Automatic extraction of musical portions of an audio stream

Details Automatic extraction of musical portions of an audio stream Automatic extraction of musical portions of an audio stream

2007-02-20

2007-02-20

Donovan, Lincoln (Department: 2837)

Music

Instruments

Electrical musical tone generation

C700S094000

Reexamination Certificate

active

10733257

ABSTRACT:
Music and non-music portions in an audio stream are identified. The audio stream is digitized and segmented into frames. Selected frames are passed through a filter bank which includes filters having bandwidths approximately proportional to their center frequencies. The spectral flux for each selected frame is calculated and smoothed. Frames having a smoothed spectral flux below a threshold value are associated with music, and frames having a smoothed spectral flux above a threshold value are associated with non-music.

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