example.js

const axios = require('axios');

module.exports = function(context, blob, outputBlob) {
  context.log(blob);
    axios.post(
      'https://speech.platform.bing.com/speech/recognition/interactive/cognitiveservices/v1?language=pt-BR&format=detailed',
      blob,
      {
        headers: {
          'Ocp-Apim-Subscription-Key': process.env.API_KEY,
          'Content-Type': 'audio/wav; codec=audio/pcm; samplerate=16000'
        }
      },
      (error, response) => {
        if (error) {
          context.log(error);
        }

        context.log(JSON.stringify(response.data, null, 2));
      }
    );
  context.done();
}