Complex sentence: More importantly, the TIMIT task concerns phone-sequence recognition, which, unlike word-sequence recognition, allows very weak "language models" and thus the weaknesses in acoustic modeling aspects of speech recognition can be more easily analyzed.
Split into simpler sentences: More importantly, the TIMIT task concerns phone-sequence recognition, which, unlike word-sequence recognition, allows very weak "language models". This allows the weaknesses in acoustic modeling aspects of speech recognition to be more easily analyzed.