promotion image of download ymail app
Promoted
Jerry
Lv 7
Jerry asked in 娛樂與音樂廣播 · 1 decade ago

請問:AM廣播與FM廣播、何種穿透率較好啊???3Q

如題:請問:AM廣播與FM廣播、何種穿透率較好啊???3Q

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    FM是Frequency Modulation的縮寫,意思是「頻率的調變」(振幅不變.而頻率變化的調變波.就叫做調頻FM波)也就是「調頻」;AM是Amplitude Modulation的縮寫,意思是「振幅的調變」(頻率不變.振幅變化的被調變波.就叫做調幅AM波)也就是「調幅」.FM的頻率單位是 MHz(百萬赫茲);AM的單位只有kHz(千赫茲).所以FM的穿透率是比較好的!

    • Commenter avatarLogin to reply the answers
Still have questions? Get your answers by asking now.