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Google Cloud Speech API Go example

Authentication

  • Create a project with the Google Cloud Console, and enable the Speech API.

  • From the Cloud Console, create a service account, download its json credentials file, then set the GOOGLE_APPLICATION_CREDENTIALS environment variable:

    export GOOGLE_APPLICATION_CREDENTIALS=/path/to/your-project-credentials.json

Run the sample

Before running any example you must first install the Speech API client:

go get -u cloud.google.com/go/speech/apiv1

To run the example with a local file:

go build
cat ../testdata/audio.raw | livecaption

Alternatively, gst-launch can be used to capture audio from the mic:

gst-launch-1.0 -v pulsesrc ! audioconvert ! audioresample ! audio/x-raw,channels=1,rate=16000 ! filesink location=/dev/stdout | livecaption