Simplify the following text for a Grade 11 native English-speaking person.
Original: Although the study of vocal range has little practical application in terms of speech , it is a topic of study within linguistics , phonetics , and speech and language pathology , particularly in relation to the study of tonal languages and certain types of vocal disorders .
Simplified: Although the study of vocal range is not used in terms of speech , it is a topic of study within linguistics , phonetics , and speech and language pathology .