B4A Library [Chargeable] SpeechRecognizer Library

jalle007 · Mar 19, 2013

please tell us what languages are supported ?

mrodriguez · Sep 24, 2013

Hi, I need to use google voice recognition over rikomagic.
Rikomagic use android 4.1 but doesnt have the voice recognition software and can not install it from play store.

So my only way is to use the unofficial voice recognition api from google.
https://gist.github.com/alotaiba/1730160

The proccess is ver simplye:
I send a post to https://www.google.com/speech-api/v1/recognize with the recorded file (using audiorecorder b4a library), and the respose is an json with the text.

Question:
Are you using that for your SpeechRecognizer Library?
If not, are you using the android voice recognition software?

Thanks

mrodriguez · Oct 25, 2013

Works perfect!!!

Harris · Oct 25, 2013

mrodriguez said:
Works perfect!!!

Great! Do you have a code example?

This is my project:
User is "out in the field" without network coverage.
Since his hands are covered with bee wax and honey, he needs to make a notation of the conditions of the yard (voice recording without typing).
When he returns to network coverage, the file (voice recording) is processed (as you stated above) and the text record returned added to the DB.

Make Sense? Doable?

Thanks

mrodriguez · Oct 26, 2013

If you want to do it off-line, with a recorded file, you can buy a 3D usb audio and with a cable connect MIC to HEAD (back to back) and then play a file.
At the same time you recognize speech using Tomas Library (speechrecognizer)
3D audio usb:
Regards

mrodriguez · Oct 26, 2013

Harris said:
Great! Do you have a code example?

This is my project:
User is "out in the field" without network coverage.
Since his hands are covered with bee wax and honey, he needs to make a notation of the conditions of the yard (voice recording without typing).
When he returns to network coverage, the file (voice recording) is processed (as you stated above) and the text record returned added to the DB.

Make Sense? Doable?

Thanks

Next post my reply

Harris · Oct 26, 2013

I see...
I was hoping I could "feed" speech recognizer with a saved audio file and get text results.

Tomas, can this be accomplished?

Thanks

RichyK68 · Nov 10, 2013

What audio format do you record the voice in? I've been trying this technique but Google keeps telling me the format is not recognized.

mrodriguez said:
Hi, I need to use google voice recognition over rikomagic.
Rikomagic use android 4.1 but doesnt have the voice recognition software and can not install it from play store.

So my only way is to use the unofficial voice recognition api from google.
https://gist.github.com/alotaiba/1730160

The proccess is ver simplye:
I send a post to https://www.google.com/speech-api/v1/recognize with the recorded file (using audiorecorder b4a library), and the respose is an json with the text.

Question:
Are you using that for your SpeechRecognizer Library?
If not, are you using the android voice recognition software?

Thanks

RichyK68 · Nov 10, 2013

Sorry, the actual message I get back from the post is Content-Type media type is not audio

mrodriguez · Nov 19, 2013

Rick, Tomas ( XverhelstX ) sell the library and examples of the SpeechRecognizer api.
I can´t send you the SpeechRecognizer library because of the Tomas´s license.
Also it just cost 10 euros. Contact Tomas to buy it.
Regards

petr4ppc · Nov 28, 2013

Tomas, please, I am playing with your lib and I have recognized, that when I start STARTLISTENING for example 5 times in one minute, then I get Error=8

Then if I push again the button STARTLISTENING, the listening is not starting......I must close and reopen app or I must reinstall it

please for your advice

wimpie3 · Dec 5, 2013

How can we specify a language?

The Android docs suggest the following:

Code: Copy

    String languagePref = "de";//OR, whatever iso code...
    Intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, languagePref);
    Intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, languagePref); 
    Intent.putExtra(RecognizerIntent.EXTRA_ONLY_RETURN_LANGUAGE_PREFERENCE, languagePref);

But how do we do this in your library?

brelto85 · Dec 9, 2013

wimpie3 said:
How can we specify a language?

The Android docs suggest the following:

Code: Copy

String languagePref = "de";//OR, whatever iso code... Intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, languagePref); Intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, languagePref); Intent.putExtra(RecognizerIntent.EXTRA_ONLY_RETURN_LANGUAGE_PREFERENCE, languagePref);

But how do we do this in your library?

same question...

