Audio Processing – MCQs — Multimedia System MCQs

1. What is the process of converting analog audio signals into digital format called?
(A) Modulation
(B) Quantization
(C) Sampling
(D) Compression

2. Which parameter determines the number of audio samples taken per second?
(A) Bit depth
(B) Sampling rate
(C) Frequency range
(D) Dynamic range

3. What is the typical sampling rate for audio CDs?
(A) 22.05 kHz
(B) 44.1 kHz
(C) 48 kHz
(D) 96 kHz

4. Which unit is used to measure sound intensity?
(A) Hertz
(B) Decibel
(C) Watt
(D) Bit

5. What is the process of reducing the size of an audio file without removing information called?
(A) Lossy compression
(B) Lossless compression
(C) Encoding
(D) Quantization

6. Which audio format uses lossy compression?
(A) WAV
(B) MP3
(C) FLAC
(D) AIFF

7. Which audio format is commonly used for high-quality, uncompressed audio?
(A) MP3
(B) AAC
(C) WAV
(D) OGG

8. What does the term “bit depth” in audio represent?
(A) Number of channels
(B) Number of samples per second
(C) Number of bits used to represent each sample
(D) Loudness level

9. Which type of microphone is commonly used for studio recordings?
(A) Dynamic microphone
(B) Condenser microphone
(C) Ribbon microphone
(D) Lavalier microphone

10. Which process removes unwanted noise from an audio recording?
(A) Amplification
(B) Filtering
(C) Modulation
(D) Sampling

11. Which frequency range is considered the average human hearing range?
(A) 10 Hz – 10 kHz
(B) 20 Hz – 20 kHz
(C) 50 Hz – 15 kHz
(D) 100 Hz – 30 kHz

12. Which audio processing effect makes a voice sound like it is in a large hall?
(A) Echo
(B) Chorus
(C) Reverb
(D) Distortion

13. Which device converts sound waves into electrical signals?
(A) Speaker
(B) Amplifier
(C) Microphone
(D) Mixer

14. What is the primary purpose of an audio equalizer?
(A) Increase loudness
(B) Adjust frequency balance
(C) Reduce distortion
(D) Remove silence

15. Which process increases the amplitude of an audio signal?
(A) Filtering
(B) Compression
(C) Amplification
(D) Sampling

16. Which audio file format is developed by Apple for high-quality audio?
(A) MP3
(B) AAC
(C) FLAC
(D) OGG

17. Which device is used to mix multiple audio signals together?
(A) Mixer
(B) Amplifier
(C) Equalizer
(D) Filter

18. What does “MIDI” stand for in audio technology?
(A) Musical Instrument Data Interface
(B) Musical Interface for Digital Instruments
(C) Musical Instrument Digital Interface
(D) Music Input Device Interface

19. Which audio effect duplicates a sound slightly delayed to create a fuller sound?
(A) Echo
(B) Reverb
(C) Chorus
(D) Distortion

20. Which term describes the softest and loudest sounds an audio system can reproduce?
(A) Frequency range
(B) Dynamic range
(C) Bit depth
(D) Gain

21. Which software is widely used for audio editing and is free?
(A) Audacity
(B) Pro Tools
(C) Logic Pro
(D) FL Studio

22. Which audio processing step reduces differences between loud and soft sounds?
(A) Compression
(B) Equalization
(C) Distortion
(D) Filtering

23. What is the main advantage of stereo sound over mono sound?
(A) Better frequency range
(B) Louder output
(C) Sense of direction and space
(D) Higher sampling rate

24. Which process removes frequencies above a certain cutoff point?
(A) Low-pass filtering
(B) High-pass filtering
(C) Band-pass filtering
(D) Notch filtering

25. Which term refers to the rate at which audio data is transmitted?
(A) Bit rate
(B) Sampling rate
(C) Frequency rate
(D) Data depth

26. Which audio effect alters the pitch of a sound without changing its duration?
(A) Time stretching
(B) Pitch shifting
(C) Equalization
(D) Modulation

27. Which microphone type is ideal for capturing sound from a single direction?
(A) Omnidirectional
(B) Cardioid
(C) Bidirectional
(D) Shotgun

28. Which process in audio production blends different tracks into a final output?
(A) Mixing
(B) Mastering
(C) Recording
(D) Encoding

29. Which audio format is best for streaming due to its small file size?
(A) WAV
(B) MP3
(C) AIFF
(D) FLAC

30. Which device converts electrical signals back into sound waves?
(A) Microphone
(B) Speaker
(C) Mixer
(D) Amplifier

31. Which audio term refers to the unwanted background noise in a recording?
(A) Hiss
(B) Gain
(C) Reverb
(D) Echo

32. Which process changes the speed of an audio recording without affecting pitch?
(A) Time stretching
(B) Pitch shifting
(C) Equalization
(D) Sampling

33. Which audio processing technique is used to enhance low and high frequencies?
(A) Compression
(B) Equalization
(C) Filtering
(D) Amplification

34. Which audio format provides the best quality for professional music production?
(A) MP3
(B) WAV
(C) AAC
(D) OGG

35. Which device is used to boost weak audio signals before processing?
(A) Mixer
(B) Preamplifier
(C) Equalizer
(D) Filter

36. Which term refers to the unwanted distortion when audio signal levels are too high?
(A) Clipping
(B) Filtering
(C) Compression
(D) Echo

37. Which process allows audio to be transmitted over the internet in real-time?
(A) Encoding
(B) Streaming
(C) Mixing
(D) Sampling

38. Which microphone is typically used in broadcasting?
(A) Lavalier microphone
(B) Shotgun microphone
(C) Dynamic microphone
(D) Condenser microphone

39. Which audio processing term refers to the measurement of loudness?
(A) Gain
(B) Decibel
(C) Frequency
(D) Bit rate

40. Which tool is used in audio editing to cut and rearrange segments?
(A) Equalizer
(B) Mixer
(C) Waveform editor
(D) Compressor

41. Which process is used to protect audio equipment from sudden loud signals?
(A) Limiting
(B) Filtering
(C) Mixing
(D) Sampling

42. Which audio effect repeats a sound after a short delay?
(A) Echo
(B) Reverb
(C) Chorus
(D) Flanger

43. Which type of audio cable is commonly used for professional recording?
(A) RCA
(B) XLR
(C) USB
(D) TRS

44. Which type of filter removes a specific narrow range of frequencies?
(A) Low-pass filter
(B) High-pass filter
(C) Notch filter
(D) Band-pass filter

45. Which audio term describes the tonal quality of a sound?
(A) Pitch
(B) Timbre
(C) Loudness
(D) Gain

46. Which process finalizes audio for distribution by ensuring consistency and loudness?
(A) Mixing
(B) Mastering
(C) Editing
(D) Filtering

47. Which audio effect combines delayed copies of a signal with the original to create a swirling sound?
(A) Chorus
(B) Flanger
(C) Phaser
(D) Echo

48. Which audio measurement refers to the number of bits per second of data?
(A) Sampling rate
(B) Bit rate
(C) Frequency
(D) Dynamic range