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- Next let's take a look

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at the additional import declarations

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that we see here in
lines seven through 11.

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Now as we did back in the
data mining Twitter lesson

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we used a keys.py file
to hide our credentials

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for interacting with the web
services in this example.

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So you'll see down below
whenever we need those keys

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we will refer to them as
keys. and a variable name

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that's defined in that file.

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So it is critical in
order to run this example

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that you modify that file
and insert your own API keys.

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Now separately we're
also going to be using

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the pyaudio module to
enable us to record audio

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from the microphone on our system

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and we're going to be
using the pydub module

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and it's sub-module pydub.playback
to load and play back

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the audio files that we
create in this example.

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And then finally we're
going to use the built-in

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python standard library module called wave

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and basically what this is
going to enable us to do

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is work with wave audio file formats.

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So wav is an audio file
format that was originally

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developed by Microsoft and
IBM a very long time ago

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and we'll be using that
format to store the files

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that we send off to Watson's
speech to text service

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for transcription purposes.