can i recognize only vocal letters?

This topic has 2 voices, contains 4 replies, and was last updated by sefiroths 264 days ago.

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August 26, 2011 at 3:07 pm #7542
sefiroths	i’d like to start programming an app for iphone, but first, before starting managing and learning openEars i’m wondering if i can recognize not all speach, but only vocal letters… what i’d like to do is recognize if the speaker says: “aaaaaaaaaaaaaaaaaaaa” or “eeeeeeeeeeeeeeeeeee” ecc… can i use openEars for this? or do i have to use FFT? using oscilloscope app from apple a letter “e” seems equal to “a” do anyone knows how to recognize letters? thanks
August 26, 2011 at 3:51 pm #7546
Halle	Technically you can use OpenEars for this but the results will be disappointing. Probability in speech recognition is estimated on the basis of transitions between phone states. A single isolated sound doesn’t provide much information there. Practically you can do this by putting “EE” in your model and “EE IY” in your phonetic dictionary, but once you add a few of them you will see that the accuracy of recognition isn’t so great.
August 26, 2011 at 4:46 pm #7547
sefiroths	thanks, do you think that could be another way even without openEars? or should i drop this project? thanks This reply was modified 266 days ago by sefiroths.
August 26, 2011 at 4:50 pm #7549
Halle	This is a good thread to read to see some diverse opinions on your goal: http://stackoverflow.com/questions/6387062/ios-c-algorithm-to-detect-phonemes You are probably not trying to recognize as many phonemes as the poster there, but essentially what you are talking about is phoneme recognition.
August 28, 2011 at 7:10 pm #7550
sefiroths	thanks i have read the post, but seems no solution yet. thanks however it was interesting

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