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F5_0818_最後一次暑期補課

Computers

12th Grade

Used 1+ times

F5_0818_最後一次暑期補課
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列哪項不會影響未經壓縮的音頻檔案大小?

取樣頻率

取樣大小

取樣人員

聲道數量

2.

DROPDOWN QUESTION

1 min • 1 pt

​ (a)   指的的模擬音頻所使用的樣本數目,其單位是​ (b)   。而​ (c)   是用來記錄每個聲音樣本所佔的資訊容量,其單位是​ (d)  

取樣頻率
Hz
樣本大小
bits

3.

MATH RESPONSE QUESTION

2 mins • 1 pt

若一個長一分鐘,未經壓縮的立體聲檔案的取樣頻率為44.1kHz,樣本大小為16位元,其音頻檔案大小是多少(以MB為單位)。

10.0910.09

Mathematical Equivalence

ON

4.

MATH RESPONSE QUESTION

2 mins • 1 pt

若長度為3分鐘的歌曲的數元率是128kbps,其檔案大小是:(以MB為單位)

2.752.75

Mathematical Equivalence

OFF

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下哪項不屬於經壓縮音頻檔案格式?

MIDI

MP3

RA

AAC

6.

OPEN ENDED QUESTION

3 mins • 1 pt

哈地想用喜歡的動漫歌作流動電話鈴聲,他可建立WAV檔案或MIDI檔案。運用一個技術層面來比較WAV和MIDI檔案。

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OFF

7.

OPEN ENDED QUESTION

3 mins • 1 pt

美美從互聯網下載音頻檔案,她希望檔案未下載完畢也可以即時收聽。舉出一種可用的音頻技術以及一款其檔案格式。

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