| 摘要 |
A device (1) for determining accented beats in a music signal (x[n]) comprises: energy determination means (12) for determining the energy (E[n]; E[k]) of the music signal (x[n]), - segmentation means (15) for segmenting the energy on the basis of a tempo estimate (T), similarity determination means (17) for determining the similarity between the energy (E[n]; E[k]) of segments, and selecting means (18) for selecting the segment having the smallest similarity as the segment containing an accented beat. The tempo estimate (T) may be determined by external means. The energy may be determined in the time domain or in a transform domain. The similarity may be determined using cross-correlation, entropy or a distance measure. The device (1) may advantageously be used in AutoDJ apparatus. |
