frequency modulation system

systems that modulate frequencies, often as an assistive technology

en-GB/ˈfɹiːkwənsɪ ˌmɒdjʊˈleɪʃən ˈsɪstəm/
en-US/ˈfɹikwənsi ˌmɑd͡ʒəˈleɪʃən ˈsɪstəm/

ক্যাটাগরি:

radio receiverhearing assistive technology