I am working on a speech recognition system and to begin with I need all phonemes of English in audio format by which I will be able to compare with my speech fragments.

  • 3
    Welcome to the site. You might want to show some research effort first, it'll increase the chances that others are willing to help you ;)
    – robert
    Aug 7 '15 at 19:07

There is no such thing. What can be recorded (i.e. what occurs in speech) is an allophone, and phonemes are abstractions built from allophones. Every allophone occurs in a particular context, so the acoustic value of /k/ in "keep" is different from the value of /k/ in "cool". Allophones also do not have well-defined acoustic beginning and ending points; for example the acoustic properties of [t] in "bat" extend backwards into the vowel [æ] so that one can (somewhat) identify "bat" as distinct from "bad" before reaching the consonant [t]/[d].

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