Cover Song Identification Quiz

Answers and explanations appear as you take the quiz.

1. Why can a recording fingerprint designed for near-identical audio fail on a cover performance?
   • A cover may change tempo, key, arrangement, and instrumentation while preserving the composition
   • It is guaranteed to match any recording with the same title
   • Every cover uses the same waveform samples
   • It can identify a song only from album artwork
2. What does a chroma (HPCP) feature represent?
   • The exact decibel level of each second
   • The 12 pitch classes with octaves collapsed together
   • The names of the performing musicians
   • The file’s compression format
3. How do systems handle a cover recorded in a different musical key?
   • They give up and report no match
   • They convert the audio to text
   • They cyclically rotate the 12-bin chroma vector to test all transpositions
   • They speed up the recording to 2x
4. What technique stretches one audio sequence to align with another that has a different tempo?
   • JPEG compression
   • Random shuffling
   • Pixel interpolation
   • Dynamic time warping (DTW)
5. How can a learned cover-song model support retrieval across tracks of different lengths?
   • Map each track to a fixed-dimensional representation and compare representations
   • Require every version to have the same waveform length
   • Search only by file name
   • Compare the full waveform sample-by-sample without alignment
6. Which training loss does ByteCover use to compact same-composition versions in its embedding space?
   • A reconstruction loss only
   • Triplet loss, alongside a classification loss
   • A binary cross-entropy loss between raw waveforms
   • A next-token prediction loss
7. How can chroma features help compare some cover recordings?
   • They make every instrument produce identical features
   • They remove all effects of arrangement and production
   • They summarize pitch-class structure and reduce sensitivity to octave and some timbral changes
   • They prove two tracks are the same composition
8. What information can a single global chroma summary lose when comparing cover songs?
   • The fact that pitch classes repeat across octaves
   • The recording’s file extension
   • Whether the waveform has a left and right channel
   • The temporal order of pitch-class events through the track