Google API/Deepspeech for speech to text

[svp19]

Create a speech-to-text view in admin/views.py, which takes an audio file through post request and displays text transcript on the screen.

You may also create a view to render a form to upload file and redirect to this view for testing.

Although, in the spirit of open source -we must use open source projects like DeepSpeech in ours - you may try implementing Google's speech to text api which is simple( and works well enough with Indian accents). We shall later have to migrate to something more open source