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Summary:
In StreamWriter basic usage tutorial, matplotlib is used to generate raster images of waveforms, and the figure used is left unshown in the resulting tutorial with the use of ``sphinx_gallery_defer_figures`` command.

It turned out that this figure is shown in the next code block executed by Sphinx Gallery, and the figure is placed in totally unrelated place. https://pytorch.org/audio/main/tutorials/audio_feature_extractions_tutorial.html

<img width="951" alt="Screen Shot 2022-10-14 at 10 06 58 PM" src="https://user-images.githubusercontent.com/855818/195855124-ecd9be49-5085-4acd-9a93-608d9d1ee9ce.png">

This commit fixes it by closing the figure.

Pull Request resolved: https://github.com/pytorch/audio/pull/2771

Reviewed By: nateanl

Differential Revision: D40382076

Pulled By: mthrok

fbshipit-source-id: 015f2bab8492d3b4fbe70e1174c7776a5aa2679a

Summary:
Adding and updating author information.

Pull Request resolved: https://github.com/pytorch/audio/pull/2764

Reviewed By: carolineechen

Differential Revision: D40332427

Pulled By: mthrok

fbshipit-source-id: 4f04c7351386c122e3b0a45c2ed1757a04b7dc9a

Summary:
Specifying multiple object in `:minigallery:` directive shows duplicated tutorials.

This commit fixes it by listing tutorials based on module used.

https://output.circle-artifacts.com/output/job/c3da2a22-40d5-4e2d-b73a-28b39e712817/artifacts/0/docs/io.html

Before:
<img width="694" alt="Screen Shot 2022-10-07 at 7 04 35 AM" src="https://user-images.githubusercontent.com/855818/194427092-ca1202e7-0731-4c18-b48b-24923d692a4a.png">

After:

<img width="648" alt="Screen Shot 2022-10-07 at 7 03 14 AM" src="https://user-images.githubusercontent.com/855818/194426950-5b780458-2bf0-43ef-b020-fcbbfdf8d41b.png">

Pull Request resolved: https://github.com/pytorch/audio/pull/2736

Reviewed By: carolineechen

Differential Revision: D40160247

Pulled By: carolineechen

fbshipit-source-id: 547496f9b569ff7a4d70db97e90f3ea503344477

Summary:
Add a tutorial for basic usage of torchaudio.io.StreamWriter.

https://output.circle-artifacts.com/output/job/55d9a495-af7a-483c-84cb-de9a08cfd2f3/artifacts/0/docs/tutorials/streamwriter_basic_tutorial.html

Pull Request resolved: https://github.com/pytorch/audio/pull/2698

Reviewed By: carolineechen

Differential Revision: D40133007

Pulled By: carolineechen

fbshipit-source-id: 141f692c32343981bfb228357f21562ffe36f623