Azure Text to Speech API: only mono output formats (no stereo formats) available?

Question

I've been developing a Text-to-Speech app with Azure SDK and according to reference page below

https://learn.microsoft.com/en-us/dotnet/api/microsoft.cognitiveservices.speech.speechsynthesisoutputformat?view=azure-dotnet

there seems to be only mono output formats available and it is not possible to create audio files in stereo format, correct? If there's anyone familiar with this, please help me out with your answer.

Thank you in advance for your help.

Answer 1

As per Azure cognitive services base documentation there are nearly 20 different types of audio output types, we can get using Azure SDK using REST API.

All those outputs are mono type only. Not stereo type.

By default, azure SDK using REST API is providing mono format of audio. That is single channel output.

Answer 2

Yes, only mono formats are supported as for now (Feb, 2022) by Azure TTS. I suggest you to use sox to convert the audio file from mono to stereo.