Questionário de identificação de música cover

As respostas e explicações aparecem conforme você responde ao teste.

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. O que representa um recurso de croma (HPCP)?
   • O nível exato de decibéis de cada segundo
   • As 12 classes de notas com oitavas colapsaram juntas
   • Os nomes dos músicos atuantes
   • The file’s compression format
3. Como os sistemas lidam com um cover gravado em um tom musical diferente?
   • Eles desistem e não relatam correspondência
   • Eles convertem o áudio em texto
   • Eles giram ciclicamente o vetor de croma de 12 compartimentos para testar todas as transposições
   • Eles aceleram a gravação para 2x
4. Que técnica amplia uma sequência de áudio para alinhá-la com outra que tem um andamento diferente?
   • Compressão JPEG
   • Embaralhamento aleatório
   • Interpolação de pixels
   • Distorção dinâmica de tempo (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