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I'm trying to use the Google Speech API v2 (at address https://www.google.com/speech-api/v2/recognize?...)

I need to use my Api Key, but when I use it I get error 403 Forbidden

When I use an API key that was on the example project I downloaded it is working fine.

I saw that at the Google Developers Console I can enable a lot of api options, but didn't find any Speech-API option. Is there anything else I need to enable to get access to this API using my key?

Thank you!

Ron Gross
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5 Answers5

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Instructions are here : http://www.chromium.org/developers/how-tos/api-keys

!! Do not forget to activate the API "Speech API" in "APIs" under "APIS & AUTH" !!

aurelihein
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According to chromium that there is no quota for google speech to text APIs anymore.so you will not found it in your google cloud project console

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Ahmed Gamal
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I am not sure this API is available to everyone, but here is a github project that provides a valid key. You should try with this key.

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

David
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This is an old post, but hopefully it will help someone. I couldn't find the Speech API listed under the popular APIs on https://console.developers.google.com/ either. You have to search for the Speech API using the "Search all 100 + APIs" search field.

nschildre
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    Not showing in the "Search all 100 + APIs" search either (or at least not if you aren't subscribed - which is the point of step 1 explicitly mentioned in the accepted response). – Dan Cornilescu Apr 25 '16 at 15:24
  • @DanCornilescu - I don't know what's wrong with your search. I'm not subscribed to any list, but when I go to the google dev console, click "enable APIs" and put "speech" in the search box, I get a link "Google Cloud Speech API". Seems to work fine for me. – Jules Nov 28 '16 at 01:30
  • @Jules I can see it now as well, it seems things changed in the past 7 months or so. – Dan Cornilescu Nov 28 '16 at 03:08
  • @DanCornilescu AFAICT, it was added to that list some time around the end of march, or maybe very early april... if you leave browsers open for a while, perhaps you had a cached version? – Jules Nov 28 '16 at 03:40
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In order to use the service you need to:

  • get a developer key (see above answers for instructions)
  • send a mono flac audio file to http://www.google.com/speech-api/v2/recognize (Google doesn't accept stereo audio anymore)
  • specify your audio file's sampling rate (e.g. 16000, 44100, etc.) and Content-Type as audio/x-flac in your HTTP header
  • specify values for key, client and lang parameters in the url

Here is a wget example with full parameters and header:

wget -q --post-file file.flac --header="Content-Type: audio/x-flac; rate=16000" -O - "http://www.google.com/speech-api/v2/recognize?client=chromium&lang=en_US&key=AIzaSyAcalCzUvPmmJ7CZBFOEWx2Z1ZSn4Vs1gg"

Note that the free service is limited to 50 requests/day for a developer key.

This repository offers a shell script to use the API from the command line (including voice recording).

MaS
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