google voice recognition source code - android

as google said new android "jelly bean" will contain voice recognition engine able to work offline. As new android source code have been opened I tried to look at and find source for voice recognition engine but without success.
So my question: is voice recognition engine source code a part of android 4.1.1 source code? Or it's something like separate app?
Thanks in advance and sorry for my English.

It is actually a downloadable package in settings. No apps and such, just a simple engine that the os falls back on if there is no internet.
So no, it is not part of the source code nor is it a separate app.
Hope my understanding of it is clear and has helped you.

In Android 4.1 source you can see the speech engine source in srec_jni folder (C++ code) but there is some problem the header files are not located where it should be

The voice recognition software definitely lies inside the Jellybean OS since the app recognizes the voice commands such as "call" it also recognized the names in the contact, hence the source code must be inside the OS.
P.S: Try switching off your wifi and Mobile data and voice commanding "call" and it will work.

Related

Speech Language Recognition issues on Android

I'm currently working on an Android application using SpeechRecognizer provided by Google. However, this recognizer only uses the default language of the device, and not languages provided with RecognizerIntent.ADD_EXTRA_LANGUAGES :
speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.FRENCH);
speechRecognizerIntent.putExtra("android.speech.extra.EXTRA_ADDITIONAL_LANGUAGES",new String[]{"fr});
This code for example won't use French for recognition but will use english instead because it is the device's language. But I need it to work in French.
I know this issue has been already asked multiple times, but it was a pretty long time ago, and I would like to know if anyone know if this bug has been fixed since, or how to fix it? And if it has not been fixed yet, if anyone has any workaround/API/Service to create a voice language recognition application on Android?
Thank you for your help!
Huawei ML Kit may help with your issue.
Huawei provided Text to speech (TTS) can convert text information into audio output in real time.Rich timbres, and volume and speed options are supported to produce more natural sounds and supports French.
For Detail,pls kindly refer Docs.
You can also use the sample code to quickly understand the Android APIs provided by HUAWEI ML Kit and how to use the APIs. See ML Kit Android Sample Code.

Google speech to text api android

Android google speech to text SDK, the voice recording is controlled by SDK .
I need to make it manual button for start and stop voice recording for speech to text. for eg: while click a button for start the voice recognition , its continue to record the audio until click the stop button. but in android SDK , its automatically stop the recording and pass the recorded audio for processing.
I created an updated version of the Android sample application with Start and Stop, and posted it here:
https://github.com/Avilaaiops/SpeechRecognitionClient
It updates Gradle to 4.0.1, Kotlin to 1.3.72, and the Speech SDK to 1.24.0
This should help people looking for an up to date sample that isn't on the alpha SDK anymore.
As far as i know this is how its attended to work. There is no continuous speech recognition. To implement something like you requested, you need to use third party libraries like this or this one.
There is no official documentation on how to transcribe Audio from Streaming Input in Android yet but Java, C#, Go, Python and Node.JS. However there is a sample Android app for the API. You can use it as a starting point and convert the Java code into Android Native code.
Note: Even though Android uses Java but it is a different version which is designed to fit the Android architecture.
Using the approach I mentioned above requires extra effort, research skill as well as your Java and Android Fundamental Programming Skill. #thisisthehardway
The easier way will be applying external libraries like Droid Speech (As mentioned by #kAliert).
From the documentation of Droid Speech:
Droid Speech aims to close this gap and provide unparalleled
optimisation of continuous speech recognition without any of the above
said issues. It is developed keeping in mind all the loopholes which
needs to be blocked to have the speech recognition run seamlessly in
an android device.
This would be relative easy but it is made by third party as you have no full control on it.
Cheers!
For this i searched a lot, i didnt find any solution to implement Microsoft speech to text api. Finally i got the solution it worked for me , and hope i will work for you or it can help somebody who is searching. I am just mentioning the git repository link, Pickup the MainActivity.java,gradle(aap and project level) , layout xml and put in your project. Execute and enjoy the solution.
Git repository link is: MircoSoftSpeechToText

How to make a voice assistant android apk offline?

I want to make an android project that can understand my voice command and can response with voice.So, are there some api or frameworks? If not, how do I analyse and translate that voice?
Stack Overflow is probably not the right place to ask for an advice, but let me answer you. CMUSphinx is probably the most popular free speach recognition library, working offline. I haven't used it, but I hope it's going to help you. Then you need also text-to-speach library working offline, so take a look at this catalog - https://android-arsenal.com/tag/100 . If you don't find a library, you can have the code of an open source project like Android Mary TTS and reuse whatever is necessary.

How to Install HTK on Android?

Similar to this question. Since I don't want to pass the voice data to a server, doing this may cost me more time. I wonder if I can use HTK to recognize the voice data locally with the Android application so that I won't need to pass that audio to the server.
Here may be the solution, but can anyone give me a more detialed tutorial on how to build HTK with android ndk? Thank you!
Maybe pocketsphinx is more suitable for you, see this tutorial: http://cmusphinx.sourceforge.net/wiki/tutorialandroid . And to build the JNI API from pocketsphinx yourself, see Building PocketSphinxAndroidDemo (from CMUSphinx project) for more details.

Easy looking at Android source code without downloading full code

I want to modify say MediaRecorder class for example. And I want to show at full source code of it.
Where can I get source code of standard classes?
See http://source.android.com/
Here [at the link above] you can find the information and source code you need to build an Android-compatible device.
Android is an open-source software stack for mobile devices, and a corresponding open-source project led by Google. We created Android in response to our own experiences launching mobile apps. We wanted to make sure that there was no central point of failure, so that no industry player can restrict or control the innovations of any other. That's why we created Android, and made its source code open.
Easy looking at code without downloading full Android source code

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