Terms in Hidden Tone

, . , : : : . , , . , This research tackles the non-clean error. that appeared in the fourth century after Hijra .This term was used to refer to some a kind of linguist errors that are related to the correct pronoun cities of sound and their full linguistic realization in speech . The term was introduced by Al- Tajweed linguists when they divided the error into two parts : the clear and the non-clear . The first refers to the errors in relation to the parsing . As for the second , it is related to the error in relation to the sounds when they are not pronounced properly . The non-clear error is so called since only the specialists ,viz . the reading linguists , realize it when made by speakers . It was the basis on which the phonological studies started with Al-tajweed linguists . As a result , its realization were their fields in contrast to the second, viz . the clear error , when it was the field of linguists .