amplitude modulation

IPA/ˈæm.plɪ.tjuːd mɒd.jəˌleɪ.ʃən/
IPA/ˈæm.plə.tuːd mɑː.dʒəˌleɪ.ʃən/

amplitude modulation — 名詞

1. a method of radio transmission where the strength of a carrier wave is varied to

1.名詞C1
釋義

調幅

改變載波振幅以傳送聲音或資料的無線電技術

a method of radio transmission where the strength of a carrier wave is varied to carry sound or data

例句

Liam's grandfather still tunes in to amplitude modulation radio every morning before breakfast.

Liam 的祖父每天早餐前都會收聽調幅廣播。

collocation: tune in to + amplitude modulation radio

The coastal weather station broadcasts storm alerts using amplitude modulation around the clock.

沿海氣象站全天使用調幅播送暴風警報。

using + amplitude modulation for the means of transmission

同義詞
  • AM

    the standard abbreviation, used far more often than the full term in everyday speech and on radio dials

反義詞
  • frequency modulation

    a radio technology that varies the frequency of the carrier wave instead of its strength, producing clearer sound with less interference

文法句型

amplitude modulation + noun

via/using + amplitude modulation

in + amplitude modulation

用法筆記

Almost always shortened to AM in everyday use. Amplitude modulation is more likely to pick up electrical noise (from lightning, power lines, or machinery) than frequency modulation (FM), which is why FM became the standard for music. AM remains common for talk radio and news because its signals travel farther, especially after dark.

常見錯誤

❌I choose AM radio stations because the sound is clearer.
✅I choose FM radio stations because the sound is clearer.
💡FM (frequency modulation) produces cleaner audio; AM is more vulnerable to static and interference.