29 Questions
What is the primary purpose of audio compression?
To remove redundant or irrelevant information from the audio signal
What is the main difference between lossless and lossy compression?
Lossless compression preserves all details, while lossy compression reduces some details
What is the compression ratio typically achieved by lossless compression routines for audio with a full dynamic range?
2:1 or lower
What is the main advantage of using compressed audio files on the web?
Reduced storage space and transmission bandwidth
Which of the following is an example of an uncompressed audio file format?
WAV
How many major groups of audio file formats are there?
3
What is the primary difference between sampled audio and MIDI data?
Sampled audio is captured by sampling an analogue waveform, while MIDI data contains instructions on how to perform a musical composition
Which of the following formats is classified as a lossless compression format?
FLAC
What type of sound is MIDI music not well suited for?
Voice recordings
What is the advantage of MIDI file formats?
They are more compact
What is the main difference between a MIDI file and an MP3 file?
MIDI files contain instructions on how to perform music, while MP3 files contain the actual audio data
Which of the following is an example of a sampled audio format?
WAV
What is the native sound format for Windows?
WAV
What is the compression rate for MP3 format?
1 : 10 – 14
What is the main advantage of MP3 format?
It reduces the number of bytes in a song without hurting the quality
What is the technique used in MP3 format?
Perceptual noise shaping
What is the characteristic of human ear used in MP3 format?
Inability to hear certain sounds
What is the definition of streaming media?
The delivery of audio, video and other multimedia content across the internet
What is a significant advantage of MIDI music files?
Small file sizes
Which of the following audio file formats is known for its excellent sound quality and is supported without a plug-in?
AIF
What is a disadvantage of using uncompressed audio file formats like WAV?
Large file sizes
Which software can be used to create and edit MIDI music?
Cubase
What is a characteristic of Real Audio files?
High compression
Which of the following audio file formats is commonly used on music download sites?
WMA
What is the process of sending content over the internet in small data packets?
Streaming
What is the format developed for streaming audio, comparable in quality to MP3?
Windows Media Audio
What is the term for a device or program capable of encoding or decoding a digital data stream or signal?
Codec
What is the primary advantage of streaming media over traditional downloading?
No impact on the end-user's computer
What is the format developed by Real Networks for streaming media?
RM
Test your understanding of audio compression and file formats, including lossless compression, categories of compression, and their applications in reducing storage space and transmission bandwidth.
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