Hello,
Yes, baslp require physics and mathematics to make the course a complete package of knowledge.
Baslp is a 4 year undergraduate course including various subjects that need a proper participation of physics and mathematics. Subjects covered in baslp are listed below :
Audiology and auditory tests

Speech-Language Development & Disorders

Clinical Practicum: a) Speech-Language Pathology b) Audiology

Articulation & Phonological Disorders

Maxillofacial Anomalies

Diagnostic Audiology

Rehabilitative Audiology

Voice & Laryngectomy

Paediatric Audiology

Motor Speech Disorders in Adults

Noise Measurements & Hearing Conservation

So, some of these subjects have a high demand for physics and mathematics.
I hope this would help you. For further queries please feel free to write me down in the comment box.