This exercise will allow to you transcribe lectures quickly and comfortably.
To get your mind accustomed to acknowledging words in a brief but intelligible style, practice listening to a speech or lecture and write down your notes without using any vowels -- only consonants.
For example: This technique allows you to recognize and write your words down in half the time.
Becomes: Ths tchnq llws y t rcgnz nd wrt yr wrds dwn n hlf th tm.
To make this exercise easier in the beginning, listen to a radio or TV newscaster and write down what he says while eliminating only one vowel, then make it 2 vowels, then 3 and so on until you can write down every word with all vowels omitted.