Lyric alignment in popular songs - PowerPoint PPT Presentation

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Lyric alignment in popular songs

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textual transcription of lyrics. acoustic musical signal. of a song. Purpose: find the timestamps for the beginning and ending points for each line of the song. ... – PowerPoint PPT presentation

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Title: Lyric alignment in popular songs


1
Lyric alignment in popular songs
  • Luong Minh Thang
  • WING group meeting 12 Oct, 2007

2
Outline
  • Recap
  • Repetition
  • Global alignment
  • Local alignment
  • Song model Segmentation

3
Recap
  • Given
  • textual transcription of lyrics
  • acoustic musical signal
  • of a song
  • Purpose find the timestamps for the beginning
    and ending points for each line of the song.

4
Recap (cont.)
Chroma self-similarity matrix
Lyric self-similarity matrix
j
How to generate lyric-chroma similarity matrix?
i
Lyric-chroma similarity matrix
5
Repetition
Linear sequence v1, v2, .., vm
2 units I, j will have vi, vj approximately
equal count how many times vi are repeated
count how many times vi vi1 ..vik are repeated
average across length
self-similarity matrix
Repetition sequence r1, r2, .., rm
6
Repetition (cont.)
  • Chroma repetition contains noise
  • Need to be improved here

7
Local alignment
Chorus 1
Chorus 2 vs. Chorus 1
Chorus 2
Chorus 3
Chorus 4
  • Use non-overlapped local alignment

8
Global alignment
  • Scoring matrix to restrict skip on lyric side
  • Free-end versions

9
Local alignment (cont.)
  • Looking at a specific window
  • Use local alignment to detect other segments

10
Some figures
11
Song model
  • Divide dataset into 2 categories I-V1-C1-V2-C2-O
    I-V1-C1-v2-C2-V3-C3-O
  • Model for each category to tell the estimated
    positions of a particular

12
Segmentation
  • Align the same segments in lyric and chroma
    together.
  • Use perfect knowledge to set an aim

13
Some figures
14
To be done
  • Incorporate segmentation on chroma side
  • Continue writing thesis
  • Improving repetition values

15
  • Thank you !
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