Lesson 4.5.6.8
4.5.6.8 Musical Instrument Digital Interface (MIDI) Quiz: AQA Computer Science, Unit 5
20 questions
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Lesson 4.5.6.8, Musical Instrument Digital Interface (MIDI): 20 multiple choice questions for the AQA Computer Science (7517), Unit 5: Fundamentals of data representation, written with Revision Ninja.
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The 20 questions
-
What does the acronym MIDI stand for in digital music production?
- Machine Instruction Data Input
- Musical Internal Data Interchange
- Musical Instrument Digital Interface
- Memory Integrated Digital Instrument
-
What type of data does a MIDI file store instead of audio waveforms?
- Event messages
- Sampled amplitudes
- Frequency spectra
- Binary soundwaves
-
Which of these is a MIDI event message type?
- Sample rate
- Checksum
- Note on
- Pixel fill
-
What is a major advantage of MIDI files compared to sampled audio files?
- Includes vocal tracks
- Universal realistic sound
- Higher audio quality
- Smaller file size
-
Why might the same MIDI file sound different when played on two different devices?
- Varying playback speeds
- Different sample rates
- Corrupted event messages
- Different synth sounds
-
Which parameter in a MIDI note-on message specifies how loudly a note is played?
- Channel
- Pitch
- Velocity
- Tempo
-
What is the primary purpose of MIDI in computer science and music technology?
- Communicating performance data
- Compressing audio files
- Filtering sound noise
- Digitising analogue voices
-
Which MIDI note number is middle C, which is 60, in 7-bit binary?
- 0111100
- 0110100
- 1111100
- 0111000
-
How many distinct MIDI note numbers can be represented with 7 bits?
- 127
- 256
- 120
- 128
-
A MIDI file uses 3 bytes per note event and contains 1000 note events. What is its size?
- 1000 bytes
- 30,000 bytes
- 3000 bytes
- 300 bytes
-
A melody of 400 notes has a note-on and a note-off event for each note, with 3 bytes per event. What is the total size?
- 3600 bytes
- 800 bytes
- 1200 bytes
- 2400 bytes
-
Four bits are used to store a MIDI channel number. How many channels can be addressed?
- 8
- 32
- 16
- 4
-
A MIDI file contains 3,000 events of 3 bytes each. What is the total file size?
- 9,000 bytes
- 3,000 bytes
- 90,000 bytes
- 27,000 bytes
-
How many bits are needed to store one MIDI note number from 0 to 127?
- 7
- 6
- 128
- 8
-
How are two simultaneous musical notes represented in MIDI?
- Two separate events
- Frequency average
- One combined event
- A single sample
-
What type of information does a MIDI file contain?
- Raw bitstream data
- Event control messages
- Analogue audio signals
- Sampled sound waves
-
Which file format allows individual musical notes to be edited easily?
- MIDI
- MP3
- FLAC
- WAV
-
Why is MIDI unsuitable for recording human speech or singing?
- Cannot record audio
- Huge file size
- Causes latency issues
- Requires high bandwidth
-
What parameter in a MIDI note-on message controls the loudness?
- Pitch
- Frequency
- Channel
- Velocity
-
Compared to digital audio files, what is a key advantage of MIDI files?
- Higher sound quality
- Smaller file size
- Captures human speech
- Uncompressed audio data
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