how to synthesize audio in iPhone - iphone

I need to synthesize a voice so that it can be used to speak the text that is supplied to it. how can it be done in iPhone. I went through Sphinx voice synthesizer and other voice synthesizers, but they have some predefined voice for converting text to speech. In my app I require the voice provided by me to respond back.
Any suggestions in this regarding where to start with, is very helpful.
Thanks in advance.

I am looking for the same thing. It looks that apple doesn't provide any library for that, despite the fact the iPhone uses for speech during auto-text. The only way I have found till now is using 3rd party http://www.ispeech.org/developers/iphone. I havent tested yet.

Related

How to recognize the human voice by code in iphone?

I want to integrate voice detection in my iPhone app. The iPhone app allow the user to search the word by using their voice. But, i don't know a single info about Voice Recognition in iPhone. Can you please suggest me any ideas,tutorials or sample code for this?
You can also use Google Chrome API to integrate voice recognition on your application, but there is a big problem : the API works only with FLAC encoded files, but this encoding isn't supported natively on iOS... :/
You can see those 2 links for more information :
http://www.albertopasca.it/whiletrue/2011/09/objective-c-use-google-speech-iphone/
http://8byte8.com/blog/2012/07/voice-recognition-ios/
EDIT :
I realized an application including voice recognition using Nuance SDK, but it's not free to use. You can register for free and get a developer key that allows you to test your application for 90-days. An application example is included, you can see the code, it's very easy to implement.
Good luck :)
The best approach will probably be to:
Record the voice on the phone
Send the recording to a server that runs the speech recognition software
Then return something to the phone to indicate what it should do
This approach is favorable as there are a number of open source voice to text softwares out there & you are not limited by computing power in the backend.
Having said that, iOS has OpenEars which is based on Pocket Sphinx. It looks promising...
Well voice recognition is not correlated with iphone. All you can do is record the voice in iphone. Once done, you can either code your one voice recognition module, or find a third party API and reuse it.
You can do google search on that.

How to convert a voice recorded by AVAudioRecorder into Text in objective-c?

I am working on a project where I have to record a voice covert into text then match the pattern and according to the user command perform action.
I am able to to record voice of the user through AVAudioRecorder and perform action. But the actions are perform on anything what user says. I want to perform on user's particular word like if he say play then playing should start.
Help me by any tutorial or any sample code.
Thanks in Advance
Most apps (including Siri) send the sound file to a remote data center via to do the speech recognition, which involves some fairly heavy duty processing. Nuance may have an commercial API.
Another option might be to try using the CMU OpenEars or PocketSphinx speech library, which has been ported to the iPhone. Also look at VocalKit and this article on running PocketSphinx on the iPhone.

voice changer, how is made?

I'm looking to implement a voice changer into my iPhone app. Something a bit like Talking Friends. I have 5 different voice styles.
anyone can give a hint
any info much appreciated
thx.
Unfortunately there is no UIDarthVaderify() object. There's an open source project called Skype Voice Changer, it's in C# so you obviously can't use it directly in a Cocoa Touch project but you can learn how voice changing works. Essentially you're looking to change the frequency distribution of the output signal without changing the envelope that represents the phonemes being made by the speaker.

Adding recorded voice recognition iPhone

In my program I have some recorded voice. After that I need to recognition it, for example: I launched program, saying something, and when program received word that have been recorded it shows UIAlertView. Anybody knows any sdk or example code? Thanks..
Hope the below link will helpful for you. They will also provide sample app for recognizing sounds. Download it and try it.
Ispeech SDK
Please note that ispeech does not perform natural voice recognition and the advertising materials are very misleading. The voice recognition piece of iSpeech requires a set vocabulary similar to the open source (and free) OpenEars SDK.
Nuance recently updated their developer program to give mobile developers limited free access to their speech recognition servers. Look at http://dragonmobile.nuancemobiledeveloper.com/public/index.php
If you don't want to use network to transfer audio, try OpenEars, the library for embedded speech recognition on IPhone
http://www.politepix.com/openears

How to convert speech to text in iphone?

I want to build an application where user when talks something on iphone it will convert into corresponding text.
I heard in windows platform it is possible.
Wheather this is possible in iphone ? Any API available for this ?
I used Nuanceā€™s Dragon Speech SDK for this purpose.
Its free for developers and their SDK have a sample project for STT and TTS both.
Tried Speech to text using this SDK on iOS 9 and it works like a charm.
Here is the link.
https://developer.nuance.com/public/Help/DragonMobileSDKReference_iOS/SpeechKit_Guide/RecognizingSpeech.html
Limitations:
60 seconds recording time limit.
Recorded audio file is not accessible.
Pauses taken are detected as end of recording.
There's an app for that.
Search for "Dragon Speech".
The question has been asked a lot of times here already, this being one of these questions that received quite a few answers and good ideas.
There is no API for doing speech to text on the iPhone, but you can record the voice on the phone, send the recording to a server that runs the speech recognition software on Windows or whatever OS suits you best, then return the text results back to the phone.
It is possible on the iPhone. Pocketsphinx has been ported. For example, an app called cactus dialer uses pocketsphinx. No API has been published but its not hard to get it built. Many people have.
For full blown dictation it will be hard. You will need to make it server based like Nuance's 'dragon speech' does or accept a smaller vocabulary.