var speech = require('@google-cloud/speech')({
                                    projectId: 'xxxxxxxx',
                                    keyFilename: 'xxxxxxx'
                                });
                                speech.recognize(file, {
                                    encoding: 'FLAC',
                                    sampleRate: 44100
                                }, function(err, transcript) {
                                    if(err) {
                                        throw err;
                                    });