Google Voice Engine tests

The V2 API for google voice translation seems to be using the URL https://www.google.com/speech-api/v2/recognize

The output is having following characteristics 

output : json. xml not supported 

lang: any locale 

key: Developer should get the key from Developer console 

app : optional parameter . passing this returns some additional reruns values 

client : is an optional parameter again, normally application seems can use chorome as value. 

An Example can be given like this: 

First of all, we need to have a recording utility, and that can be obtained using the folioing few commands

Install SOX 

On OS X with homebreew installed, 

brew install sox 

Recording Audio

rec —encoding singed-integer —bits 16 —channels 1 —rate 16000 test.wav

Send the request

curl -X post —data-binary @“audio/hello.wav” —header ‘Content-Type:audio/l16;rate=16000;’ https://www.google.com/speech-api/v2/recognize?output=json&lag=en-us&key=

When google is 100% sure about the translation, the resonse is something like below 

{

   "result":[

      {

         "alternative":[

            {

               "transcript":"good morning Google how are you feeling today"

            }

         ],

         "final":true

      }

   ],

   "result_index":0

}

when google is unsure, the response will be something like below 

{

  "result":[

    {

      "alternative":[

        {

          "transcript":"this is a test",

          "confidence":0.97321892

        },

        {

          "transcript":"this is a test for"

        }

      ],

      "final":true

    }

  ],

  "result_index":0

}

References

https://github.com/gillesdemey/google-speech-v2