I am a physics student so forgive me if I'm not very precise with the language. I am currently taking an English course, and my teacher is specialized in teaching pronunciation. I am interested in checking if the students are objectively improving. I am interested in the vowels:
æ, ɑ, ʌ, ə, a
because as a Spanish speaker, they all sound very similar. I decided to create a sort of voice-recognition tool (actually it would be vowel-recognition). For this I am using the soundwave of those vowels pronounced by English people. I found this Oxford Corpus with many hours recorded. Here the speakers read some paragraphs.
The problem is that I would spend many hours trimming the audio files in order to extract just the part in which they say the specific vowels I need. I want to ask if any of you knows another Corpus just with vowels, as that would ease my work.
I appreciate your help.