computer speech analysis

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Dear Sirs

i am looking for program or a source code of computer speech analysis for pronunciation therapy , (based on speech verification feedback) ,what i mean a program to analyse the recorded voice of letter and identify the spoken letter and print a feed back of the recorded letter (just to identify the letter)

please i am in urgent need of your help

thanks

Posted 11-Mar-13 9:58am

hotloveshake

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ZurdoDev 11-Mar-13 16:08pm

what does google have to say about this? I don't think anyone is going to give you source code in a hurry. Have you done anything yet?

hotloveshake 11-Mar-13 16:31pm

ok , if i have already a recorded sounds of English alphabet such as A B C ... etc , how i can make a form that record my voice and recognize if i said A , Or B , or C ...... etc ,voice and alphabet feedback of the spoken letter !

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Dave Kreskowiak · Answer 1 · 2013-03-11T10:18:00

Solution 1

The chances of anyone here just handing over such code are 0.

What you ask is extremely complex and is probably only going to be found in very expensive off-the-shelf products (such as RosettaStone)RosettaStone[^] where those algorithms are very proprietary and very closely guarded secrets.

You can TRY open source libraries, but the level of success you get, it any at all, depends entirely on your very specific requirements and the capabilities of the libraries you test.

You can get a start by looking at this[^].

Posted 11-Mar-13 10:18am

Dave Kreskowiak

Comments

Sergey Alexandrovich Kryukov 11-Mar-13 16:21pm

Agree, my 5 (but such a radical estimate for probability remains on you; why not, say, 1.0E-8? :-)
—SA

Dave Kreskowiak 11-Mar-13 16:26pm

I was thinking closer to 1.0E-80. ;)

Sergey Alexandrovich Kryukov 11-Mar-13 16:53pm

Whatever. Probability underflow :-)
—SA

hotloveshake 11-Mar-13 16:42pm

ok , if i have already a recorded sounds of English alphabet such as A B C ... etc , how i can make a form that record my voice and recognize if i said A , Or B , or C ...... etc ,voice and alphabet feedback of the spoken letter

Sergey Alexandrovich Kryukov 11-Mar-13 16:57pm

This is all not enough, not even close. Two good pronunciations by people with different individual features of their voices will show very different records, but good and intentionally bad pronunciations by the same person may look very close. I know what you can do: you can become a scientist in several fields of sciences in related field and start a big research. And it won't be your "average" PhD, it will be something real and way more serious... Care to try? Don't forget to send me the copies of your work, in appreciation of this advice which is going to change all your life... :-)
—SA

hotloveshake 14-Mar-13 5:58am

ok ,thank you all of you for your help , but i have another thing , is there a code or a way that i can convert the wave form values from analog to digital in binary form ?!!!!
it will help me a lot , thanks

Dave Kreskowiak 11-Mar-13 18:31pm

What you now describe is Speech Recognition. That's built into the .NET Framework starting with version 3.0, I think. You can read more about it at http://msdn.microsoft.com/en-us/library/system.speech.recognition.aspx

If you're looking for anything beyond it's best guess at what you said, speech recognition won't help you.

hotloveshake 14-Mar-13 5:58am

ok ,thank you all of you for your help , but i have another thing , is there a code or a way that i can convert the wave form values from analog to digital in binary form ?!!!!
it will help me a lot , thanks

Dave Kreskowiak 14-Mar-13 7:26am

Ummm, the values are not analog. The values you see in the computer are always digital, so this question doesn't make any sense.

hotloveshake 14-Mar-13 7:58am

ok , can i make a recognition for one letter only ? if yes , how?

hotloveshake 14-Mar-13 8:04am

or how can i know the sound wave properties of the letter ?!

Dave Kreskowiak 14-Mar-13 8:16am

You don't. In speech recognition, you don't have access to the wave form data. The library wraps all that and keeps it away from you. The point of the library is that you are concerned about the letters and words that it is returning, not how it got them.

This is where you have to do a ton of research. Someone just giving you a code snippet is not going to help you much in understanding the complexities of speech recognition.