URL for the container, initiate transcription, wait and finally download results. The batch transcript API has been part of the Speech service for a long time. "PunctuationMode": "DictatedAndAutomatic",ĭetailed instructions follow. To perform bulk transcription, upload audio files to storage container, generate SAS URL and call: POST Ocp-Apim-Subscription-Key: The API is a little bit hidden, so this article describes how to work with it. Since Build 2019 the Azure Speech service supports bulk audio transcription for files stored in Azure Storage.
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