WorksheetsQuiz 2 on Noise-Cancelling Headphones(L3 공통영어1)
Total questions: 11
Worksheet time: 6mins
What is the technology used in noise-cancelling headphones?
Echo cancellation
Sound amplification
Constructive interference
Destructive interference
What do the microphones in noise-cancelling headphones do?
Play music
Pick up outside sounds
Increase volume
increase 증가시키다
Generate sound waves
*generate 발생시키다
If outside noise has a value of +1, what value does the circuitry generate?
1
+1
-1
0
Why is it difficult to entirely eliminate external noise with noise-cancelling technology?
It only works for predictable sounds
It is too expensive
It cannot process sounds quickly enough
It needs too much power
Which type of sounds are noise-cancelling headphones most effective against?
Soft sounds
Inconsistent sounds
일관되지 않은 소리
Predictable sounds
Loud sounds
What must the circuitry do to achieve full noise cancellation?
Use larger speakers
Increase the volume of music
Reduce the battery usage
Convert noise into digital data
How do noise-cancelling headphones transmit the opposite sound?
Instantly to the speakers
By using a remote control
Via analog signals
아날로그 신호를 통해(via)
Through Bluetooth
What is a limitation of noise-cancelling headphones mentioned in the text?
They are too heavy to wear
They cannot cancel out all types of noise
They only work with specific brands of music
They need constant charging
*constant 끊임없는
Which of the following is an example of a predictable sound?
Birds chirping
지저귐
People talking
Car engines
Music playing
What is the main benefit of noise-cancelling headphones?
Longer battery life
Wireless
Clear music without increasing volume
Cheaper than regular headphones
What does 'surroundings' mean in Korean?
(a)