XverhelstX · Jan 19, 2014

Rick Harris said:
I just bought this library. It works very well. Regrettably only the default language is supported. However, XverhelstX has been very helpful by providing some source code to add other languages. I have asked him to include it in his library because it is not b4A code (it uses Google API code). I don't know yet whether I will be able to implement it in order to add other languages. The library also does not have any VU audio meter code. This is really a pity because intercepting "rms" events is extremely simple. To do so, modify the provided BAS file:

Code: Copy

'Rms has changed Sub SpeechRecognition_RmsChanged (rms AsFloat) Log("RMS: " & rms) CallSub2(Main, "ShowVU", rms) End Sub

And add a routine to main:

Code: Copy

Sub ShowVU(rms AsFloat) Dim VUlevel1 as Int VULevel1 = rms * 10 'etc.... End Sub

It is impossible to add every single detail to the SpeechRecognizer library because there can be many variable solutions.
However, it should be very easy to implement your own language, and other actions by using the RecognizerIntent constants which can be found here:
http://developer.android.com/reference/android/speech/RecognizerIntent.html

All you have to do is create your own B4A intent, set up the required parameters with the constants and pass it to the SpeechRecognizer instance. This has been supported from the start already. My apologies if it wasn't so clear for some users.

An example:

Code: Copy

Sub StartListening  
  Dim i AsIntent
  i.Initialize("android.speech.action.RECOGNIZE_SPEECH", "")
  i.PutExtra("android.speech.extra.LANGUAGE_MODEL", "free_form")
  i.PutExtra("calling_package", "your package name")
  i.PutExtra("android.speech.extra.MAX_RESULTS", 5)
  i.PutExtra("android.speech.extra.LANGUAGE", "en-US")
  sr.StartListening(sr.CreateRecognizeIntent2(i))
End Sub

About the VU meter, this is the task of the developer of the application to implement it, and not the library developer.
SpeechRecognizer raises the event so the developer can use it and implement their own features, like a VU meter, etc

I hope everything is clear now, and if there are still questions, feel free to pm me or ask on the topic.

Kind regards,
Tomas

brelto85 · Jan 20, 2014

The CreateRecognizeIntent2 method there isn't in SpeechRecognizer library
is a method that should be created by author or by us?
How to do this?

XverhelstX · Jan 21, 2014

brelto85 said:
The CreateRecognizeIntent2 method there isn't in SpeechRecognizer library
is a method that should be created by author or by us?
How to do this?

Hey,

Please send me an email and i'll send you the latest version.

Kind regards,
Tomas

brelto85 · Jan 21, 2014

sent at your gmail address

brelto85 · Jan 22, 2014

is possible to select a non-standard engine of voice recognition?

brelto85 · Jan 23, 2014

Rick Harris said:
Unfortunately I have ran into a problem with the speechrecognizer on a HTC smartphone. Some of my customers are starting to report this problem as well. The microphone is so sensitive that background noise is easily picked up. Regrettably the AGC (Automatic Gain Control) increases the microphone's sensitivity as soon as the user has finished speeking. The recognizer believes the increasing background noise to be speech and therefore the SpeechRecognition_EndOfSpeech event is fired too late or not even at all (the recogniser then times-out). This problem can be witnessed by following the SpeechRecognition_RMSchanged event that clearly shows the microphone volume in relation to the background noise (on a Nexus-7 everything is fine).
This problem does not occur while using B4A's default VoiceRecognizer (VR). How to solve this problem?
I was thinking of:
1. Finding a way to controle the AGC by software (but that is risky because it would be device-dependent).
2. Permanently reducing the microphone's sensitivity (ditto risky)
3. Activating a low-pass audiofilter (if possible) to reduce the pickup of noise.
4. Reducing the silence listening time with:
i.PutExtra("android.speech.extras.SPEECH_INPUT_COMPLETE_SILENCE_LENGTH_MILLIS",500)
However, so far this has been unsuccesfull because silence is not properly detected.
5. Finding out how Google has overcome this problem.

Any thoughts?

I've an HTC phone and since i implemented the CreateRecognizeIntent2 method i have the same behaviors
Is very important for me resolve this issue
I don't tried the SPEECH_INPUT_COMPLETE_SILENCE_LENGTH_MILLIS extra

I expect a reply from Tomas

B4A Library [Chargeable] SpeechRecognizer Library

jalle007

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Harris

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