How can I create audio file that node.js google speech server can recognize??

[geoseong]

Hi.

I want to create client side page that hopefully can record their voice at any remote device(no Sarafi for mobile support on mobile : see Mozilla MediaRecorder API)

I created recorded audio file and run google speech command but google speech server response of Transcription is nothing.
I run command like node recognize.js sync ./resources/hello.raw -e LINEAR16 -r 16000

So I link my code of client side page and please see what's wrong.
I want to know what options work to 16000 sampleRateHertz and LINEAR16 Encoding in Javascript MediaRecorder API.

my code of client side page : https://gist.github.com/geoseong/d42c24a3bdae9c2bb0d30b7fe7ecbe0a

Thanks.

[fhinkel]

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