Highlights this search light on the study of sound in the book Sibawayh according curricula modern linguistics , turned out to us that Sibawayh realized the importance of the audio system , and was fully aware that the study sounds introduction is a
must to study the language , and also shows that he has dealt with the description ( sound operative ) , Between numbering , and select audio and accompanying movements of the members of the pronunciation.
The department Sibawayh Arab voices depending on the pronunciation control outside air from the mouth to the voices of ( silent ) and sounds ( tide and soft ) .
Then we studied the symmetry voice in the book Sibawayh ( symmetry between the consonants : symmetry next , and substitution ) , and ( symmetry full - slurring - diphthong doubled , diphthong Close together ) , and ( symmetry next , symmetry mastermind ) , and ( symmetry voice and tilt ) , and ( symmetry voice and followers).And studied voice offset in the book Sibawayh : ( offset voice and semantics ) , and ( offset voice and deletions ) , and ( offset voice and mitigation)
